SUNSET: 
Superluminous Supernova, Explained?
Some brilliant explosions at least 10 times more powerful than regular supernovae might come from a white dwarf merging with a massive companion star. But not everyone agrees on that explanation.
See Ancient “North Stars" Eclipse Each Other
The ancient pole star known as Thuban turns out to be an eclipsing binary. If you're up for a challenge, you can see the eclipses for yourself.
New Mysterious Radio Flash Pinned Down; Hundreds More Being Discovered
Recent observations have pinpointed the location of a fifth fast radio burst, shedding light on the environs that create these powerful sources.
NASA's TESS Introduces Us to Our Planetary Neighbors
NASA's TESS mission announces the results from its first year of exoplanet-hunting in the southern sky, introducing us to some of our planetary neighbors.
Gravitational Waves from Second Neutron-star Collision Observed
Scientists with the Laser Interferometer Gravitational-wave Observatory (LIGO) and Virgo collaborations have announced the detection of a second pair of neutron stars that went bump in the night.
Top 10 Astronomy News Stories of 2019
Our pick for the biggest astronomy news story of the year is the first-ever image of a black hole “shadow.” What's yours?
How Young Galaxies Grow
A pair of recent studies sheds light on some of the universe’s earliest galaxies and how they grow.
Hubble Images Comet Borisov at Perihelion
The Hubble Space Telescope imaged the interstellar comet 2I/Borisov when it came closest to the Sun before heading back out of the solar system.
New Cyclone Joins Jupiter’s South Pole Club
Stunning new images from NASA’s Juno mission reveal that a new cyclone has budged its way into the grouping at Jupiter’s south pole.
How Saturn's Moon Got Its Stripes
Astronomers have struggled to understand the origin of the parallel fractures on Saturn’s icy moon Enceladus, known as “tiger stripes,” from which water-ice spews into space. Now, a single explanation ties all the pieces together.
The Starlink Situation
Shots of the Starlink satellite train crossing the heavens are dramatic — even shocking — but they’re also a bit misleading. The real problems that Starlink and other megaconstellation satellites pose are more insidious.
Three Black Holes May Merge in Nearby Galaxy
New observations of a galactic crash site show that there are not just two but three supermassive black holes on the verge of union. Two of them are only 650 light-years apart, the closest pair known.
Astronomers See Extreme Photons from Collapsing Massive Stars
Astronomers have detected a long-sought signal from gamma-ray bursts — the highest-energy photons ever seen from these events.
First Global Geological Map of Saturn’s Moon Titan Released
Working with data from NASA’s Cassini mission, scientists have produced the first global map of Titan’s geological features.
Observations Confirm Lensing Planet Discovered by Amateur
Follow-up observations of an amateur-discovered exoplanet show that the planet orbits its star at the snow line, where ice giants may form.
Astronomers Image Winds from Faraway Galaxy
Astronomers have directly observed a supernova-driven wind as it's rushing out of a galaxy and far into intergalactic space.
Interstellar Space: The View from Voyager 2
Voyager 2 crossed into interstellar space a year ago. Now, five teams of astronomers have analyzed the data it returned to paint a picture of the outer boundary of the solar system.
Dark Energy Survey Sees First Light
The Dark Energy Spectroscopic Instrument is poised to record millions of galaxies as far back as 11 billion years ago to unveil the nature of dark energy.
First Light for German X-ray Telescope EROSITA
The EROSITA X-ray telescope aboard the German-Russian Spektr-RG satellite has taken its first images of the hot universe.
Help Name Saturn’s 20 Newfound Moons
Astronomers have found 20 new moons circling Saturn — now you can help name them!
