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Subject: Science and Technology

Antimicrobial resistance (AMR): The silent health catastrophe
Context
- Antimicrobial resistance (AMR), often also called antibiotic resistance, is a global health challenge and a looming public health crisis. The WHO has declared it as one of the top 10 health threats facing humanity.
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What is antimicrobial resistance (AMR)?
- AMR is the ability of a microorganism (like bacteria, viruses, and some parasites) to stop and survive exposure to an antimicrobial (such as antibiotics, antivirals and antimalarials) from working against it. As a result, standard treatments become ineffective, infections persist and may spread to others.
How AMR occurs?
- Improper use of antimicrobials: Antimicrobials, chemicals or molecules that kill harmful bugs, are the backbone of modern medicine. Improperly used antimicrobials create selective pressure on bugs.
- Resilient bugs survive the exposure to antimicrobials: The bugs most vulnerable to the drugs die quickly, while the most resilient ones survive, replicate and become superbugs. AMR occurs when superbugs develop and antimicrobials stop working.
- For example: Microorganisms (bugs) are everywhere with some being helpful like the yoghurt-making lactobacillus and some being harmful like the typhoid-causing salmonella.
What are superbugs?
- Microorganisms that become resistant to most antimicrobials are often referred to as superbugs.
- Superbugs makes medical procedures such as organ transplantation, cancer chemotherapy, and other major surgeries very risky.
Interesting fact
- Research has shown that the use of certain types of antimicrobials in animal feed can lead to the development of antimicrobial-resistant bacteria in food-producing animals.
- These resistant bacteria can then be transmitted to humans through the food supply, leading to the spread of AMR.
Prescription to reduce and potentially reverse AMR
- The first prescription is prevention: Disease prevention and wellness are key to public health and thus preventing infections whenever and wherever possible is equivalent to averting resistance. We need to spearhead sanitation drives, ensure a clean water supply and support hospital-driven infection-control programmes.
- Judicious prescription of antimicrobials: Reducing AMR also requires prescribing antimicrobials judiciously and only when they are absolutely needed.
- Effective coordination and management: There is also a need for more cohesion within management strategies. Coordination across the animal industry and environmental sectors to prevent the unnecessary use of antibiotics in farms these nurtures drug-resistant organisms in our food supply is necessary.
- Robust surveillance systems to detect resistant pathogens of all kinds: Other prescription closely connected with prevention is the development of robust surveillance systems that allow us to detect resistant pathogens of all kinds in the environment and hospitals that would eventually allow containment.
- Heavy investment in research and development: There is an urgent need for a strong pipeline of new antibiotics; an essential component in restoring the balance and ensuring that we have new tools in the fight against AMR. Bringing a new antibiotic from basic research through clinical trials takes more than a decade and requires upward of $1 billion. So there is need to invest heavily in research and development through both government and private funding.
- New financial incentives to make it profitable keeping in mind the social value: Profits on these drugs are negligible. Hence, there is need to formulate new types of financial incentives to measure return on investment and measure profitability by the social value of the antibiotic, breaking the conventional link between sales and profits.
- Bringing in the collective moral vision: Last but not least, we need to bring a collective moral vision to AMR and start thinking of antibiotic/antimicrobial drugs as limited resources that should be available to all.
Conclusion
- Although seemingly distant and abstract, AMR is in the air and potentially catastrophic for those burdened by it. The success of modern medicine, women’s health, infectious diseases, surgery and cancer would be at increased risk for lack of working antimicrobials. The cost of AMR to the economy is significant and it is critical to develop policies and implement them through a holistic One Health approach.
Mains question

Q. What is Antimicrobial Resistance (AMR)? Given that AMR is an impending health disaster, discuss what measures can be taken to reduce AMR?

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January 9, 2023
Superconductivity in Mercury
This newscard is an excerpt from the original article published in TH.

What is a superconductor?
- A superconductor is defined as a substance that offers no resistance to the electric current when it becomes colder than a critical temperature.
- Some of the popular examples of superconductors are aluminium, magnesium diboride, niobium, copper oxide, yttrium barium and iron pnictides.
How mercury becomes superconductor?
- In 1911, Dutch physicist Heike Kamerlingh Onnes discovered superconductivity in mercury.
- He found that at a very low temperature, called the threshold temperature, solid mercury offers no resistance to the flow of electric current.
How is mercury capable of achieving superconductivity?

