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'Ask a Spaceman' Seeks Out the Elusive Quark Star in Finale
November 01, 2018 | ArticleAfter guiding us across the universe, astrophysicist and Space.com columnist Paul Sutter closes his basic astronomy series this week by looking at the arguments for and against the existence of quark stars.
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Happy Birthday, Arecibo! At 55, Iconic Radio Telescope Survives Hurricane, Funding Challenges
November 01, 2018 | ArticlePuerto Rico's Arecibo Observatory, the second largest radio telescope in the world, celebrates the 55th anniversary of its grand opening today (Nov. 1).
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Skull-Shaped 'Halloween Asteroid' Will Zip by Earth Again This Month
November 01, 2018 | ArticleIf you're suffering from Halloween withdrawal, a spooky asteroid will soon be here to help.
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6 Minutes of Terror: What NASA's InSight Mars Lander Faces to Reach the Red Planet
November 01, 2018 | ArticleNASA has enjoyed a nice run of success landing robots on Mars lately, but that doesn't mean the agency is getting cocky ahead of next month's touchdown of the InSight lander.
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A Cosmic Dark Knight Rises in Spooky 'Bat Wing' Hubble Photo
October 31, 2018 | ArticleStand aside, Batman — your bat signal has nothing on a huge "bat shadow" the Hubble Space Telescope spotted in a distant gas cloud.
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The Milky Way Has a Gigantic Skeleton in Its Closet
October 31, 2018 | ArticleScientists have identified the corpse of a galaxy that fell into the Milky Way about 10 billion years ago in what was likely the last major overhaul to our home galaxy during its development.
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Inside 3 Mars Meteorites: A Different Path for 'Building Blocks of Life'?
October 31, 2018 | ArticleOrganic molecules — compounds that on Earth can be linked with life — encased within meteorites from Mars may have formed on the Red Planet from chemical reactions much like those found in batteries on Earth, a new study finds.
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NASA's Planet-Hunting Kepler Space Telescope Is Done. What Will Happen to It?
October 31, 2018 | ArticleFor NASA's Kepler space telescope, the world will end in ice rather than fire.
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Signs of Earth's Weird, Elusive 'Dust Moons' Finally Spotted
October 31, 2018 | ArticleDust clouds that orbit Earth like moons may finally have had their existence confirmed after more than a half-century of controversy, new research finds.
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The Violent Deaths of Giant Blue Stars May Spawn Exotic Matter
October 31, 2018 | ArticleWhen the biggest stars in the universe die, they may form exotic states of matter generally not seen in the universe since fractions of a second after the Big Bang.
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