taam wrote:Thank you for this video, I remember E. Musk is a genius who will surely help the astro community.
A video to compare the size of the different asteroids!
by Yohan Demeure, Scientific EditorYohan Demeure, Scientific Editor
2th May 2020
Floating mountains on Pluto cannot be invented!
New data reveals five unlikely elements on the dwarf planet.
For such a small planet, Pluto has an incredibly diverse surface where we find floating glaciers, landforms curiously riddled with craters, misty skies and multicolored landscapes. Scientists at the New Horizons mission say the distant dwarf planet is even stranger than they imagined. It would notably have ice volcanoes, floating mountains and chaotic behavior moons.
Scientists have unveiled the observations obtained by the New Horizons probe when it flew over Pluto. Presented at the annual meeting of the planetary science department of the American Astronomical Society, these data show that Pluto is not what we thought.
The team received a good grade for exploration, but a very poor grade for its forecasting ability, reports Alan Stern, principal investigator at New Horizons. “Pluto's system totally baffles us. "
ICE VOLCANOES
Two holes observed near the south pole of Pluto may well be volcanic ice calderas. These depressions are at the top of two gigantic mountains, Mont Wright and Mont Piccard. The two mountains are a few kilometers high and at least a hundred kilometers wide, and have a shape similar to that of the Hawaiian shield volcanoes. Except that instead of molten lava, Plutonian volcanoes would spit ice, and possibly nitrogen, carbon monoxide, or a liquid porridge dredged from a buried ocean.
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It is only two steps away from being circumpolar, that is to say that it will never go to bed, like the stars that make up the constellations of the Big Dipper, the Little Dipper, the Dragon, Cassiopeia and Cepheus. In reality, it will become (almost) from July 17. That night, seen from the Earth and in the latitudes of metropolitan France, his hair will graze the northern horizon, around 2 am. Its visibility period at night lengthens. https://www.futura-sciences.com/science ... oir-81591/
[Solar Orbiter] The first images of the sun revealed
The Solar Orbiter space probe, launched on February 10, 2020, gives us for the first time its images of the sun. These were unveiled on Thursday July 16 by the European Space Agency (Esa) during a live event on its web tv.
Taken on May 30 by the extreme ultraviolet imager of Solar Orbiter, this image was taken while the probe was halfway between Earth and the sun.
© Solar Orbiter / EUI Team / ESA & NASA; CSL, IAS, MPS, PMOD / WRC, ROB, UCL / MSSL
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The launch of the James Webb space telescope postponed to October 2021
AFP • 16 / 07 / 2020
NASA announced Thursday that the launch of the $ 10 billion James Webb Large Space Telescope by an Ariane 5 rocket would be postponed again, to October 31, 2021 instead of March, due to the pandemic and other development concerns.
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