Astronomers have measured the mass of a free-floating planet for the first time. Comparable to Saturn, it’s surprisingly massive for such rogue worlds.
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Space News & Blog Articles
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For 2026, I want to be more myself — less stress and rumination, more centeredness and joy — and that’s going to necessitate a lot more time beneath the stars.
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Many less massive galaxies appear to lack something astronomers thought was ubiquitous: a central, supermassive black hole.
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The bright Moon shines over Jupiter, Pollux and Castor on Friday evening the 2nd, then
groups right up amidst them on Saturday the 3rd.
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The Quadrantids and Eta Aquariids will have Moon trouble in 2026, but the beloved Perseids and Geminids should be glorious.
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In this month’s episode, start with one of the year’s best meteor showers, then spend some time with Jupiter, and check out a mythical queen and hunter who have ego problems. So bundle up, grab your curiosity, and come along on this month’s Sky Tour.
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Astronomers have discovered a bridge of gas and dust between two protostars, the signature of a close encounter 15,000 years ago.
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The highlights of spaceflight in 2025 have included missions to explore the Moon, Mars, and the Sun — and more is coming in the New Year.
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Jupiter nears opposition. The waxing Moon pairs with Saturn, then guides the way to the fine telescopic double star Gamma Arietis, and later passes the Pleiades.
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How to start sky exploring with that new telescope. How to set it up right, other key things to know -- and great cosmic immensities to start finding tonight.
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Astronomers are trying to determine if they've witnessed a complex stellar explosion or a relatively ordinary supernova.
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Waves of recent star formation have made Orion winter's most scintillating constellation. You can see how it all came to be.
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Discovered by amateur astronomers, a mysterious arc of gas might be the ghostly remains of a star shedding its outer layers. However, astronomers haven’t reached a consensus yet.
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We greet the winter solstice. Jupiter nears opposition. Will the two Dog Stars balance for you? And meet the House in the Hyades.
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There could be liquid water trapped under the southern polar cap of Mars. But new observations suggest otherwise.
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Where does the Sun end and the solar wind begin? Scientists have mapped the dynamic magnetic edge that bounds our star.
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NASA is working to restore communications with its MAVEN Mars Orbiter mission.
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Big Jupiter now rises in the east-southeast less than an hour after dark. It's high in sharp telescopic viewing by about 10 p.m.
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Observations from the James Webb Space Telescope suggest the planet might have a nitrogen-and-methane atmosphere — but more data are needed to rule out a bare rock scenario.
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Two winter stars left their mark long ago on wispy gas clouds near the solar system. Their passage might even have influenced life on Earth.
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Astronomers have discovered one of the largest structures in the universe — and the galaxies within it — spinning like a fairground teacup ride.
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