NASA delays launch of DART asteroid defense mission – Space.com


NASA has delayed the launch of its first-ever planetary protection mission aimed toward deflecting doubtlessly hazardous asteroids from colliding with Earth. 

The mission, referred to as Double Asteroid Redirection Test (DART), will ship a spacecraft to check crash into the near-Earth binary asteroid system referred to as Didymos, in 2022. NASA introduced Feb. 17 that this 12 months’s main launch window of July 21 to Aug. 24 is now not an possibility. As an alternative, the area company is concentrating on a backup window that opens Nov. 24 and runs to Feb. 15, 2022, according to a statement from NASA

The choice to postpone the launch was made by NASA Science Mission Directorate (SMD) senior management following a danger evaluation of the DART project schedule. Delaying the launch of the mission won’t have an effect on the spacecraft’s arrival at its goal, which is slated for October 2022, NASA officers stated. 

Associated: Potentially dangerous asteroids (images) 

The latest danger evaluation revealed technical points with two main components of the spacecraft, together with its major instrument, the Didymos Reconnaissance and Asteroid Digital camera for Optical-navigation (DRACO), and its Roll-Out Photo voltaic Arrays (ROSA). The DRACO imager must be strengthened to make sure it might probably face up to launch, whereas the photo voltaic arrays are delayed following provide chain points prompted partly by the COVID-19 pandemic.

“At NASA, mission success and security are of the utmost significance, and after a cautious danger evaluation, it grew to become clear DART couldn’t feasibly and safely launch inside the main launch window,” Thomas Zurbuchen, SMD affiliate administrator, stated within the assertion. “To make sure DART is poised for mission success, NASA directed the workforce pursue the earliest doable launch alternative in the course of the secondary launch window to permit extra time for DRACO testing and supply of ROSA, and supply a secure working setting by means of the COVID-19 pandemic.”

The DART spacecraft will launch on a SpaceX Falcon 9 rocket from Vandenberg Air Power Base in California. NASA is working with SpaceX and the company’s Launch Companies Program to determine the earliest doable launch alternative inside this secondary window. 

DART will goal a binary asteroid system that consists of a bigger asteroid referred to as Didymos, which measures about 2,540 toes (775 meters) vast, and a smaller asteroid satellite tv for pc referred to as Dimorphos, which measures 540 toes (165 m) throughout. The mission will take a look at a brand new planetary defense approach, requiring the spacecraft to slam into Dimorphos to vary the orbital velocity of the asteroid by means of a kinetic impression. If profitable, this system may very well be used to deflect asteroids that pose a menace to Earth.

“Whereas COVID-19 was not the only issue for this delay, it has been a major and critically contributing issue for a number of points,” NASA officers stated within the assertion. “Testing gear earlier than launch is an important step in all missions to make sure mission success, and challenge groups construct time into processing schedules to accommodate for potential delays.” 

NASA’s DART mission can even carry a small satellite tv for pc referred to as Gentle Italian Cubesat for Imaging of Asteroid, or LICIACube, which was constructed by the Italian Area Company to watch the impression at Dimorphos and return pictures of the occasion to Earth. The European Area Company can also be planning a follow-up mission to Dimorphos, known as Hera, which is able to assess the outcomes of the DART mission and examine the impression website on the asteroid. The Hera mission is anticipated to launch in 2023 or 2024 and can arrive on the asteroid two years later. 

Observe Samantha Mathewson @Sam_Ashley13. Observe us on Twitter @Spacedotcom and on Fb.  

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