Massive clusters of galaxies, some with more mass than a hundred Milky Way galaxies, have…
NASA’s Spitzer Space Telescope has revealed that some of the universe’s earliest galaxies were brighter…
For the first time, NASA’s Mars Odyssey orbiter has caught the Martian moon Phobos during…
A new relative of the Tyrannosaurus rex – much smaller than the huge, ferocious dinosaur…
Blue supergiants are rock ‘n’ roll: they live fast and die young. This makes them…
The Smithsonian today made available a new online interactive that allows users to explore a…
Frogs already knew it wasn’t easy being green, but the going just got a lot…
The Double Asteroid Redirection Test (DART) – NASA’s first mission to demonstrate a planetary defense…
Dotted across the sky in the constellation of Pictor (The Painter’s Easel) is the galaxy…
Why do our eyes tend to be drawn more to some shapes, colors, and silhouettes…
Few of the universe’s residents are as iconic as the spiral galaxy. These limelight-hogging celestial…
Astronomers have put together the largest and most comprehensive “history book” of galaxies into one…
Sperm start their sprint to the ovum when they detect changes in the environment through…
X-ray observations have found copious amounts of very hot gas in galaxy clusters, and in…
Observers watching January’s total eclipse of the Moon saw a rare event, a short-lived flash…
The study of a tiny grain of stardust — older than our solar system —…
Small stellar systems like dwarf galaxies are suggested to be the main building blocks of…
For more than a century, scientists have squabbled over how the Earth’s moon formed. But…