SUNSET: 
Newfound Stellar Companion May Explain Black Hole System
Astronomers have identified a distant stellar tagalong to the binary system V404 Cygni.
This Week's Sky at a Glance, November 1 – 10
The thin crescent Moon pairs beautifully with Venus low in Monday's twilight. And be on the lookout for any Taurid fireballs this week!
November Podcast: Cassiopeia & Company
November’s night skies feature a cluster of prominent constellations led by a celestial queen. Our guided audio tour tells you how to identify them, along with tips for spotting all five bright planets and three meteor showers.
Meet Algol, the Demon Star
Meet Algol, a "winking" eclipsing binary star that glares out from the constellation Perseus.
NASA Announces Potential Sites for Artemis 3 Mission to the Moon
NASA has chosen nine potential landing sites near the Moon’s south pole for Artemis 3’s crewed lunar landing.
Find a Quasar in the Sky Tonight and Time Travel to the Early Universe
Travel to the faraway and long ago by riding a quasar's beam.
Searching Five Million Stars for Disks, Debris, and Dyson Spheres
Stars with more infrared emission than expected might host planet-forming disks, rubble from planetary collisions, or maybe even signs of technologically advanced civilizations.
Black Hole Eats One Star, the Remains Pummel a Second One
The crumbs of a supermassive black hole’s stellar meal has revealed the presence of a second star in a close orbit.
There Won't Be a Second Bright Comet This Month (Update)
Newfound Comet ATLAS (C/2024 S1) could dazzle – or fizzle.
This Week's Sky at a Glance, October 25 – November 3
Fading Comet Tsuchinshan-ATLAS poses high in a moonless sky for its fans with binoculars and telescopes, even as we wave farewell for at least a hundred thousand years, maybe forever. Meanwhile four brighter, more permanent members of the solar system await attention.
New Coronagraph Is Observing the Sun
A new coronagraph mission is now orbiting Earth on a mission to provide direct observations of the Sun for space-weather forecasts.
Grab Comet Tsuchinshan-ATLAS by the Tail
We check in with the brightest comet of the year and see what's next, plus an update on Comet ATLAS (C/2024 S1), which still shows signs of life.
Gliese 229 B’s Newfound Companion Solves Brown Dwarf Mystery
A 1995 Hubble Space Telescope image of the brown dwarf Gliese 229 B next to its far brighter host star, the M dwarf Gliese 229 A. S. Kulkarni (Caltech), D.Golimowski (JHU) and NASA Astronomers recently discovered a companion to Gliese 229 B, the first confidently identified brown dwarf. This discovery…
We’ve Found the Source of Most Meteorites
Scientists have traced 70% of meteorite falls to three collisions that occurred in the asteroid belt within the past 40 million years.
This Week's Sky at a Glance, October 18 – 27
Comet Tsuchinshan-ATLAS fades and shrinks as it rises high into a darker sky. Venus passes Antares. The waning Moon passes the Pleiades, Jupiter, and Mars. Arcturus becomes the Ghost of Summer Suns.
Are Objects from Alpha Centauri Streaming by Earth?
New calculations show that material ejected from the Alpha Centauri system could be streaming by Earth — but will we know it when we see it?
The Sun's Activity Is Reaching a Fever Pitch
The Sun is approaching the peak of this solar cycle, which means a higher chance of sunspots, flares, and aurora.
Comet Tsuchinshan-ATLAS Climbs, Brightens and Delights!
Treat yourself to a comet bright enough to see plainly even in moonlight. Tsuchinshan-ATLAS beckons at dusk!
Diana Hannikainen Named Next Editor in Chief of Sky & Telescope Magazine
Astronomer and science communicator Diana Hannikainen has been named the next Editor in Chief of Sky & Telescope.
Europa Clipper Successfully Launches on Multi-Year Mission to Jupiter’s Icy Moon
After reaching Jupiter in 2030, the spacecraft will study Europa to help assess whether it has the conditions necessary to sustain life.
