The Gamma-Ray Moon
A reminder that there is more going on in the universe than we ordinarily perceive
"astronomy"
11,898 Solar Eclipses in 5,000 Years
Precisely when and where eclipses occur is a complicated business
The Death of Astronomy?
Probably not, but forthcoming commercial satellite constellations herald a new era for our night skies
The Birth of Worlds
Stunning new images of young planetary systems create a profound cosmic perspective
An Extremely Large Footprint for an Extremely Large Telescope
A first look at the foundations of a 40-meter-class telescope
SETI, the Next Generation?
Time to bring the search for extraterrestrial technosignatures all the way in from the cold
Exoplanetary Science, Build 2.0
The time is ripe for getting really serious about other worlds, and other life
Twinkle, Twinkle, Satellite Vermin
Is a deliberately shining satellite in the sky a cute idea or a menace?
3 Cosmic Images from 2017: No. 1
One year, so much science. Here's the first of three spectacular, but less widely seen, images from the near and far universe
The Strange, Lumpy World of Asteroids
Radar maps of asteroids reveal an array of gnarled, bumpy, and bizarre objects
Let's Not Forget Tau Ceti
The second-closest, properly sunlike star seems to be at least as interesting as the Alpha Centauri stars
Science in a Moon Shadow
The rare spectacle of a total solar eclipse has given scientists throughout history fleeting opportunities to delve into everything from the sun’s chemistry to Einsteinian relativity to Earth’s place in the solar system...
Exocomets Light Up 100 Billion Kilometers of Space
A remarkable new image reveals the teething pains of an entire planetary system
Planets: A Modest Proposal
When is a planet a planet? Always, whether it's a hecto-planet or a milli-planet
Capturing a Portrait of Humanity's Home
Vibrant images of our planet are common now, but it was only 70 years ago when we first caught a glimpse of Earth from a height of more than 100 miles. Watch a history of photographing Earth, from the first captured German rockets to iconic images like Earthrise and the Pale Blue Dot...
Vast Shadow Sweeps Across Young Exoplanetary System
18 years of Hubble Telescope data on a star system reveals a surprising phenomenon spanning tens of billions of miles
Spawning Stars
An extraordinary new image shows a protostellar disk fragmenting into multiple stars
Fire Burn, and Cauldron Bubble
As All Hallow's Eve approaches, take a look at what's brewing in the cosmic night
Proxima Centauri Just Became Our Gateway to the Cosmos
Astronomers obtain convincing evidence of a potentially habitable world around our nearest neighboring star—this could change everything
3 Cosmic Mysteries--No. 1
What are some of the most intriguing and unexpected puzzles about the universe?