Ans. Bardeen-Cooper-Schrieffer (BCS) theory
- Scientists classified mercury as a conventional superconductor because its superconductivity could be explained by the concepts of Bardeen-Cooper-Schrieffer (BCS) theory.
- While scientists have used the BCS theory to explain superconductivity in various materials, they have never fully understood how it operates in mercury — the oldest superconductor.
- The researchers used state-of-the-art theoretical and computational approaches and found that all physical properties relevant for conventional superconductivity are anomalous in some respect in mercury.
How BCS explains it?
- In BCS superconductors, vibrational energy released by the grid of atoms encourages electrons to pair up, forming so-called Cooper pairs.
- These Copper pairs can move like water in a stream, facing no resistance to their flow, below a threshold temperature.
- By including certain factors that physicists had previously side-lined, the group’s calculations led to a clearer picture of how superconductivity emerges in mercury.
- For example, when the researchers accounted for the relationship between an electron’s spin and momentum, they could explain why mercury has such a low threshold temperature (around –270°C).
Coulomb repulsion and Mercury
- Similarly, the group found that one electron in each pair in mercury occupied a higher energy level than the other.
- This detail reportedly lowered the Coulomb repulsion (like charges repel) between them and nurtured superconductivity.
- Thus, the group has explained how mercury becomes a superconductor below its threshold temperature.
- Their methods and findings suggest that we could have missed similar anomalous effects in other materials, leading to previously undiscovered ones that can be exploited for new and better real-world applications.
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January 9, 2023
AI generative models and the question of Ethics
Context
- 2022 had an unusual blue-ribbon winner for emerging digital artists; Jason Allen’s winning work Théâtre D’opéra Spatial was created with an AI Generative model called Midjourney.
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What is Midjourney?
- Midjourney is an AI based art generator that has been created to explore new mediums of thought.
- It is an interactive bot, which uses machine learning (ML) to create images based on texts. This AI system utilises the concepts and tries to convert them into visual reality.
- It is quite similar to other technologies such as DALL-E 2.
The journey of AI generative models so far
- Midjourney generator: Midjourney is one of the rash of AI-generated Transformer or Generative or Large Language Models (LLMs) which have exploded onto our world in the last few years.
- Earlier models: Models like BERT and Megatron (2019) were relatively small models, with up to 174 GB of dataset size, and passed under the collective public radar.
- Composition skills of GPT3: GPT3, released by OpenAI with a 570 GB dataset and 175bn parameters was the first one to capture the public consciousness with some amazing writing and composition skills.
- Models that creat images or videos based on texts: The real magic, however, started with Transformers which could create beautiful and realistic pieces of art with just a text prompt OpenAI’s DALL-E2, Google’s Imagen, the open-source Stable Diffusion and, obviously, Midjourney. Not to be left behind, Meta unleashed a transformer which could create videos from text prompts.
- ChatGPT, a latest and more evolved, like real communication: Recently in late 2022 came the transformer to rule them all ChatGPT built on GPT3, but with capabilities to have real conversations with human beings.
Are these models ethical?
- Ethics is too complex a subject to address in one short article. There are three big ethical questions on these models that humanity will have to address in short order.
1. Environmental: Most of the bad rap goes to crypto and blockchain, but the cloud and these AI models running on it take enormous amounts of energy. Training a large transformer model just once would have CO2 emissions equivalent to 125 roundtrips from New York to Beijing. This cloud is the hundreds of data centres that dot our planet, and they guzzle water and power at alarming rates.
2. Bias; as it do not understand meaning and its implications: The other thorny ethical issue is that sheer size does not guarantee diversity. Timnit Gebru was with Google when she co-wrote a seminal research paper calling these LLMs ‘stochastic parrots’, because, like parrots, they just repeated a senseless litany of words without understanding their meaning and implications.
3. Plagiarism, question of who owns the original content: The third prickly ethical issue, which also prompted the artist backlash to Allen’s award-winning work is that of plagiarism. If Stable Diffusion or DALL-E 2 did all the work of scouring the web and combining multiple images (a Pablo Picasso Mona Lisa, for example), who owns it. Currently, OpenAI has ownership of all images created with DALL-E, and their business model is to allow paid users to have rights to reproduce, paint, sell and merchandise images they create. This is a legal minefield the US Copyrights office recently refused to grant a copyright to a piece created by a generative AI called Creativity Machine, but South Africa and Australia have recently announced that AI can be considered an inventor.
Do you know ChatGPT?
- ChatGPT is a chatbot built on a large-scale transformer-based language model that is trained on a diverse dataset of text and is capable of generating human-like responses to prompts.
- A conversation with ChatGPT is like talking to a computer, a smart one, which appears to have some semblance of human-like intelligence.
What are the other concerns?
- Besides the legal quagmire, there is a bigger fear: This kind of cheap, mass-produced art could put artists, photographers, and graphic designers out of their jobs.
- Machine does not have human like sense: A machine is not necessarily creating art, it is crunching and manipulating data and it has no idea or sense of what and why it is doing so.
- As it is cheap, corporate might consider using it at a large scale: But it can do so cheaply, and at scale. Corporate customers might seriously consider it for their creative, advertising, and other needs.
Conclusion
- Legal and political leaders across the world are sounding the alarm about the ethics of large generative models, and for good reason. As these models become increasingly powerful in the hands of Big Tech, with their unlimited budgets, brains and computing power, these issues of bias, environmental damage and plagiarism will become even more fraught. Such AI models should not be used to create chaos rather a harmonious existence.
Mains question

