SUNSET: 
Some Stars Around Galaxy May Be From Elsewhere
Data from the Gaia satellite reveal 20 new high-speed stars, 13 of which appear to have originated outside of the Milky Way.
The Magellanic Clouds Might Once Have Been a Trio
The Milky Way's two largest companion galaxies may have once been a threesome — but new data from the Gaia satellite leaves the satellites' history an open question.
Pattern in Milky Way's Stars Suggests Recent Galactic Whack
An unexpected pattern in the Milky Way's disk of stars points to a recent whack from another galaxy.
Gaia Maps 1.7 Billion Stars, Widens Cosmic Census
With its second data release, the European Space Agency's Gaia satellite has redefined the way we look at our galaxy.
Amateurs Take Huge Panoramic View of the Milky Way — Without a Telescope
This is what the largest available image of the Milky Way using only off-the-shelf photographic equipment looks like.
Supergiant Star Caught Fleeing In Another Galaxy
The discovery of a runaway star in the Small Magellanic Cloud suggests that runaway stars are a common phenomenon in the universe.
Our Galaxy's Center Might Hold Thousands of Black Holes
A new study has uncovered a dozen stellar-mass black holes within 3 light-years of the supermassive black hole at our galaxy’s core — and these might be just the tip of the iceberg.
Dwarf Galaxy Collision Evicted Milky Way Stars
A long-ago encounter between our galaxy and an orbiting dwarf might have ejected some of the Milky Way’s stars.
60-Second Astro News: Exoplanets, Comet 41P & Milky Way Clouds
Citizen scientists have discovered a system of five sub-Neptune planets, NASA scientists follow the spin of Comet 41P, and speedy clouds of gas shed light on the Millky Way's history.
Analog of the Milky Way and the Magellanic Clouds
A hunt for merging dwarf galaxies has yielded an intriguing result: 180 million light-years away, a galaxy very similar to the Milky Way — with two dwarf-galaxy satellites just like our own Magellanic clouds
Seeing the Far Side of the Milky Way
The detection of a star-forming region 66,500 light-years from Earth, on the other side of our galaxy’s center, lends weight to the existence of an extended arm of the Milky Way.
Total Solar Eclipse: All-Sky Maps
Wondering what you'll see during the total solar eclipse on August 21st? Use our all-sky maps to figure it out!
Milky Way May Be Made with Swapped Gas
High-powered simulations suggest that half of the material in the Milky Way could come from other galaxies.
Artificial Neural Network Finds Speeding Stars
Astronomers found six runaway stars when they applied a neural network to data from the European Space Agency’s Gaia mission, which is set to map a billion stars across the Milky Way and beyond.
Exploring the Minispiral at the Milky Way’s Center
The region around Sgr A*, the 4-million-solar-mass black hole at the heart of our galaxy, is a complex and dynamic place. New Atacama Large Millimeter/submillimeter Array (ALMA) observations of the Milky Way’s center now reveal more about this harsh, inhospitable environment.
Watch Milky Way’s Stars Move 5 Million Years into the Future
Astronomers have transformed star data from the Gaia and Hipparcos missions into a video that predicts stellar motions millions of years from now.
Origin of Our Galaxy's Most Distant Stars
The most distant stars discovered in the Milky Way might have been ripped away from a companion galaxy.
New Mass Estimate for the Milky Way
Astronomers have observed the motion of distant star clusters to measure our galaxy’s mass. The new estimate places the Milky Way in the lightweight class of galaxies.
Top 12 Astronomy News Stories of 2016
From the discovery of gravitational waves to the building evidence that a massive planet could exist beyond Pluto, it has been a thrilling year for astronomy research. We recap.
Astronomers Map Milky Way in Incredible Detail
Astronomers have mapped neutral atomic hydrogen, which profuses the space between stars, in unprecedented detail to create a beautiful radio-wavelength portrait of the Milky Way.