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Subject: Science and Technology

  • Plasma Therapy to Treat Rodenticide Poisoning

    Why in the news?

    • A significant health concern in Tamil Nadu is found through ingestion of Rat poison containing Yellow Phosphorus, leading to liver toxicity.
      • Since December 2017, the team at CMC Vellore introduced Plasma Exchange, (a cost-effective treatment) for acute liver failure caused by rat poison ingestion.

    What is Plasma Therapy (Plasmapheresis)?

    • Plasma exchange, also known as plasmapheresis, is a medical procedure used to treat various conditions by removing and replacing plasma from the blood.
    • During Plasma Exchange, the patient’s blood is circulated through a machine that separates plasma from other blood components, such as red and white blood cells and platelets.

    Working procedure:

    • The plasma, which may contain harmful substances or antibodies, is discarded.
    • The remaining blood components are mixed with replacement plasma or a plasma substitute and returned to the patient’s bloodstream.

    Usage of Plasmapheresis:

    • In Autoimmune diseases: Conditions such as Guillain-Barre syndrome, myasthenia gravis, systemic lupus erythematosus, and certain forms of vasculitis.
    • In Neurological disorders: Conditions such as multiple sclerosis, chronic inflammatory demyelinating polyneuropathy, and certain types of encephalitis.
    • In Toxicological emergencies: Poisoning or overdose with substances such as drugs, chemicals, or toxins that can be removed from the bloodstream through plasma exchange.

    Benefits observed in TN’s Case

    • The treatment significantly improved survival rates, with 63.9% of patients treated in 2022-2023 successfully discharged.
    • Retrospective studies at CMC Vellore demonstrated promising outcomes, with survival rates of 75% among children and 80.2% among adults treated with plasma exchange.

    What is Plasma in Human Blood?

    • Human blood plasma is the liquid component of blood, constituting about 55% of its total volume.
    • It is a pale yellowish fluid that carries various substances throughout the body, including nutrients, hormones, electrolytes, antibodies, and waste products.
    • Plasma plays a crucial role in maintaining homeostasis and transporting essential components to tissues and organs.

    Composition:

    • Water: Approximately 90% of plasma consists of water, making it the primary solvent for carrying dissolved substances.
    • Proteins: Plasma contains a variety of proteins, including albumin, globulins, and fibrinogen. These proteins perform functions such as maintaining osmotic pressure, transporting lipids and hormones, and aiding in blood clotting.
    • Electrolytes: Plasma contains ions such as sodium, potassium, chloride, calcium, and bicarbonate, which help regulate fluid balance, pH, and nerve function.
    • Nutrients: Glucose, amino acids, lipids, and vitamins are transported in plasma and provide energy and building blocks for cells.
    • Waste Products: Metabolic waste products, such as urea, creatinine, and bilirubin, are transported in plasma to be eliminated from the body.
    • Hormones: Hormones produced by endocrine glands are carried in plasma to target tissues, where they regulate various physiological processes.
    • Gases: Oxygen and carbon dioxide are transported in plasma, primarily bound to hemoglobin in red blood cells.

    Functions:

    • Plasma carries nutrients, gases, hormones, and waste products to and from cells throughout the body.
    • Plasma helps regulate fluid balance, electrolyte concentrations, pH, and temperature.
    • Antibodies and immune cells in plasma help defend against pathogens and foreign substances, contributing to the body’s immune response.
    • Plasma proteins such as fibrinogen play a crucial role in blood clotting, helping to stop bleeding and repair damaged blood vessels.
    • Plasma buffers changes in pH by absorbing or releasing hydrogen ions, helping maintain the body’s acid-base balance.

     

    PYQ:

    [2011] A married couple adopted a male child. A few years later, twin boys were born to them. The blood group of the couple is AB positive and 0 negative. The blood group of the three sons is A positive, B positive, and O positive. The blood group of the adopted son is-

    (a) O positive

    (b) A positive

    (c) B positive

    (d) Cannot be determined based on the given data

  • [20 April 2024] The Hindu Op-ed: Scientists and a wish list for the incoming government 

    PYQ Relevance:
    Mains: 
    Q  Scientific research in Indian universities is declining, because a career in science is not as attractive as are business professions, engineering or administration, and the universities are becoming consumer-oriented. Critically comment.(UPSC IAS/2014)

    Q What are the research and developmental achievements in applied biotechnology? How will these achievements help to uplift the poorer sections of the society?(UPSC IAS/2021)

    Mentor comments:With 970 million Indians in the process of exercising their franchise in the ongoing general election, what do scientists look for in the polls? Who do they want to vote for, and what are the fundamental issues they want to see their elected representatives resolve and implement? There are five fundamental issues that scientists want the new government to solve and their elected representatives to pay urgent attention to.

