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The dark matter hypothesis isn't perfect, but the alternatives are worse You may not be a fan of dark matter, the hypothetical particle that makes up the bulk of the mass in the universe. And it's true that the dark matter hypothesis has its shortcomings — and, of course, we haven't found any dark matter particles yet.
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Perseverance Mars rover photographs its own landing debris Once their jobs were complete, EDL hardware like the parachute, backshell, heat shield, and the sky crane were all jettisoned from the Perseverance rover, crashing into Mars some distance away from the rover so as not to damage it.
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Get ready to look up in the night sky at all those meteor showers This meteor shower is known for what scientists call fireballs, which NASA describes as "larger explosions of light and color that can persist longer than an average meteor streak." Here's how to view meteor showers ...
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NASA identifies the strange object its rover found on Mars NASA suspects the tangled detritus — which stirred intrigue on the internet — is a piece of netting (called "Dacron netting") that is used in thermal blankets to protect the spacecraft from extreme temperatures and conditions, like when plunging through ...
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Is it a slice of Spanish sausage or a sun? Here's what French scientist says Ever saw a red ball of spicy fire with luminous patches glowing menacingly against a black background! Well this may sound like a modest slice of the lip-sizzling Spanish sausage, but its not. It is the latest astonishing picture taken by the James ...
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Bright galaxies blowing bubbles Ionizing radiation can kick off electrons from neutral hydrogen atoms, and in the EoR this occurred enough to ionize the Universe's gas nearly completely. A whodunnit mystery. Early galaxies are a major source of ionizing ...
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Viral star photo actually a sausage. Hoaxer physicist sorry. The most effective way to warn people not to spread viral hoaxes on social media is to say, "Don't spread viral hoaxes on social media." Probably the least effective way is to post a hoax that goes viral, and then later explain that you were trying to ...
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Humongous asteroid, larger than Statue of Unity, hurtling towards Earth? Know what NASA said Asteroids are a common part of outer space, and most of the time, they pose little to no threat to the Earth. Now, the National Aeronautics and Space Administration (NASA) has issued an important warning regarding a massive asteroid heading toward the ...
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Earth is spinning too fast — the consequences for timekeeping may be unprecedented Our home planet is in a hurry. On June 29, 2022, Earth completed the shortest day since scientists started keeping records in the 1960s, pulling off a full rotation 1.59 milliseconds faster than usual. Terrestrial haste is a trend.
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James Webb telescope's Cartwheel Galaxy snaps have space fans in a spin The James Webb Space Telescope has peered through time and huge amounts of dust to capture a new image of the Cartwheel Galaxy, revealing the spinning ring of colour in unprecedented* clarity*. Located about 500 million light-years from Earth in the ...
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