Space News

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Taking full advantage of a rare solar "backlight," NASA's Cassini spacecraft has discovered a faint new ring around Saturn, as well as other interesting ring features.

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Galaxies that formed just 700 million years after the birth of the universe have been detected by scientists in California and Japan.

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The hunt for extraterrestrial life has a new tool: a system of "fingerprints" scientists will use to compare alien worlds with Earth as it has appeared over the eons.

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Astronomers say they have discovered the largest planet ever found, a supersize gas giant about 1.4 times the size of Jupiter that's unlike any other known world.

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Sunspots alter the amount of energy Earth gets from the sun, but not enough to impact global climate change, scientists say.

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A concept abandoned in the 19th century is being revived by a physicist as an alternative to dark matter, despite recent announcements of proof of the theoretical substance.

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Gas giants that orbit close to their stars likely migrated inward, shaking up debris that could coalesce into Earthlike worlds, new computer models predict.

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Our radio shows have already reached dozens of planets in nearby star systems. If there are intelligent beings on these worlds, what are they listening to, and why haven't they replied in kind?

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"My! Very educated morons just screwed up numerous planetariums." That mnemonic device is just one way teachers and others are adapting to Pluto's loss of planet status.

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Goodness gracious, this great ball of "fire" is the youngest known remnant of a star explosion in the Milky Way, our home galaxy.

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This week: Pluto not a planet, "Atlantis" eruption update, jellyfish invasion, ant speed record, interview with Kilimanjaro's quickest conqueror, more.

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Pluto is no longer a planet, according to a new official definition. Instead the icy sphere will be considered one of more than 40 "dwarf planets."

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A team of researchers has found the first direct proof for the existence of dark matter, the mysterious and almost invisible substance thought to make up almost a quarter of the universe.

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Astronomers unveil a plan to define planets according to physical properties—and the proposal could add as many as 50 more planets to the solar system.

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Dust devils on the red planet help spin off poison precipitation that makes life on the surface impossible, scientists say.


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