Q. Name some of the models of AI based art generators. Discuss the ethical concerns of such models.

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January 5, 2023
129th birth anniversary of Satyendra Nath Bose
Born on January 1, 1894, Bose collaborated with Einstein to develop what we now know as the Bose-Einstein statistics. We take a look at the Indian physicist’s illustrious legacy and stellar achievements.

Satyendra Nath Bose
- Born on January 1, 1894, Bose grew up and studied in Kolkata, where he solidified his position as an exemplary academician.
- His father, an accountant in the Executive Engineering Department of the East Indian Railways, gave him an arithmetic problem to solve every day before going to work, encouraging Bose’s interest in mathematics.
- By the age of 15, he began pursuing a Bachelor of Science degree at the Presidency College, and later finished his MSc in Mixed Mathematics in 1915.
Career as researchers
- These were tough times for Indian researchers as World War I had broken out and, European scientific journals came to India quite infrequently.
- Not only this, most of the research papers weren’t available in English and both Bose and Saha had to learn scientific terms in German and French languages to read published works.
- However, the new skill came in handy for them in 1919, when they published English translations of Albert Einstein’s special and general relativity papers.
- Two years later, Bose was appointed to the position of Reader in Physics at the University of Dhaka. It was here that he made his most significant contributions to physics.
Association with Einstein
- Bose wrote a letter to Albert Einstein in 1924 about his breakthrough in quantum mechanics.
- He claimed that he had derived Planck’s law for black body radiation (which refers to the spectrum of light emitted by any hot object) without any reference to classical electrodynamics.
- Impressed by Bose’s findings, Einstein not only arranged for the publication of the paper but also translated it into German.
- This recognition catapulted Bose to fame and glory.
Breakthrough in the invention of Boson
- He went on to work with Einstein and together they developed what is now known as the Bose-Einstein statistics.
- Today, in honour of his legacy, any particle that obeys the Bose-Einstein statistics is called a boson.
- On his 129th birth anniversary, we take a look at the Indian physicist’s illustrious legacy and stellar achievements.
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January 2, 2023

What are Globular Clusters?

cluster

Astronomers and scientists at the Indian Institute of Astrophysics (IIA) while studying the Omega Centauri have found that hot stars and white dwarfs emitted less ultraviolet radiation than expected.

Omega Centauri

It is the most massive globular cluster system in our galaxy.
It was first identified as a non-stellar object by Edmond Halley in 1677 and as globular star cluster orbiting Milky Way galaxy by John Herschel in 1830s.
It contains approximately 10 million stars and is about 16,000 light-years away.
It also includes stars of a variety of ages, whereas other globular clusters contain stars from only one generation.
It is the largest and brightest globular cluster in the Milky Way.

