Proxima Centauri is the dimmest and smallest of the Alpha Centauri system, but it has the honor of being the nearest star.
While the Jupiter-Saturn-Venus line keeps shrinking, all kinds of deep-sky sights, naked-eye to telescopic, show themselves on these moonless evenings.
The post This Week's Sky at a Glance, November 25 – December 4 appeared first on Sky & Telescope.
The first-ever planetary defense mission is now on its way to the asteroid Didymos and its moon, Dimorphos.
The post NASA’s DART Mission Launches for Head-on Collision with an Asteroid appeared first on Sky & Telescope.
The Solar Orbiter mission will fly past Earth Friday night, setting up a dramatic sunward plunge.
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Astronomers have observed an object like ‘Oumuamua — but unlike the first known interstellar visitor, this one is in the solar system.
The post Can This Near-Earth Asteroid Help Us Understand the First Interstellar Visitor? appeared first on Sky & Telescope.
Astronomers might have spotted a stellar-mass black hole in another galaxy — but not everyone agrees with what they found.
The post Did Astronomers Spot a Black Hole in Another Galaxy? Maybe Not appeared first on Sky & Telescope.
Orion now rises in the east around 8 p.m. Will Betelgeuse or Rigel be the first of his bright stars to come up? That depends on your latitude; Los Angeles and Atlanta are balance points. The Pleiades and Aldebaran watch this scene from high above.
A Russian missile struck a defunct satellite early Monday morning, forcing International Space Station crew to shelter in place.
The post Russia Conducts Antisatellite Test; Space Station Crew Takes Cover appeared first on Sky & Telescope.
A quasi-satellite of Earth, named Kamoʻoalewa, might actually be a chip off our Moon.
The post Has a Stray Piece of the Moon Become a Quasi-satellite of Earth? appeared first on Sky & Telescope.
Huge chunks and twisted slabs of dark glass are strewn across a patch of the Chilean Atacama Desert. Do they have a cosmic origin?
The post Did a Comet Explode Over South America 12,000 Years Ago? appeared first on Sky & Telescope.
Concerned about light pollution? Join a virtual conference this weekend that looks at ongoing global efforts to mitigate it.
The post Under One Sky: Let's Address Light Pollution Together appeared first on Sky & Telescope.
The moonless evenings this week offer three bright planets and deep-sky riches as deep as you can go. Meanwhile, the waning crescent Moon meets Mercury and Spica low in bright dawn.
The post This Week's Sky at a Glance, October 29 – November 6 appeared first on Sky & Telescope.
Human-made interference, not extraterrestrial technology, is responsible for the first candidate "signal of interest" detected by the project Breakthrough Listen.
The post The True Nature of the Candidate ET Signal From Proxima Centauri appeared first on Sky & Telescope.