New observations by the Atacama Large Millimeter/submillimeter Array (ALMA) provide a close look at a galaxy that may be in the process of shutting down its star formation.
Curious about astronomy? No plans for Saturday? Well, you’re in luck! Saturday October 13 is Fall Astronomy Day and your local amateur astronomical community has all sorts of fun things in store for you.
Data from the Gaia satellite reveal 20 new high-speed stars, 13 of which appear to have originated outside of the Milky Way.
Astronomers think they have identified the remnant of a supernova recorded by Chinese astronomers in AD 386.
An increase in cosmic rays indicates that Voyager 2 is approaching the heliopause, where the solar wind gives way to the interstellar medium.
A failure of a gyroscope used to point and stabilize the Hubble telescope caused the observatory to safely shut down while engineers determine a fix.
New calculations reveal what two supermassive black holes about to merge would look like in ultraviolet and X-rays.
The boxy robotic lander MASCOT delivered photos and other data from asteroid Ryugu during a brief 17-hour stay on the asteroid's surface.
Cassini gave an epic final show, going where no space probe had gone before. Here are a few interesting things we learned from that finale.
A lack of dry land on moons such as Europa and Enceladus might make it difficult to seed oceans with phosphorus, an element essential for life as we know it.
Exoplanet Kepler-1625b might harbor a moon the size of Neptune—potentially the first confirmed exomoon—but researchers urge caution.
Future missions to Saturn's moon Titan may have to contend with blowing particles and higher-than-expected winds from recently discovered dust storms.
Astronomers have discovered a object—2015 TG387—that could help in the hunt for a hypothesized Planet Nine in the distant reaches of the solar system.
The hot, tenuous solar corona is visible during a total solar eclipse, and astronomers have long studied the structure and dynamics of the ghostly coronal streamers. Now, a special observing campaign has allowed us to see the corona in unprecedented detail.
In astronomy news this week: Dust storms are seen blowing around Titan for the first time, and new clues from old data suggest that an impact on Mars gave birth to Phobos.
Expanding planetary nebulae, X-rays from supermassive black holes, and stellar community involvement were all on display at the youth awards presented at this year’s Astronomical League convention.
Download this month's astronomy podcast to get "when and where" guidance on finding bright planets, evening constellations, and meteors shed by Halley's Comet.
Two new studies question the cometary nature of 'Oumuamua, our first interstellar visitor, and where in the Galaxy it might have come from.
Much of today’s astronomy happens via methodical searches, but sometimes serendipitous discoveries still surprise us. Such is the case with the transient CGS2004A, a possible supernova recently detected in a galaxy nearly 50 million light-years away.
The Japanese Hayabusa 2 spacecraft dispatched the first of a set of smaller missions that will explore asteroid 162173 Ryugu.
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.
TESS finds its first exoplanet — a super-Earth around bright nearby star Pi Mensae — and astronomers watched an asteroid hide a galaxy to get the details on the asteroid's size, shape, and orbit.
An unexpected pattern in the Milky Way's disk of stars points to a recent whack from another galaxy.
After a 10-day lockdown to cooperate with a criminal investigation, Sunspot Solar Observatory is back to looking at the Sun.
A recent analysis of data from NASA's Dawn spacecraft reveals the role of cryovolcanism past — and likely present — on the giant asteroid Ceres.