SUNSET: 
Wobbly Star Reveals the Closest Black Hole Yet
The most compelling dormant stellar-mass black hole candidate in the Milky Way orbits a Sun-like star only 1,570 light-years away.
Breadcrumbs Lead to Baby Planet
New radio images reveal evidence for a planet forming around the Sun-like star LkCa 15.
Photos Show Drama of DART Asteroid Impact (Updated)
The DART impact into asteroid moon Dimorphos wowed astronomers with an unexpectedly dramatic plume.
NASA's DART Mission Successfully Impacts Asteroid
NASA's DART mission will impact the asteroidal moon Didymos on Monday. Here's how to watch and what we'll learn.
New Observations Add Fuel to Fast Radio Burst Origin Debate
A peculiar repeating fast radio burst seems to be coming from a dynamic environment in an otherwise uninteresting region, leaving researchers scratching their heads as to the burst’s origin.
Neptune's Rings, Jupiter's “Frosted Cupcakes,” and 3D Views of Mars
Three solar system emissaries have returned beautiful and even interactive vistas of Neptune, Jupiter, and Mars.
This Week's Sky at a Glance, September 23 – October 1
Cygnus and the Milky Way cross the zenith after the end of twilight. Saturn, Jupiter, and Mars await your scope through the night. A thin crescent Moon poses favorably at dawn — because it's cupped.
Hotspot Zooms Around Our Galaxy’s Black Hole
Astronomers have detected a bubble of hot gas circling our galaxy’s central black hole soon after seeing a flare, suggesting both arose from the same process.
Jupiter's Exceptionally Close Opposition
A sentinel in the autumnal sky, Jupiter marks its closest opposition since 1963.
Webb's Exoplanet Data Are Almost Too Good
A new study urges caution in interpreting the chemical fingerprints that Webb is collecting of alien worlds.
Astrophotographer of the Year Awards
The Royal Observatory Greenwich has announced the winners of the 14th annual Astronomy Photographer of the Year contest.
Perseverance Finds Ancient Habitable Conditions on Mars
The mission team has reported results from Perseverance's study of the rocks deposited by the river that once flowed into Jezero Crater.
This Week's Sky at a Glance, September 16 – 24
The late-night Moon aligns with Mars and Aldebaran. Delta Cephei pulses on high. And constellations all over the sky signal the change from summer to fall.
Lost Moon Could Solve Saturn’s Riddles
An icy moon torn apart in Saturn's gravitational field some 150 million years ago could explain why the planet's rings are so young and a host of other puzzles.
Webb's Dazzling Views of the Orion Nebula
The James Webb Space Telescope has provided its first views of the Orion Nebula, revealing infant stars and the filaments that feed them.
Blazar's Outburst Hid Repeating Signal
Pulses originating almost a billion light-years away hint at extreme physics near a supermassive black hole.
Photographers "Capture the Dark" in Stunning Images
The International Dark-Sky Association celebrates photography's role in the fight against light pollution. Here are this year's contest winners!
Webb Captures an Exoplanet, a Brown Dwarf — and a Giant Tarantula
New Webb images reveal the space telescope's first exoplanet, first brown dwarf, and a stellar nursery teeming with activity.
This Week's Sky at a Glance, September 9 – 17
As the Moon wanes from full to last quarter, passing Jupiter and Mars along the way, darkness returns to the evening sky for constellation spotters and deep-sly observers.
The Hazards of Uncontrolled Reentries from Space
A recent study examines the risk posed to human life by reentering space debris as the number of rocket launches continues to grow.
