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The most threatening virtual impactor is on Tuesday, 24 September 2182 when there is a 1 in 2,700 chance of an Earth impact, [10] but the asteroid could be as far as the Sun is from Earth. [115] To impact Earth on 24 September 2182 Bennu must pass through a keyhole roughly 5 km wide on 25 September 2135. [123]
A sample from asteroid Bennu contains organic compounds usually found at midocean ridges on Earth, suggesting Bennu may have been part of an ancient ocean world.
Pieces of 4.5-billion-year old space rock will tell us where we came from, scientists hope
The average near-Earth asteroid, such as 2019 VF 5, passes Earth at 18 km/s. The average short-period comet passes Earth at 30 km/s, and the average long-period comet passes Earth at 53 km/s. [10] A retrograde parabolic Oort cloud comet (e=1, i=180°) could pass Earth at 72 km/s when 1 AU from the Sun.
A small portion of the material collected by the OSIRIS-REx spacecraft three years ago from the near-Earth asteroid Bennu was unveiled in an auditorium at NASA's Johnson Space Center in Houston, a ...
Bennu was chosen as the target of study because it is a "time capsule" from the birth of the Solar System. [25] Bennu has a very dark surface and is classified as a B-type asteroid, a sub-type of the carbonaceous C-type asteroids. Such asteroids are considered primitive, having undergone little geological change from their time of formation.
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"The Adventure of the Russian Grave", a short story by William Barton and Michael Capobianco, collected in Sherlock Holmes in Orbit. [13] In the novel Spider-Man: The Revenge of the Sinister Six, by Adam-Troy Castro, a veiled reference is made to Moriarty and his Dynamics. Here the work is said to still be the authority on orbital bombardment.