At 4:44 IST on Tuesday, NASA's DART spacecraft, which cost $308 million

Author: Jay Kappor

(2,500 crore), will be driven at 24,000 kph into an asteroid.

It will be used if scientists find out in the future that an asteroid


asteroid is headed toward Earth and could be dangerous if it hits


Even though the asteroid doesn't threaten Earth


it will be a good test of DART's ability to move it away when it hits.


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