Asteroid Bennu is a spherical carbon object, the examine of which is being carried out by the OSIRIS-REx probe. It’s deliberate that the probe will acquire soil from the asteroid, make a map of its floor and return to Earth by 2023.
Now OSIRIS-REx in the framework of the Detailed Survey is engaged in a whole examine of the asteroid. Through the mission, the probe is engaged within the development of an correct Bennu mannequin, the creation of detailed colour and panchromatic floor maps, in addition to the selection of a spot for additional touchdown on an asteroid.
For the primary time, the system recorded house explosions on the floor of Bennu virtually a 12 months in the past – in January 2019. The occasion was accompanied by the discharge into house of about 400 particles ranging in measurement from a number of centimeters to a number of tens of centimeters.
Observations of particles throughout the next related occasions confirmed that a few of them moved at a velocity of about 3.3 m / s, whereas others didn’t speed up sufficient to beat the gravity of the asteroid. Thus, sluggish particles, together with slightly massive ones, remained within the shut orbit of the asteroid, changing into a sort of satellite tv for pc.
In whole, OSIRIS-REx managed to report three house explosions, every of which occurred in other places. The possible trigger of those occasions, astronomers name the asteroid bombing micrometeorites. Alternatively, house rock explosions may be the results of a rupture of minerals containing water – they are often destroyed as a result of displacement of water molecules, which is attributable to a pointy temperature drop.
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