SUNSET: 
60-Second Astro News: Infant Superclusters and Wavering Gamma Rays
In astronomy news this week: A gargantuan supercluster of galaxies lurks in the early universe, while data from the Fermi telescope hint at two supermassive black holes locked in a gravitational dance.
Some Moons Could Have Moons of Their Own
Four solar system satellites — and one putative exomoon — are big enough and far enough from their home worlds to hold onto tiny moons for billions of years.
Get Ready for International Observe the Moon Night
Fascinated by our Moon? Want to know more about it? Join fellow lunar enthusiasts on Saturday, October 20th, for International Observe the Moon Night!
Low-key supernova marks possible birth of neutron star duo
A massive star lost most of its mass before exploding and creating a neutron star — and a second nearby neutron star might have been the thief.
Observing Earth from the Moon
Ever wondered what it would be like to see the Earth from the Moon? Join Bob King as he explores this from the perspective of the Apollo 17 astronauts.
How to Turn Off a Galaxy’s Star Formation
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.
Meet Deneb, the Bright but Distant Star
Deneb, in the constellation Cygnus, is a star that shines brilliantly despite being one of the farthest you can see with the unaided eye.
Fall Astronomy Day 2018
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.
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.
Blast from the Past in Today’s Sky
Astronomers think they have identified the remnant of a supernova recorded by Chinese astronomers in AD 386.
Voyager 2 Approaches Interstellar Space
An increase in cosmic rays indicates that Voyager 2 is approaching the heliopause, where the solar wind gives way to the interstellar medium.
Hubble Hibernates After Minor Breakdown
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.
Video: The Glow of Spiraling Black Holes
New calculations reveal what two supermassive black holes about to merge would look like in ultraviolet and X-rays.
MASCOT Deploys from Hayabusa-2, Lands on Ryugu
The boxy robotic lander MASCOT delivered photos and other data from asteroid Ryugu during a brief 17-hour stay on the asteroid's surface.
Four Things We Now Know About Saturn
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.
Potential Trouble for Life on Icy Moons
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.
Hubble Boosts Case for Exomoon
Exoplanet Kepler-1625b might harbor a moon the size of Neptune—potentially the first confirmed exomoon—but researchers urge caution.
The Outer Planets Move In, plus an "Old Moon" Observing Challenge
As the bright planets march westward, Uranus and Neptune become the fresh new faces of fall. And if you've never seen an ultra-thin lunar crescent, here's your chance.
Titan Dust Storms Pose Challenges for Future Spacecraft
Future missions to Saturn's moon Titan may have to contend with blowing particles and higher-than-expected winds from recently discovered dust storms.
New Object Found in Far Outer Solar System
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.
