European space mission to examine Nasa asteroid impact site

Hera to measure Dimorphos space rock that Dart probe deliberately hit

Final preparations are under way to send a European spacecraft to an asteroid to discover what happened when a Nasa probe deliberately slammed into the space rock two years ago.

The European Space Agency’s Hera mission will survey the impact site and make detailed measurements of the battered rock, Dimorphos, to help researchers hone their strategies for defending Earth should a wayward asteroid ever threaten the planet in the future.

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