What is a globular cluster?

A globular cluster is a spheroidal conglomeration of stars.
Globular clusters are bound together by gravity, with a higher concentration of stars towards their centres.
They can contain anywhere from tens of thousands to many millions of member stars.
They orbit mostly in the extended stellar halos surrounding most spiral galaxies.

How are they formed?

No one knows precisely how globular clusters formed. Or what role, if any, they played in the development of galaxies.
We know globular clusters are the oldest, largest and most massive type of star cluster. And globular clusters contain the oldest stars.
Their age is determined by their almost complete lack of what astronomers call metals, the heavier elements forged in star interiors.

Our Milky Way has over 150 globular clusters

Our own Milky Way has over 150 globular clusters, with perhaps more, hidden by galactic dust.
The Andromeda galaxy (M31), our neighboring spiral galaxy, appears to have around 300 globular clusters.

Difference between a globular cluster and an open cluster

Globular clusters are big, symmetric and old. They can reach 300 light-years in diameter and contain 10 million stars. On the other hand, open star clusters, contains sibling stars, scattered through the disk of our galaxy and presumably other galaxies.
Globular star cluster are very symmetrical in shape, and are densest toward their centers. Open star clusters are irregular in shape and loosely grouped together.
Globular clusters orbit in the halo of our galaxy. Plus, center around the galaxy’s core and expanding above and below the galactic disk. Open star clusters tend to orbit within the disk.
Globular star clusters contain million of stars. Yet some globular clusters, like Omega Centauri, contain millions of stars. Open star clusters contain only hundreds of stars.

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December 31, 2022

Five space exploration missions to look out for in 2023
2023 is set to be another busy year. Here are five of the most exciting missions to watch out for.

