Take the pledge to vote

For a better tommorow#AajSawaroApnaKal
  • I agree to receive emails from News18

  • I promise to vote in this year's elections no matter what the odds are.
  • Please check above checkbox.

    SUBMIT

Thank you for
taking the pledge

Vote responsibly as each vote counts
and makes a diffrence

Disclaimer:

Issued in public interest by HDFC Life. HDFC Life Insurance Company Limited (Formerly HDFC Standard Life Insurance Company Limited) (“HDFC Life”). CIN: L65110MH2000PLC128245, IRDAI Reg. No. 101 . The name/letters "HDFC" in the name/logo of the company belongs to Housing Development Finance Corporation Limited ("HDFC Limited") and is used by HDFC Life under an agreement entered into with HDFC Limited. ARN EU/04/19/13618
CO-PRESENTED BY
LIVE TV DownloadNews18 App
News18 English
272
nda:
Needmore seats to Win
Needmore seats to Win
upa:
»
2-min read

Moon Incoming! NASA Spacecraft to Hit Asteroid in 2022

Researchers are still not sure about the target's composition: whether it is composed of solid rock, loose rubble or "softer" sand. A softer surface would absorb much of the impact force and may not be pushed as drastically as if a spacecraft hit a harder surface.

IANS

Updated:May 9, 2019, 10:06 AM IST
facebookTwittergoogleskypewhatsapp
Moon Incoming! NASA Spacecraft to Hit Asteroid in 2022
Image Credits: NASA.
Loading...
The US space agency NASA revealed on Monday details about its plan to hit a small moonlet target in a double asteroid system with a spacecraft in 2022, its first mission to demonstrate a planetary defence technique.

The asteroid, called Didymoon or Didymos B, is a moon asteroid around 150 meters tall orbiting a larger body Didymos A, the most accessible asteroid of its size from the Earth, the Xinhua news agency reported.

An international campaign is now making observations using powerful telescopes worldwide to understand the state of the asteroid system.

"The Didymos system is too small and too far to be seen as anything more than a point of light, but we can get the data we need by measuring the brightness of that point of light, which changes as Didymos A rotates and Didymos B orbits," said Andy Rivkin, a co-lead of the investigation team.

Researchers are still not sure about the target's composition: whether it is composed of solid rock, loose rubble or "softer" sand. A softer surface would absorb much of the impact force and may not be pushed as drastically as if a spacecraft hit a harder surface.

But the NASA team will eventually see the asteroid system close-up thanks to an Italian-made imager. The shoebox-sized cube satellite will record the spacecraft's impact and its aftermath.

The spacecraft called Double Asteroid Redirection Test (DART) will carry an optical navigation system to capture images that help the spacecraft reach its target.

In its latest design, DART spacecraft will be able to move by relying on small hydrazine thrusters while utilising the electric propulsion system, which will push the start of the primary launch window to July of 2021, shortening the mission flight time. Its previous planned launch time was December 2020.

The DART spacecraft will crash itself into the asteroid at a speed of approximately six kilometer per second and the collision will change the speed of the moonlet in its orbit around the main body by a fraction of one per cent, enough to be measured using telescopes on the Earth, according to the NASA.
(Get detailed and live results of each and every seat in the Lok Sabha elections and state Assembly elections in Andhra Pradesh, Odisha, Arunachal Pradesh and Sikkim to know which candidate/party is leading or trailing and to know who has won and who has lost and by what margin. Our one-of-its-kind Election Analytics Centre lets you don a psephologist’s hat and turn into an election expert. Know interesting facts and trivia about the elections and see our informative graphics. Elections = News18)
Read full article
Loading...
Next Story
Next Story

Also Watch

facebookTwittergoogleskypewhatsapp
 
 

Live TV

Loading...
Countdown To Elections Results
  • 01 d
  • 12 h
  • 38 m
  • 09 s
To Assembly Elections 2018 Results