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Science & Technology Current Affairs May 2nd Week 2019
Category : Science & Technology Current
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 1. NASA’s first Planetary Defence Technology to collide with small moonlet in 2022

 
The National Aeronautics and Space Administration (NASA) will hit an asteroid named Didymoon or Didymos Bwith a spacecraft called Double Asteroid Redirection Test (DART) in 2022. 
This will be the first mission which demonstrates a planetary defence technique. The asteroid is 150 m tall which orbiting a larger body called Didymos A. 
This will help in understanding the state of the asteroid system.
The spacecraft Double Asteroid Redirection Test (DART) will carry an optical navigation system which captures the images. 
This will help the spacecraft to reach its target successfully.
The DART spacecraft will use small hydrazine thrusters which utilise the electric propulsion system.
The spacecraft will collide with the asteroid at a speed of approximately 6 kmps (km per second) and this collision will change the speed of the asteroid in its orbit by fraction of 1%.
 
2. Chandrayaan-2 to be launched in July
 
India`s second lunar mission Chandrayaan-2 will be launched on a day between 9 and 16 July this year. 
In a release, the Indian Space Research Organisation said, Chandrayaan-2’s lander will touch down near the Moon`s south pole on 6th September. 
The National space agency said, Chandrayaan-2 will have three modules in it, an orbiter, a lander named Vikram and a rover known as Pragyan.
Chandrayaan-2 will be launched using India`s most powerful rocket GSLV-Mark-3.
 
3. Amazon unveils space vision, moon lander
 
Jeff Bezos, who heads both Amazon and space company Blue Origin, unveiled a lunar lander that he said would be used to transport equipment, and possibly human beings, to the south pole of the moon by 2024.
Space agencies prepare to return humans to the moon and top engineers are racing to design a tunnel boring machine capable of digging underground colonies for the first lunar inhabitants.
Harsh conditions on the surface of the moon mean that, once up there, humans need to be shielded from radiation and freezing temperatures in structures which maintain atmospheric pressure in a vacuum.