(1) Jupiter Icy Moons Explorer
- In April, the European Space Agency (ESA) is set to launch the Jupiter Icy Moons Explorer (Juice), in what will be Europe’s first dedicated robotic mission to Jupiter.
- Juice is due to reach the planet in July 2031 after performing an incredible flight path through the Solar System.
- The mission will enter into orbit around Jupiter and perform numerous flybys of its large icy moons: Europa, Ganymede and Callisto.
- After four years of moon flybys, Juice will then enter into orbit around Ganymede, the largest moon in the Solar System — becoming the first spacecraft ever to reach orbit around the moon of another planet.
- The icy moons of Jupiter are interesting as they are all believed to host oceans of liquid water beneath their frozen surfaces.
- Europa, in particular, is regarded as one of the most likely abodes in the Solar System for extra-terrestrial life.
(2) SpaceX Starship
- Starship will be the largest spacecraft capable of carrying humans from Earth to destinations in space (the International Space Station is larger, but it was assembled in space).
- It will be the most powerful launch vehicle ever to fly, capable of lifting 100 tonnes of cargo to low Earth orbit.
- Starship is the collective name for a two-component system consisting of the Starship spacecraft (which carries the crew and cargo) and the Super Heavy rocket.
- The rocket component will lift Starship to some 65km altitude before separating and returning to Earth in a controlled landing.
- The upper Starship component will then use its own engines to push itself the rest of the way to orbit.
(3) dearMoon Project
- The long-awaited dearMoon project, which will take members of the public on a six-day trip around the Moon and back, is due for launch on Starship and was originally planned for 2023.
- It will be the first true deep space tourism launch.
- This mission will mark a big change in the way we think about space, as previously only astronauts picked using incredibly stringent criteria have been able to go into deep space.
- The success or failure of the dearMoon mission could affect whether deep space tourism becomes the next big thing, or it is relegated back to being a pipe-dream.
(4) OSIRIS-REx returning Earth
- The Origins Spectral Interpretation Resource Identification Security — Regolith Explorer, mercifully more commonly known as OSIRIS-REx, is a NASA mission to near-Earth asteroid Bennu.
- A key goal of this robotic mission was to acquire samples of Bennu and return them to Earth for analysis.
- OSIRIS-REx is now fast returning to Earth with up to a kilogram of precious asteroid samples stored aboard.
- If all goes well, the capsule will detach from the spacecraft, enter the Earth’s atmosphere and parachute to a soft landing in the deserts of Utah.
- Asteroid sample return has only been achieved once before, by the Japanese Space Agency’s Hayabusa 2 mission in 2020.
- Bennu is an approximately diamond-shaped world just half a kilometre in size, but has many interesting characteristics.
- Some of the minerals detected within it have been altered by water, implying that Bennu’s ancient parent body possessed liquid water.
- It also has an abundance of precious metals, including gold and platinum.
- It is however classed as a potentially hazardous object with a (very) small possibility of Earth impact in the next century.
(5) India’s private space launch
- Skyroot Aerospace, which successfully launched its Vikram-S rocket in November 2022, is soon to become the first private Indian company to launch a satellite.
- The rocket itself reached 90km in altitude, a distance that would need to be improved upon to get a constellation of satellites into orbit.
- Skyroot’s first satellite launch is planned for 2023, with a goal of undercutting the cost of private space launch rivals by producing its 3D-printed rockets in a matter of days.
- If successful, this could also provide a route for cheaper launches of scientific missions, enabling a faster rate of research.
Conclusion
- With many bold advances and launches due in 2023, we are entering a new phase akin to the “Golden era” of space launches in the 1960s and ’70s.
December 29, 2022
The AI storm of ChatGPT: Advantages and limitations
Context
- Many of us are familiar with the concept of what a “chatbot” is and what it is supposed to do. But this year, OpenAI’s ChatGPT turned a simple experience into something entirely different. ChatGPT is being seen as a path-breaking example of an AI chatbot and what the technology could achieve when applied at scale.
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Background
- ChatGPT by OpenAI: Artificial Intelligence (AI) research company OpenAI on recently announced ChatGPT, a prototype dialogue-based AI chatbot capable of understanding natural language and responding in natural language.
- Will be able to implement in softwares soon: So far, OpenAI has only opened up the bot for evaluation and beta testing but API access is expected to follow next year. With API access, developers will be able to implement ChatGPT into their own software.
- Remarkable abilities: But even under its beta testing phase, ChatGPT’s abilities are already quite remarkable. Aside from amusing responses like the pumpkin one above, people are already finding real-world applications and use cases for the bot.
What is Chatbot?
- A chatbot (coined from the term “chat robot”) is a computer program that simulates human conversation either by voice or text communication, and is designed to help solve a problem.
- Organizations use chatbots to engage with customers alongside the classic customer service channels like phone, email, and social media.
What is ChatGPT?
- Simple definition: ChatGPT is a chatbot built on a large-scale transformer-based language model that is trained on a diverse dataset of text and is capable of generating human-like responses to prompts.
- A human like language model: It is based on GPT-3.5, a language model that uses deep learning to produce human-like text.
- It is more engaging with details: However, while the older GPT-3 model only took text prompts and tried to continue on that with its own generated text, ChatGPT is more engaging. It’s much better at generating detailed text and can even come up with poems.
- Keeps the memory of the conversations: Another unique characteristic is memory. The bot can remember earlier comments in a conversation and recount them to the user.
- Human- like resemblance: A conversation with ChatGPT is like talking to a computer, a smart one, which appears to have some semblance of human-like intelligence.
The Question arises: will AI replace all of our daily writing?
- ChatGPT is not entirely accurate: It is not entirely accurate, something even OpenAI has admitted. It is also evident that some of the essays written by ChatGPT lack the depth that a real human expert might showcase when writing on the same subject.
- ChatGPT lacks depth like human mind: It doesn’t quite have the nuance that a human would often be able to provide. For example, when asked ChatGPT how one should cope with a cancer diagnosis. The responses were kind but generic. The type of responses you would find in any general self-help guide.
- It lacks same experiences as humans: AI has a long way to go. After all, it doesn’t have the same experiences as a human.
- ChatGPT doent excel in code: ChatGPT is writing basic code. As several reports have shown, ChatGPT doesn’t quite excel at this yet. But a future where basic code is written using AI doesn’t seem so incredible right now.
Limitations of ChatGPT
- ChatGPT is still prone to Misinformation: Despite of abilities of the bot there are some limitations. ChatGPT is still prone to misinformation and biases, which is something that plagued previous versions of GPT as well. The model can give incorrect answers to, say, algebraic problems.
- ChatGPT can write incorrect answers: OpenAI understands some flaws and has noted them down on its announcement blog that “ChatGPT sometimes writes plausible-sounding but incorrect or nonsensical answers.
Conclusion
- OpenAI’s ChatGPT turned that simple experience into something entirely different. ChatGPT is a path-breaking example of an AI chatbot and what the technology could achieve when applied at scale. Limitations aside, ChatGPT still makes for a fun little bot to interact with. However, there are some challenges that needs to be addressed before it becomes a unavoidable part of human life.
Manis question

