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Asteroid Bennu

Dragon
Dragon
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Asteroid Bennu Empty Asteroid Bennu

Post by Dragon Wed Oct 21, 2020 11:40 pm

NASA’s first mission to return a sample from an ancient asteroid arrived at its target, the asteroid Bennu, on Dec. 3, 2018. This mission, the Origins, Spectral Interpretation, Resource Identification, Security-Regolith Explorer, or OSIRIS-REx, is a seven-year long voyage set to conclude upon the delivery to Earth of at least 2.1 ounces (60 grams) and possibly up to almost four and a half pounds (two kilograms) of sample. It promises to be the largest amount of extraterrestrial material brought back from space since the Apollo era.

The 20-year anniversary of the asteroid’s discovery was in September 2019 — and scientists have been collecting data ever since. Here’s what we already know (and some of what we hope to find out) about this pristine remnant from the early days of our solar system.

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Dragon
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Post by Dragon Wed Oct 21, 2020 11:43 pm

Asteroid Bennu Bennu-twelve-image-mosaic
Credits: NASA/Goddard/University of Arizona

This mosaic image of asteroid Bennu is composed of 12 PolyCam images collected on Dec. 2, 2018 by the OSIRIS-REx spacecraft from a range of 15 miles (24 km).

Source / Image Courte4sy


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Dragon
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Post by Dragon Thu Oct 22, 2020 12:02 am



When NASA’s OSIRIS-REx spacecraft arrived at asteroid Bennu in December 2018, its close-up images confirmed what mission planners had predicted nearly two decades before: Bennu is made of loose material weakly clumped together by gravity, and shaped like a spinning top.


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