Nasa unveils program to defend Earth from asteroid attack

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Note4students

Mains Paper 3: Science & Technology | Awareness in the fields of IT, Space, Computers, robotics, nano-technology, bio-technology

From UPSC perspective, the following things are important:

Prelims level: International Asteroid Warning Network, Double Asteroid Redirection Test (DART) mission

Mains level: Threat posed by Near-Earth objects and scientific measures to counter it


News

Countering NEOs

  1. The US and other nations have long sought to track “near-earth objects,” or NEOs, coordinating efforts through the International Asteroid Warning Network and the United Nations
  2. The Trump Administration now wants to enhance those efforts to detect and track potential planet killers and to develop more capable means to deflect any that appear to be on a collision course
  3. The government unveiled new goals this week for Nasa’s work on countering NEOs over the next decade

NEO threat

  1. Nasa has documented roughly 96% of the objects large enough to cause a global catastrophe since work began in 1998
  2. More than 300,000 objects larger than 40 meters (131 feet) wide orbit the sun as NEOs, according to Nasa estimates
  3. Many of these were difficult to detect more than a few days in advance
  4. Forty meters is about the average size an object must be to make it through the atmosphere without burning up

Double Asteroid Redirection Test (DART) mission

  1. The goal of this mission is to impact the smaller “moonlet” of a binary asteroid called Didymos, to learn how well we may be able to alter the course of a future killer rock
  2. It is expected to be complete by 2021-2022

Back2Basics

International Asteroid Warning Network

  1. The International Asteroid Warning Network (IAWN) was established in 2014 to address the recommendations for an international response to the near-Earth Object impact threat
  2. It was endorsed by the UN Committee on the Peaceful Uses of
    Outer Space and the General Assembly resolution 68/75
  3. It forms an international association of institutions involved in detecting, tracking, and characterizing NEOs (Near Earth Objects) to provide the best information available on the NEO hazard and any impact threat
  4. The IAWN is also tasked to use well-defined communication
    plans and protocols to assist Governments in the analysis of asteroid impact
    consequences and to support the planning of mitigation responses
  5. IAWN serves the global community as the authoritative source of accurate and up-to-date information on near-Earth objects and NEO impact risks. Information is freely available to all interested parties
International Space Agencies – Missions and Discoveries
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