    Why in the news? 

    Supporting science and scientists is essential in India’s quest to become a major economic powerhouse

    Need to Increase spending

    • Increase Government Spending: Government should increase spending on research and development by at least 50% year-over-year for the next five years, aiming for nearly 4% of GDP by the end of the term.
    • Anusandhan National Research Foundation (ANRF): Private sector involvement can be encouraged through initiatives like ANRF, where private players are expected to contribute ₹36,000 crore over five years. Legislative measures and detailed plans should be implemented to ensure private sector participation, possibly through mechanisms like escrow accounts.
    • Infrastructure Improvement: Public sector institutions, including universities and research institutions, require modernization of physical and intellectual infrastructure. This includes upgrading science laboratories in undergraduate colleges, state and central universities, and specialized research institutions.
    • Skilled Workforce Development: Increased funding needs to be complemented with efforts to raise a skilled scientific workforce. This involves not only hiring quality teachers and researchers but also nurturing existing human resources and providing opportunities for skill development.

     Focus on merit

    • Globally accepted standards: Implement globally accepted standards for hiring in educational and research institutions, ensuring transparency, speed, and freedom from external influence. Selection criteria should strictly focus on merit, with competent committees responsible for unbiased decision-making.
    • Timely Appointments: Aim to streamline the hiring process so that it takes at most six months from the time of application to providing appointment letters. This ensures efficiency in recruitment and reduces delays in filling vacant positions.
    • Robust Grant Management System: Establish a robust science grant management system that minimizes red tape in grant submission and expedites the disbursement of grants and student fellowships. Emphasize timely allocation of funds to researchers to facilitate uninterrupted research activities.

    Ensure freedom

    • Freedom of Expression: Scientists require the freedom to speak and write based on evidence, without interference, to foster a culture of open inquiry and knowledge dissemination to flourishing start-up ecosystem is essential for translating academic research into practical innovations that benefit society.
    • Autonomy for Scientists: Provide full autonomy to individual scientists to take leave to establish companies, hire scientific staff without excessive paperwork, and allocate research funds as they see fit.Scientists should have flexibility in decision-making, including the freedom to tra

    Conclusion: Scientists’ demands underscore the critical need for robust support and infrastructure to drive scientific research and innovation in India. By addressing these fundamental issues, the incoming government has the opportunity to foster a vibrant scientific community that contributes significantly to the nation’s economic growth and societal development.

  • Vasuki Indicus: 50ft Snake Fossil Found in Gujarat

    Why in the news?

    A fossil unearthed in Gujarat’s Kutch in 2005, initially presumed to belong to a giant crocodile, has been revealed as one of the largest snake ‘Vasuki Indicus’ ever to exist on Earth.

    About Vasuki Indicus

    • ‘Vasuki Indicus’ is the name given by IIT Roorkee Scientists to the fossil specie.
    • The name “Vasuki” derives from the mythological snake depicted often encircling the neck of the Hindu deity Shiva.

    Physical characteristics of Vasuki

    • It is estimated to measure between 11m (36ft) and 15m (49.22ft) in length,
    • It belonged to the extinct Madtsoiidae snake family.
      • Its size could potentially surpass the extinct Titanoboa in size, with its closest relatives identified as Titanoboa and Python.
    • The serpent’s large size indicates it was a slow-moving, ambush predator, akin to an anaconda, as suggested by researchers.
      • Like contemporary pythons and anacondas, Vasuki Indicus presumably employed Constriction (suffocation) as its primary method of prey capture.

