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Technosignatures - signs of an advanced alien civilization - in the form of solar panels may be difficult to detect, a new study says.
Astronomers using the MeerKAT radio telescope in South Africa have observed a neutron-star jet with an S shape for the first time.
Astronomers say that the giant stinky exoplanet HD 189733 b smells so bad - like rotten eggs - thanks to hydrogen sulfide in its atmosphere.
The Coathanger cluster resembles its namesake and is easy to spot with binoculars, using the star Albireo - part of the Summer Triangle - to find it.
Saturn's largest moon Titan has seas and lakes of liquid methane/ethane. A new study from MIT suggests the shorelines of Titan's seas are shaped by waves.
Elephants are highly intelligent and social animals. And now, a new study shows that elephants use names when communicating with each other, just like humans.
For the 1st time, astronomers say they have detected a glory on an exoplanet. Glories are a natural phenomenon, but until now seen only on Earth and Venus.
NASA's Hubble Space Telescope has found older and less massive brown dwarfs tend to be alone with no companions, unlike younger and larger brown dwarfs.
Researchers at UCLA have found an exoplanet with a tail. The hot Jupiter WASP-69b has a huge comet-like tail of gas 350,000 miles (560,000 km) long.
Lenticular clouds look like UFOs. See photos of lenticular clouds in various parts of the world, from the EarthSky community.
Kelvin-Helmholtz clouds - aka fluctus clouds - can sometimes look like ocean waves. Check out these photos of them!
New data shows galaxies like our Milky Way might have been 10 times more common in the early universe than previously believed.
A recent computer model predicts a new Earthlike planet that lies hidden in the outermost solar system. Will we search for it? Will we find it?
The constellation Cepheus the King is visible from the Northern Hemisphere every night of the year due to its close location to Polaris, the North Star.
Have we been geoengineering accidentally for decades? Hank Green thinks so. Now he points to sulfur dioxide as a possible road to (temporary) cooling.
Astronomers using the Keck II telescope in Hawaii have obtained new direct images of a young exoplanet 3 times the mass of Jupiter and 87.5 light-years away.
Astronomers have released a bizarre new image of a supernova. Gravitational lensing from a galaxy in the foreground causes the single supernova to look like 4.
New findings from NASA's Webb Space Telescope show that rocky exoplanet TRAPPIST-1 c is not Venus-like as theorized and only has a very thin atmosphere at best.
Researchers in France say that the moon's inner core is solid, with a density close to that of iron, solving a long-standing debate about the heart of the moon.
A new study suggests oceans for 4 Uranus' moons. If true, they'd join a growing number of ocean worlds in the outer part of our solar system.