Astronomers have discovered a second asteroid in the inner solar system, circling the Sun almost entirely within the orbit of Venus.
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Space News & Blog Articles
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In a surprise to researchers, the small, icy bodies beyond Pluto's orbit tend to rotate opposite the way they move around the Sun, which might say something about how they formed.
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The longest-duration burst of gamma rays on record might mark the moment a black hole tunneled through a star and blew it up from within.
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After checking out the two binocular comets right after dark this week, catch a double shadow transit on Jupiter and the late-night Orionid meteors.
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Circumstances are ideal for watching debris from Halley's Comet set the morning sky ablaze.
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Sky & Telescope’s 2025 “Galileo’s Italy” tour offered much more than sightseeing, as participants enjoyed multiple opportunities to stand on astronomical hallowed ground.
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Precise measurements of stars’ motions show that a wave is propagating outward from our galaxy’s center — perhaps from a long-ago collision with another galaxy.
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Never caught a double shadow transit on Jupiter? This week offers several chances. Meanwhile, Cassiopeia stands high and the Little Dipper leans over.
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Astrophysicist Mansi Manoj Kasliwal, whose work has been key to understanding the changing infrared sky, is guiding Palomar Observatory into its next chapter.
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Astronomers discovered a small, free-floating object that’s accreting matter at a breakneck pace, suggesting that some planet-size worlds could form similar to stars.
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The experience of truly dark skies is one that no one should miss.
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While civil servants are furloughed or working without pay, funding for NASA remains uncertain.
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It's Harvest Moon week, when the Moon shines low and bright at nightfall for many days running. Along the way it passes edge-on Saturn.
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Spacecraft orbiting the Red Planet will aim a suite of instruments at Comet 3I/ATLAS to capture details about this enigmatic object.
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After a dearth of bright comets earlier this year, we look forward to an exciting month ahead.
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Pegasus is a large, distinctive constellation that’s easy to spot. During October, you can use it — along with Saturn — to find some amazing celestial sights in their vicinity. Get all the details lots more stargazing info by downloading this month’s Sky Tour podcast!
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A fight against conventionality has driven cosmologist Stephon Alexander on a groundbreaking journey through theoretical physics.
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The waxing crescent Moon crosses Scorpius on its way to a meetup with Saturn, while the Moon's own sunrise line unveils more and more lunar lands for telescopes.
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VIPER, a water-seeking rover, has gotten a new lease on life, with a new launch vehicle and lander announced by NASA.
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Primordial chemistry might destroy most of the water on sub-Neptunes; if so, there could be far fewer “water worlds” than previously thought.
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A new heliophysics mission seeks to unlock the secrets of the region where the solar wind collides with cosmic radiation.
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