    Age and Geological Context:

    • Recovered from the Panandhro Lignite Mine in Kutch, the fossil dates back to the Middle Eocene period, approximately 47 million years ago.
    • Analysis of the well-preserved vertebrae indicates the snake’s existence during a warm geological interval with average temperatures estimated at 28°C.
    • ‘Vasuki’ is believed to represent an extinct relic lineage originating in India, with subsequent India-Asia collision facilitating its dispersal from the subcontinent into North Africa through southern Eurasia.
      • Vasuki thrived during a time when the continents of Africa, India, and South America were amalgamated into a single landmass.

    Significance for India

    • This discovery underscores India’s rich biodiversity.
    • It holds immense potential in unraveling insights into the evolutionary process, continental shifts, and India’s pivotal role in the origin of various species, particularly reptiles.

    Middle Eocene Period

    • It is part of the Cenozoic Era, which began about 66 million years ago and continues to the present day.
    • During the Middle Eocene, the Earth experienced a greenhouse climate, with global temperatures significantly warmer than today.
    • The poles were ice-free, and forests extended into higher latitudes than they do today.
    • The period was characterized by relatively high levels of carbon dioxide in the atmosphere, contributing to the warm climate.
    • The Middle Eocene was a time of significant diversification and evolution of various groups of organisms.
    • Mammals continued to diversify and evolve, with the emergence of early primates, rodents, and hoofed mammals.
    • The period also saw the rise of modern bird groups and the diversification of flowering plants (angiosperms).
    • The Middle Eocene was marked by tectonic activity, including the ongoing separation of continents and the formation of mountain ranges in various parts of the world.
    • For example, the collision of the Indian Plate with the Eurasian Plate during this time led to the uplift of the Himalayas.

     

    PYQ:

    [2020] The word ‘Denisovan’ is sometimes mentioned in media in reference to-

    (a) Fossils of a kind of dinosaurs

    (b) An early human species

    (c) A cave system found in North-East India.

    (d) A geological period in the history of the Indian subcontinent

  • [pib] SPACE Testing & Evaluation hub for Sonar Systems

    Why in the news?

    A state-of-the-art SPACE testing and evaluation hub for sonar systems, designed for the Indian Navy, was inaugurated by DRDO.

    About Submersible Platform for Acoustic Characterisation and Evaluation (SPACE)

    • The SPACE is located at the Underwater Acoustic Research Facility in Kulamavu, Idukki, Kerala.
    • It is developed by the Naval Physical & Oceanographic Laboratory of DRDO.
    • It is set to become a premier testing and evaluation hub for sonar systems deployed on various Indian Navy platforms, including ships, submarines, and helicopters.

    Key Features of SPACE:

    • SPACE comprises two distinct components:
    1. Floating Platform on the water surface and
    2. Submersible platform capable of descending to depths of up to 100 meters using winch systems.
    • After completing operations, the submersible platform can be winched up and docked with the floating platform, ensuring efficient utilization of resources.

    Functions and Capabilities:

    • The primary function of SPACE is the evaluation of complete sonar systems, facilitating rapid deployment and retrieval of scientific packages such as sensors and transducers.
    • It will serve for surveying, sampling, and data collection of air, surface, mid-water, and reservoir floor parameters utilizing modern scientific instrumentation.
    • It will address the data processing and sample analysis requirements, ushering in a new era of Anti-Submarine Warfare research capabilities.

    What is SONAR?

    • SONAR stands for “Sound Navigation and Ranging.”
    • It’s a technique used for detecting and locating objects underwater by transmitting sound waves and analyzing the echoes they produce.

    Here’s how it works:

    1. Sound Transmission: A SONAR system sends out pulses of sound waves, typically at frequencies beyond the range of human hearing. These sound waves travel through the water and propagate in all directions.
    2. Object Detection: When the sound waves encounter an object underwater, such as a submarine, seafloor, or marine life, they reflect off the object and return to the SONAR system as echoes.
    3. Echo Reception: The SONAR system receives the echoes of the transmitted sound waves and measures the time it takes for them to return. By knowing the speed of sound in water and the time it takes for the echoes to return, the system can calculate the distance to the object.
    4. Data Analysis: The received echoes are processed and analyzed to create a visual representation of the underwater environment. This information helps operators identify and locate objects of interest, navigate safely, and map the seafloor.

