solar system
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Hubble Confirms Huge Incoming Comet Has Largest Known Nucleus
A comet with a nucleus larger than Rhode Island has been on a journey toward the Sun for more than a million years. In February, researchers found that the comet is 136 km wide, and new observations from NASA’s Hubble Space Telescope now confirm that this is in indeed the largest comet nucleus ever observed,…
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Mega Comet Arriving From the Oort Cloud Is 137 km Wide
Bernardinelli-Bernstein is officially the largest comet ever discovered, according to updated observations of the inbound object.
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New Views From Space Show Comet Leonard Zooming Toward the Sun
Sun-gazing spacecraft managed by NASA and the European Space Agency are providing unique views of Comet Leonard, an ultrafast chunk of rock, dust, and ice that’s currently travelling through the inner solar system.
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Astronomers Think a Near-Earth Asteroid Is a Chunk of the Moon
Every April for the next several hundred years, a small asteroid is visible to a select few telescopes on Earth. That asteroid is Kamo’oalewa, a space rock that a team of astronomers says is likely an ancient fragment of our Moon.