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9 hours ago · The eccentricity of the orbit, and thus the type of conic section, is determined by the energy and the angular momentum of the orbiting body. Planets do not have sufficient energy to escape the Sun, and so their orbits are ellipses, to a good approximation; because the planets pull on one another, actual orbits are not exactly conic sections.
1 day ago · Mercury (planet) Surface temp. Mercury is the first planet from the Sun and the smallest in the Solar System. In English, it is named after the ancient Roman god Mercurius ( Mercury ), god of commerce and communication, and the messenger of the gods. Mercury is classified as a terrestrial planet, with roughly the same surface gravity as Mars.
9 hours ago · The true orbit is the shape of the orbit viewed perpendicular to the plane of the orbital motion. According to the radial velocity versus time, [73] the radial separation of A and B along the line of sight had reached a maximum in 2007, with B being further from Earth than A.
1 day ago · 3:46. OSIRIS-REx Returning Asteroid Samples To Earth. Space.com. 3:59. NASA Accidentally Broadcasts Space Station Medical Emergency Drill. Space.com. NASA Mars Odyssey orbiter has been rotated to capture imagery of the Red Planet that would be similar to what an astronaut would see. Odyssey Deputy Project Scientist Laura Kerber explains.
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9 hours ago · Venus is the second planet from the Sun. It is a terrestrial planet and is the closest in mass and size to its orbital neighbour Earth. Venus is notable for having the densest atmosphere of the terrestrial planets, composed mostly of carbon dioxide with a thick, global sulfuric acid cloud cover.
4 hours ago · Jakob Robnik, Adrian E. Bayer, Maria Charisi, Zoltán Haiman, Allison Lin, Uroš Seljak
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7 hours ago · New research published in Nature shows that the quality of the model's output gradually degrades when AI trains on AI-generated data. As subsequent models produce output that is then used as training data for future models, the effect gets worse. Ilia Shumailov, a computer scientist from the University of Oxford, who led the study, likens the ...
