Why is the gravitational-wave background — the hum made by supermassive black holes colliding across the universe — stronger than expected?
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Space News & Blog Articles
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The microphone on NASA's Perseverance rover unexpectedly heard tiny claps of thunder from sparks caused by colliding dust grains.
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Saturn remains super-thin-ringed high after dark. The interstellar comet, 11th magnitude, is now nice and high in the dark before dawn. Don't wait; moonlight approaches.
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Observers can't resist the challenge of seeking faint objects with curious names. We go deep and visit two — Andromeda's Parachute and Dracula's Chivito.
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A small space telescope may signal a big new trend for modern astronomy.
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During December you can watch for some impressive shooting stars and spend some time with the “Demon Star,” which can’t decide how bright it wants to be. Bundle up, grab your curiosity, and head outdoors for this month’s fun and informative Sky Tour.
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Astronomers have tuned in to the celestial “songs” of two red giant stars to reveal their hidden histories — including a case of stellar cannibalism.
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Spain’s offer to host the powerful observatory, mired in funding obstacles and local controversies, might promise a new path forward.
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Now that Comet 3I/ATLAS has emerged from the Sun's glare, its behavior is being monitored by every available observatory.
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Uranus is its closest to Earth all year on the night of November 21st, and you can find it easily in the evening sky using Sky & Telescope’s exclusive star chart.
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Saturn's rings are now the closest to edge on that they'll get. The famous interstellar comet has become higher and easier for amateur telescopes before dawn.
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The Pleiades star cluster is part of a much larger complex that stretches across the entire sky, a new study shows.
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Watch an Oort Cloud comet disintegrate before your eyes. Meanwhile, interstellar intruder 3I/ATLAS is brighter than expected.
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By exploring the edge of the solar system, astronomers have estimated how long our star stuck around its siblings after birth.
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With the help of an intervening galaxy cluster, astronomers have found what might be the first generation of stars — but the jury's still out.
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A small but unique mission to Mars is taking an innovative path to reach the Red Planet in late 2027.
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Saturn's rings are turning as edge-on as we will see them for another 15 years. The planet awaits your scope high in the evening sky. Low in the dawn, the thin Moon approaches Venus.
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Last night's aurora painted the sky in reds, greens and even oranges. It's expected to return tonight!
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Saturn's as edgy as it'll get for the next 13 years. With special visual treats in store, here's what to keep eyes on the planet this month.
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Sky & Telescope's Chile tour offered magnificent views of the southern sky, professional observatories, and one of the world’s most remarkable deserts.
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The interstellar comet: Can you see it in your scope? Maybe you can, starting late this week as Comet 3I/ATLAS emerges from behind the Sun. If you have a large […]
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