An alien planet orbits a star other than our sun, and is sometimes called an "exoplanet." Learn more about the types of alien planets, including exoplanets and extrasolar planets, and get the latest news.
Hurricanes are causing destruction in the Caribbean Sea, the sun has released several intense solar flares, Cassini is one week away from its death dive into Saturn, and a NASA spacecraft may get very close to a distant solar system object.
Astronomers using the Very Large Telescope in Chile have made the first-ever detection of titanium oxide in an exoplanet's skies. They spotted the substance in the atmosphere of WASP-19b, a "hot Jupiter" located 815 light-years from Earth.
A huge, superhot alien planet likely has a stratrosphere, like Earth does, a new study reports. The find suggests that layered atmospheres may be common traits of worlds around the galaxy, researchers said.