Hayabusa 2: Asteroid image shows touchdown marks

Hayabusa 2: Asteroid image shows touchdown marks
    A new image of Japan's Hayabusa spacecraft reveals a dark shop where it fell on the surface of an asteroid last week.

    The cause of the change in color could have been the peeling of the granules to the top by the spacecraft's propulsion or the bullet it fired on the ground.

    The purpose of the landing on the Ryugu asteroid was to collect samples from the rocks for eventual delivery to Earth.

    Hayabusa-2 arrived in Ryugu in June 2018 after a trip of three billion miles.

    The probe Japan holds on to the asteroid
    During the sampling process, the spacecraft approached the asteroid, one kilometer in width, with a tool called a specimen horn.

    On landing, a five-gram "bullet" made of tantalum was fired on the rocky surface at three hundred meters / second.

    The impacted particles must have been captured by the sampling device.

    The spacecraft then ascended to its location about twenty kilometers from the surface of the asteroid.

    The image is further away, a visual confirmation that its touch continued in the layout.
    Hayabusa two had earlier dropped a small "target mark" that resembled a "cloth bag", to Ryugu. This was used as evidence because the spacecraft descended to the coarse surface of the asteroid.

    The control devices were designed to center a circle, with a radius of about half dozen meters, located about four to five meters from the target mark.

    The Japanese space agency Jaxa originally planned the landing in October last year. But the pictures showed many huge rocks on the surface, making it difficult for mission scientists to find a large and level enough site for a sample.
    Controllers were hoping to have a radius of about a hundred meters targeted. But due to Ryugu's rugged surface features, this has been reduced to a half-dozen-meter circle for what the team members describe as a "touchdown".

    The sample range extending from the bottom of the spacecraft is one meter. It was therefore important to choose a rock-free landing site of more than fifty centimeters in height, to reduce the likelihood that the spacecraft's body could reach the rocks.
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