Q. What is ChatGPT? Discuss why it is seen as pathbreaking example of an AI chatbot and the limitations?

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December 28, 2022
Naegleria fowleri: The Brain-eating Amoeba
South Korea reported its first case of infection from Naegleria fowleri or “brain-eating amoeba”.

What is Naegleria fowleri (Amoeba)?
- Amoeba is a type of cell or unicellular organism with the ability to alter its shape, primarily by extending and retracting pseudopods.
- Naegleria is an amoeba, a single-celled organism, and only one of its species, called Naegleria fowleri, can infect humans.
- It was first discovered in Australia in 1965 and is commonly found in warm freshwater bodies, such as hot springs, rivers and lakes.
- So far, Naegleria fowleri has been found in all continents and declared as the cause of PAM in over 16 countries, including India.
How does it infect humans?
- The amoeba enters the human body through the nose and then travels up to the brain.
- This can usually happen when someone goes for a swim, or dive or even when they dip their head in a freshwater body.
- In some cases, it was found that people got infected when they cleaned their nostrils with contaminated water/ vapour/ or aerosol droplets.
- Once Naegleria fowleri goes to the brain, it destroys brain tissues and causes a dangerous infection known as primary amebic meningoencephalitis (PAM).
What are the symptoms of PAM?
- The CDC says the first signs of PAM start showing within one to 12 days after the infection.
- In the initial stages, they might be similar to symptoms of meningitis, which are headache, nausea and fever.
- In the later stages, one can suffer from a stiff neck, seizures, hallucinations, and even coma.
- The infection spreads rapidly and on average causes death within about five days.
How its spread is linked to climate change?
- With the rising global temperatures, the chances of getting Naegleria fowleri infection will go up as the amoeba mainly thrives in warm freshwater bodies.
- The organism best grows in high temperatures up to 46°C and sometimes can survive at even higher temperatures.
- Various recent studies have found that excess atmospheric carbon dioxide has led to an increase in the temperature of lakes and rivers.
- These conditions provide a more favourable environment for the amoeba to grow.
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December 28, 2022
Neuralink and the unnecessary suffering of animals
Context
- Elon Musk’s medical company, Neuralink, has been accused of causing needless suffering and death to around 1,500 animals in just short few years. Sources indicate that animal testing is proceeding too swiftly, which results in unnecessary suffering and death for the animals.
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What Is Neuralink?
- A device to be inserted in brain: Neuralink is a gadget that will be surgically inserted into the brain using robotics. In this procedure, a chipset called the link is implanted in the skull.
- Insulated wires connected to electrodes: It has a number of insulated wires connected from the electrodes that are used in the process.
- Can be operated by smartphones: This device can then be used to operate smartphones and computers without having to touch it.
The science behind the human brain
- Neurons of the Brain: The brain consists of neurons that transmit signals to cells in the body including muscle, nerve, gland and other neuron cells.
- Functions of each part of the brain: Every neuron is made up of three parts called the dendrite, the soma (cell body) and the axon. Each of this part has its own function. The dendrite receives the signals. The soma processes these signals. The axon then transmits the signals to the other cells.
- Neurotansmitters: The neurons are connected to one another by the synapses which release neurotransmitters. These chemical substances are then sent to another neuron cell’s dendrite causing the flow of current across the neurons.
How Does Neuralink Work?
- Electrodes can read electric signals: The electrodes that are part of the Neuralink will read electrical signals that are produced by several neurons in the brain. The signals are then outputted in form of an action or movement.
- Implanted directly in the brain: According to the company’s website, the device is implanted directly in the brain because placing it outside the head will not detect the signals produced by the brain accurately
What Does Neuralink Do?
- To operate encephalopathy: Neuralink can be used to operate encephalopathy.
- People with paralysis can be operated: It can also be used as a connection between the human brain and technology. This means that people with paralysis can easily operate their phones and computer directly with their brain.
- It will help people to communicate: Its main purpose is to help people to communicate through text or voice messages.
- Wide applications: Neuralink can also be utilised to draw pictures, take photographs and do other activities.appliactions
Conclusion
- Though the Neuralink innovation pushing the boundaries of neural engineering, cruelty over the animals cannot be ignored.
Mains question

