What factors impact how long it takes for a supermassive black hole binary to merge?
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Space News & Blog Articles
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The Moon occults Regulus in twilight or bright afternoon for most of North America. Venus lines up between Aldebaran and the Pleiades. Sirius nears its heliacal setting.
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New observations from the James Webb Space Telescope might have caught the signature of the universe's first stars.
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NASA has announced that the Nancy Grace Roman Space Telescope is all set for a September launch.
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Astronomers have located the edge of the Milky Way’s star-forming disk for the first time, showing that star formation is focused within 40,000 light-years of our galactic center.
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The James Webb Space Telescope has taken a deep look at the rings around the ice giant Uranus and found a new mystery to be solved.
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The Proba 3 mission flies two spacecraft in precise formation to create an artificial eclipse and obtain close views of the solar wind as it leaves the Sun.
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State-of-the-art simulations shed light on how galaxies die — and how we can determine the cause of death.
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The crew of Artemis 2 reported six flashes of light while passing behind the Moon. We've seen those kinds of flashes before.
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The waxing Moon this week visits Venus, the Pleiades, and the Jupiter-Pollux-Castor triangle, then it occults Regulus in a bright sky.
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Watch Regulus disappear and reappear before your eyes during its last North American occultation in the current cycle.
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Sky & Telescope editors made their annual pilgrimage to the Northeast Astronomy Forum to check out new astro-gear and meet up with contributors and readers alike.
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The close pass of Apophis is nothing to fear. Will you be watching on Friday, April 13, 2029, when this asteroid glides across the sky?
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Astronomers have uncovered evidence that two planets collided around a young star, revealing how giant impacts sculpt baby solar systems.
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The Vera C. Rubin Observatory will discover up to 500,000 solar system objects every year. It’s already starting to deliver on that promise.
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A thin crescent Moon points the way to super-difficult Mercury and Mars low in the dawn, then the opposite crescent plays with bold Venus and the Pleiades in evening twilight.
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The weekend of April 11–12 marks the return of the world’s largest astronomy and space expo with telescopes, cameras, and activities for the entire family.
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Scientists have unveiled a new dynamic view of our world at night, showing for the first time a night-by-night view of changes in light pollution.
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The Artemis 2 crew set records and provided amazing views — with more to come — as they journeyed around the Moon.
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A glimpse of a stellar cluster ties generations together.
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Arcturus, the Spring Star, is on its way up in the east. Vega, the Summer Star, rises later in the evening. Jupiter shines high toward the southwest.
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