A fight against conventionality has driven cosmologist Stephon Alexander on a groundbreaking journey through theoretical physics.
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Space News & Blog Articles
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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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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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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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A new heliophysics mission seeks to unlock the secrets of the region where the solar wind collides with cosmic radiation.
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The discovery of a rare Einstein Cross — five images of the same galaxy — reveals a trillion-solar-mass dark matter clump.
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An Australian amateur has discovered a binocular nova on the first day of fall, visible to viewers in the Southern Hemisphere.
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In a move that’s concerning astronomers and environmental groups alike, the Federal Communications Commission (FCC) has proposed reducing environmental oversight of space-based operations.
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On these dark evenings the Perseus Double Cluster and the Andromeda Galaxy, M31, await in the northeast. They're only two fist-widths apart.
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Astronomers using the James Webb Space Telescope have confirmed that, just 800 million years after the Big Bang, there is a galaxy that contains a supermassive black hole — and not much else.
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Titan joins its shadow for a "grand finale" this October.
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A surge of asteroids might have peppered the inner solar system some 800 million years ago, in a short-lived shower that left its mark — literally — on Earth and its neighbors.
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Whether you end up catching a falling star or not, meteor shower vigils offer time with the stars.
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New observations reveal turbulent flows in the supernova remnant Cassiopeia A and in the solar corona.
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The number of gravitational-wave signals has just doubled with the release of the newest catalog of events.
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Reflect Orbital plans to launch gigantic satellites to reflect sunlight into regions where night has already fallen, potentially harming eyes, altering sleep, and blocking the starry sky.
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S&T editors attended star parties in the past months in various locations around the country to observe with fellow stargazers.
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The Perseverance has found compounds associated with life on Earth. But whether they indicate life on Mars awaits sample return.
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Venus has double close conjunctions with the crescent Moon and Regulus in the dawn next Friday the 19th. Meanwhile, Saturn and Neptune are coming to opposition.
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See the images that won the 2025 Astronomy Photographer of the Year award.
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The LIGO gravitational-wave detector celebrates its 10th birthday with the clearest signal yet from a pair of merging black holes.
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