     

    PYQ:

    [2020] “The experiment will employ a trio of spacecraft flying in formation in the shape of an equilateral triangle that has sides one million kilometres long, with lasers shining between the craft,” The experiment in question refers to-

    (a) Voyager-2

    (b) New Horizons

    (c) LISA Pathfinder

    (d) Evolved LISA

  • What is Exoatmospheric Interception?

    Why in the news?

    Israel successfully intercepted an Iranian missile outside Earth’s atmosphere using an Exoatmospheric kill vehicle.

    Israeli Air-Defence Systems


    Israel’s multi-layered air defence system, including Iron Dome, The Arrow, and David’s Sling, was activated in anticipation of the attack.

    1. IRON DOME: The short-range Iron Dome air defence system was built to intercept the kind of rockets fired by the Hamas in Gaza. Developed by state-owned Rafael Advanced Defense Systems with US backing, it became operational in 2011. Each truck-towed unit fires radar-guided missiles to blow up short-range threats like rockets, mortars and drones in mid-air.
    2. ARROW: The long-range Arrow-2 and Arrow-3 system, developed by Israel with an Iranian missile threat in mind, is designed to intercept ballistic missiles outside the earth’s atmosphere, using a detachable warhead that collides with the target. It operates at an altitude that allows for the safe dispersal of any non-conventional warheads.
    3. DAVID’S SLING: This mid-range system is designed to shoot down ballistic missiles fired from 100 km to 200 km away. Developed and manufactured jointly by Israel’s state-owned Rafael Advanced Defense Systems and the U.S. Raytheon Co, David’s Sling is also designed to intercept aircraft, drones and cruise missiles.

    What are Exoatmospheric Missiles?

    • Exoatmospheric missiles, or anti-ballistic missiles (ABMs), operate beyond Earth’s atmosphere to intercept incoming ballistic missiles.
    • They employ advanced sensors and guidance systems to detect, track, and destroy targets in space.
    • Kinetic kill vehicles, like the Exoatmospheric Kill Vehicle (EKV), rely on high-speed collisions to neutralize threats.
    • It travels at hypersonic speed.

    Working Mechanism of Exoatmospheric Missiles:

    • The EKV uses a solid rocket booster to propel itself into space.
    • Advanced sensors and onboard computers identify and track incoming threats.
    • Precise maneuvering allows the missile to navigate towards the target.
    • Impact from a high-speed collision eliminates the threat without traditional warheads, enhancing speed and accuracy.

    PYQ:

    [2018] What is “Terminal High Altitude Area Defense (THAAD)”, sometimes seen in the news?

    (a) An Israeli radar system

    (b) India’s indigenous anti-missile programme

    (c) An American anti-missile system

    (d) A defence collaboration between Japan and South Korea

  • Geroscience: the Science related to Ageing

    Why in the news?

    • Dr. Daniel Belsky from Columbia University introduced the concept of “Geroscience” and develops a blood test, termed “gerozyme,” to measure aging pace by studying DNA methylation.
    • Various research groups explore drugs like Metformin and Rapamycin to target aging and enhance immunity in the elderly.

    What is Geroscience?

    • Geroscience refers to the interdisciplinary field focused on understanding the biological mechanisms of ageing and age-related diseases.
    • It involves studying various factors, including DNA methylation, enzyme activity (such as the gerozyme), socio-economic influences, and lifestyle interventions like nutrition, exercise, and music therapy.
    • It aims to develop strategies, such as drug interventions targeting specific ageing-related processes, to promote healthy ageing and combat age-related conditions like dementia.

    What is DNA Methylation?

    • DNA Methylation is a process in which methyl groups (CH3) are added to the DNA molecule.
    • This modification typically occurs at cytosine bases within the DNA sequence, often in the context of CpG dinucleotides (where cytosine is followed by guanine).
    • DNA methylation plays a crucial role in regulating gene expression and maintaining genome stability.
    • It can affect various cellular processes, including embryonic development, X-chromosome inactivation, genomic imprinting, and silencing of repetitive DNA elements.
    • Aberrant DNA methylation patterns have been implicated in various diseases, including cancer and neurological disorders.

    Drug Interventions in Geroscience

    • Metformin and TORC1 inhibitors show promise in targeting aging and improving immune response in seniors.
    • Research proposes rapamycin’s potential in extending longevity and combating age-related diseases.

