After asteroid collision, Europe's Hera will probe 'crime scene'

This file artist’s illustration obtained from NASA on November 4, 2021 shows the DART spacecraft from behind prior to impact at the Didymos binary system/AFPPix: After NASA deliberately smashes a car-sized spacecraft into an asteroid next week, it will be up to the European Space Agency’s Hera mission to investigate the “crime scene” and uncover the secrets of these potentially devastating space rocks.

Astronomers around the world will watch DART's impact, and its effect will be closely followed to see if the mission passed the test. But scientists are not only excited to see DART's crater, but also to explore an object that is very much out of this world.Dimorphos, which orbits a larger asteroid Didymos as they hurtle together through space, provides not only a “perfect testing opportunity for a planetary defence experiment, but it is also a completely new environment,“ the ESA’s Hera mission manager Ian Carnelli said.

“If an asteroid is made up of, for example, loose gravel, approaches to disrupt it may be different than if it was metal or some other kind of rock,“ she told the International Astronautical Congress in Paris this week. And because they have low gravity compared to Earth, matter there could behave completely differently than expected.- 'Behaved almost like fluid' -

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