Q. What is Neuralink? What is the science behind the human brain and what the neuralink will do?

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December 27, 2022
Pralay: India’s first tactical quasi-ballistic missile
The Defence Ministry has decided to deploy indigenously developed surface-to-surface ‘Pralay’ ballistic missiles near India’s borders with China and Pakistan.

What are Tactical Missiles?
- Generally, short-range missiles are termed tactical while long-range missiles are termed strategic.
- A missile which is used to destroy tactical targets of enemy like bunkers, mortar position, artillery position etc. is tactical missile.
- Battlefield missiles are tactical while long-range missiles targeting bigger targets like cities are termed strategic.
- Features of these missiles include-
1. Versatile range: Tactical missiles fills the gap between long range rockets and short range ballistic missiles , and have range mainly about 100 to 200 kms .
2. Very high precision and accuracy: These missiles are highly accurate, and can destroy small steady and moving targets with high accuracy.
About ‘Pralay’ Missile
- Pralay is a Hindi word which means “apocalypse” or “to cause great destruction” or “damage”.
- The Pralay missile project was sanctioned in 2015 and is a derivative of the Prahaar missile programme, which was first tested in 2011.
- Developed by the DRDO, the ‘Pralay’ ballistic missile is a canisterised tactical, surface-to-surface, and short-range ballistic missile (SRBM) for battlefield use.
- It can hit targets from a distance of 150 to 500 km and is extremely difficult to intercept by enemy interceptor missiles.
- Pralay is powered by a solid fuel rocket motor and is a high explosive preformed fragmentation warhead that weighs somewhere between 350 kg to 700 kg.
- It also accounts for its Penetration-Cum-Blast (PCB) and Runaway Denial Penetration Submunitions (RDPS).
Unique features of Pralay
- Precise targeting: The missile is designed to destroy enemy radar, communication installations, command centres and airfields.
- Quasi Ballistic Trajectory: It means the object takes a low curved path after being shot.
- Stealth features: Pralay has the ability to evade any anti-ballistic missile (ABM) interceptors by performing mid-air manoeuvres by using a manoeuvrable re-entry vehicle.
- Destruction capability: When a high-explosive warhead, like the one Pralay missile is equipped with, explodes, its pieces are thrown at a high speed which can inflict heavy damage.
What makes Pralay lethal?
- The Indian missile can be compared to China’s Dong Feng 12 and the Russian Iskander missile that has been used in the ongoing war with Ukraine.
- The US Army is in the process of increasing the range of a similar short-range ballistic missile called the Precision Strike Missile (PrSM).
- What makes Pralay deadly is that it is a quasi-ballistic weapon, which means that while it has a low trajectory and is largely ballistic, it can manoeuvre in flight.
- Unlike intercontinental ballistic missiles that exit the Earth’s atmosphere, short-range ballistic missiles stay within it.
What lies ahead?
- Pralay, along with the BrahMos supersonic cruise missile, will form the crux of India’s planned Rocket Force — a concept that was envisaged by former Chief of Defence Staff (CDS), the late General Bipin Rawat.
- Only conventional missiles would come under the planned Rocket Force as and when it’s ready, while nuclear weapons would continue to be under the ambit of the Strategic Forces Command.
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December 27, 2022