    Impact of Socio-Economic Factors in Ageing

    • Dr. Belsky’s research reveals the influence of socioeconomic status on DNA methylation levels, highlighting the role of disadvantage in ageing.
    • Columbia Aging Centre emphasizes the role of a balanced diet in supporting brain health and reducing inflammation.
    • Healthline.com advocates for proteins, healthy fats, and antioxidant-rich foods to promote healthy ageing, crucial for India’s ageing population.

    PYQ:

    [2011] At present, scientists can determine the arrangement or relative positions of genes or DNA sequences on a chromosome. How does this knowledge benefit us?

    1. It is possible to know the pedigree of livestock.
    2. It is possible to understand the causes of all human diseases.
    3. It is possible to develop disease-resistant animal breeds.

    Which of the statements given above is/are correct?

    (a) 1 and 2 only

    (b) 2 only

    (c) 1 and 3 only

    (d) 1, 2 and 3

  • India, US to reactivate Indian Ocean Observing System (IndOOS)

    Why in the news?

    India and the US have decided to reactivate the Indian Ocean Observing System (IndOOS).

    What is IndOOS?

    • Established in 2006, the Indian Ocean Observing System (IndOOS) comprises moored buoys strategically placed across the Indian Ocean.
    • It consists of a network of 36 moored buoys in the high seas to collect high-resolution ocean and atmospheric data for weather forecasts.
    • These buoys measure various parameters like seawater temperature, salinity, ocean currents, atmospheric humidity, and wind speed.
    • IndOOS originally focused on understanding and predicting the monsoon.
    • It now aids in climate modelling under changing climatic conditions and predicts extreme weather events such as floods, droughts, and cyclones.

    Objectives of IndOOS include:

    1. The primary objective of IndOOS is to provide continuous and high-quality oceanographic and meteorological data to support informed decision-making and improve scientific understanding of weather and climate.
    2. It aims to foster partnerships among Indian Ocean countries and beyond to enhance long-term monitoring and forecasting capabilities.

    Need for IndOOS

    • The Indian Ocean region, home to nearly one-third of the global population, faces significant vulnerabilities due to climate change and extreme weather events.
    • Fisheries and rain-dependent agriculture in these regions are heavily influenced by the monsoon, making accurate weather forecasts crucial for mitigating potential damage to crops and livelihoods.
    • The Indian Ocean’s influence extends beyond its boundaries, redistributing heat across the planet and modulating the climate in the Pacific, North Atlantic and Mediterranean Sea.

    Observing Networks under IndOOS

    • The framework for IndOOS comprises five observing networks:
    1. Research Moored Array for African-Asian-Australian Monsoon Analysis and Prediction (RAMA)
    2. Profiling floats (part of the global Argo array)
    3. Surface drifters (Global Drifter Program, GDP)
    4. Repeat temperature lines (eXpendable Bathy Thermograph (XBT) network)
    5. Tide gauges
    • These networks are complemented by satellite observations of surface wind, sea level, temperature, salinity, rainfall, and ocean color.

    Partnerships and Support:

    • IndOOS originated from discussions among scientists during the First International Conference on the Ocean Observing System for Climate (OceanObs) in 1999.
    • An implementation plan for IndOOS was developed by the Indian Ocean Panel, established under the Climate and Ocean Variability, Predictability, and Change (CLIVAR) and Intergovernmental Oceanographic Commission – Global Ocean Observing System (IOC-GOOS) programs.

  • Crafted in Indian labs, NexCAR19 takes India to next level in Cancer Care

    Why in the News? 

    • President Droupadi Murmu launched India’s first indigenously-developed CAR T-cell therapy, hailing it as a major breakthrough against cancer.
    • This therapy was developed by the Indian Institute of Technology (IIT) Bombay and the Tata Memorial Centre, and it is known as ‘NexCAR19 CAR T-cell therapy’.

    BACK2BASICS:

    What is CAR T cell thearpy? 

    CAR T-cell therapy is a type of immunotherapy that involves modifying a patient’s T cells, a type of white blood cell that plays a crucial role in the immune system, to recognize and attack cancer cells. This therapy is designed to target specific proteins found on the surface of cancer cells, such as CD19, which is commonly found on B cells.

