The Proba-3 spacecraft succeed at creating solar eclipses, kicking off a two-year mission to study the sun’s mysterious outer atmosphere, the corona.
At 300 light-years away, the interstellar cloud is the closest of its kind ever found to Earth and the largest apparent single structure in the sky.
Hubble is still going strong 35 years after it was launched into space. Celebrate its anniversary with some out-of-this-world images.
A blob of gas seen outside the Milky Way could be a type of starless, dark matter–dominated galaxy. Some scientists are skeptical.
Astronomers have a lot of thoughts about the latest paper claiming we’ve found the strongest hints of alien life yet on the distant planet K2 18b.
The Curiosity rover identified hidden caches of the mineral siderite, which could help explain why Mars lost its habitable climate.
Astronomers now agree: They’ve spotted the first isolated stellar-mass black hole ever seen.
Decades of constant X-ray emission from the Helix Nebula’s white dwarf suggest debris from a Jupiter-sized planet steadily rains upon the star.
Last year, astronomers announced that a planet orbits Barnard’s star. Now, researchers have confirmed the existence of three more.
Cosmic microwave background data support cosmology’s standard model but retain a mystery about the universe’s expansion rate.