    How are CAR-T cells made?

    Significance of CAR T Thearpy:

    • Promising results:  This therapy has shown promising results in treating some types of blood cancers, including certain kinds of lymphoma, pediatric leukemia, and adult leukemia.  It has shown with approximately 70% of patients responding to the treatment.
    • Less time for treatment: CAR T-cell therapies are generally a single infusion with less than 2 weeks of inpatient care, while stem cell transplants and chemotherapy treatment regimens can take months to complete

    Limitiations of CAR-T Therapy:

    • Risks of CAR-T Therapy: The efficacy of CAR-T therapy varies from person to person, and it is too early to declare it a complete cure. While it has shown remarkable progress in challenging cases, its effectiveness is not universal.
    • High Cost Therapy: NexCAR19 is priced at a fraction of its US counterpart, it remains relatively high for many Indians, ranging from ₹40 to 45 lakh.
    • It’s Side Effects includes:
      • Cytokine Release Syndrome (CRS): CRS is the most common side effect of CAR-T therapy, triggering an ‘Inflammatory Response’ that leads to immune system hyperactivity.
      • Neurotoxicity: Although not observed in early-stage clinical trials, neurotoxicity is a common side effect of CAR-T therapy that can manifest as confusion, seizures, or difficulty speaking or walking.
      • Infections and Blood Cell Counts: Patients undergoing CAR-T therapy may experience infections and low blood cell counts as anticipated side effects.

    Conclusion: India’s is moving towards heralding a breakthrough in Cancer Care Therapy. Despite cost challenges, Government efforts are aimed to enhance accessibility and better outputs in Healthcare Sector.

  • Microbial Formulations for Enhanced Agricultural Productivity

    Why in the news?

    The Indian Institute of Spices Research (IISR), located in Kozhikode, has introduced and validated three new microbial formulations (Bactolime, Bactogypsum, and Trichogypsum) aimed at improving agricultural productivity.

    IISR Microbial Formulations

    • It leverages granular lime and gypsum to address soil pH issues while simultaneously delivering beneficial microorganisms.
    • These are developed using IISR’s proprietary patent-applied technology.
    • The formulations are:
    1. Bactolime:
    • Bactolime, the flagship product, combines beneficial bacteria, specifically plant growth-promoting Rhizobacteria, with liming material in a single formulation.
    • This integration ensures not only the correction of soil acidity but also the provision of essential nutrients to plants.
    1. Bactogypsum and Trichogypsum:
    • The other two formulations, Bactogypsum and Trichogypsum, utilize gypsum as a base material to buffer soil pH to a near-neutral level.
    • By creating an optimal environment for beneficial microbes, these formulations improve soil structure, enhance the availability of secondary nutrients, and boost overall microbial activity.

    Back2Basics: Soil Microbes

    Soil microbes refer to microorganisms that inhabit the soil environment and play vital roles in soil health, nutrient cycling, and plant growth. These microorganisms are diverse and include bacteria, fungi, archaea, protozoa, and algae.

    Function Benefits
    Nitrogen-Fixing Bacteria Convert atmospheric nitrogen into ammonia, making it available to plants Enhance soil fertility, improve plant growth and yield
    Phosphate-Solubilizing Bacteria Solubilize insoluble phosphorus, making it available to plants Increase phosphorus availability, promote root development and flowering
    Mycorrhizal Fungi Form symbiotic relationships with plant roots, facilitate nutrient uptake Improve soil structure, enhance nutrient absorption, increase plant resilience
    Plant Growth-Promoting Rhizobacteria (PGPR) Stimulate plant growth, enhance nutrient uptake, suppress pathogens Promote root development, improve nutrient efficiency, increase stress tolerance
    Actinomycetes Decompose organic matter, produce antibiotics Enhance soil fertility, control soil-borne diseases and pests
    Azotobacter Fix atmospheric nitrogen, produce growth-promoting substances Increase nitrogen availability, stimulate root growth and nutrient uptake
    Azospirillum Fix atmospheric nitrogen, produce phytohormones Enhance nitrogen availability, promote root growth and stress tolerance
    Bacillus spp. Produce antimicrobial compounds, enzymes Control plant diseases and pests, improve soil health and fertility

     

    PYQ:

    [2016] Why does the Government of India promote the use of ‘Neem-coated Urea’ in agriculture?

    (a) Release of Neem oil in the soil increases nitrogen fixation by the soil microorganisms

    (b) Neem coating slows down the rate of dissolution of urea in the soil

    (c) Nitrous oxide, which is a greenhouse gas, is not at all released into atmosphere by crop fields

    (d) It is a combination of a weedicide and a fertilizer for particular crops

  • NASA to establish Coordinated Lunar Time

    Why in the news?

    • The White House directed NASA to establish a time standard for the Moon, named Coordinated Lunar Time (LTC) by the end of 2026.
    • This move aims to facilitate coordination among international bodies and private companies operating on the lunar surface.

    Timekeeping on the Moon

    • The Moon has its own day and night cycle, which lasts about 29.5 Earth days.
    • Currently, the time on the Moon is measured using Coordinated Universal Time (UTC), which is the same timekeeping system used on the Earth.
    • However, because the Moon’s day is much longer than Earth’s day, it would be difficult to use UTC for day-to-day activities on the Moon.

    Coordinated Universal Time (UTC)

    • UTC is a time standard introduced on January 1, 1960.
    • It is based on International Atomic Time (TAI), which is maintained by atomic clocks around the world.
    • It is the primary time standard used by many countries, international organizations, and scientific research institutions.
    • It is expressed as a 24-hour clock and is used to indicate the time offset from Coordinated Universal Time (UTC+0).
    • Time zones are defined as an offset from UTC, with some time zones being ahead of UTC (UTC+1, UTC+2, etc.) and others being behind UTC (UTC-1, UTC-2, etc.).
    • It is adjusted periodically to account for changes in the Earth’s rotation, which can cause variations in the length of a day.
    • These adjustments are made through the addition of leap seconds to UTC, which help to keep the time standard synchronized with the Earth’s rotation.

    Need for a Lunar Time Standard

    1. Earth’s Time Standard:
    • Earth’s time standard is primarily based on Coordinated Universal Time (UTC), set by the International Bureau of Weights and Measures in Paris, France.
    • UTC is determined by a weighted average of over 400 atomic clocks worldwide, providing a universally agreed-upon standard for time measurement.
    1. Challenges with Earth’s Time Standard on the Moon:
    • Time on the Moon differs from Earth due to factors like gravity and the Moon’s rotation.
    • Time on the Moon ticks slightly faster due to lower gravity (about 56 microseconds every day) as per Einstein’s Theory of General Relativity.

    Establishing a Lunar Time Standard:

    1. Technical Considerations:
    • LTC cannot be based on UTC due to the time differences between Earth and the Moon.
    • Current lunar missions operate on independent timescales linked to UTC, but this approach becomes challenging with multiple space crafts on the Moon.
    1. Deployment of Atomic Clocks:
    • Like on Earth, atomic clocks can be deployed on the lunar surface to establish a time standard.
    • A 2023 report suggests placing at least three atomic clocks on the Moon’s surface, accounting for variations in lunar rotation and local gravity.
    1. Synthesizing Time Measurements:
    • Atomic clocks placed at different lunar locations will tick at the Moon’s natural pace.
    • Output from these clocks will be combined using algorithms to generate a unified time standard for the Moon, tied back to UTC for Earth operations.

    Earth’s Latitudinal Variations on Time

    • On Earth, atomic clocks placed at different latitudes experience variations in time due to differences in rotational speed of Earth.
    • Earth rotates faster at the Equator compared to the poles, resulting in different time measurements.

    Benefits offered by Lunar Time

    • Having a lunar time zone would also make it easier for scientists and researchers to conduct experiments and collect data on the Moon.
    • It would also help to prevent confusion and errors that could arise from using different timekeeping systems on Earth and the Moon.

    PYQ:

    [2015] Tides occur in the oceans and seas due to which among the following?

    1. The gravitational force of the Sun

    2. The gravitational force of the Moon

    3. The centrifugal force of the Earth

    Select the correct option using the code given below:

    (a) 1 Only

    (b) 2 and 3 only

    (c) 1 and 3 only

    (d) 1, 2 and 3