This young exoplanet challenges planet formation theories
New observations reveal a young exoplanet, orbiting a young star in the Hyades cluster, that is unusually dense for its size and age.
Weighing in...
Scientists take the ultimate Earth selfie
Consider it Earth's ultimate mirror selfie.
In a new study, a team led by astrophysicist Allison Youngblood at the University of Colorado Boulder set out...
Ammonia sparks unexpected, exotic lightning on Jupiter
NASA's Juno spacecraft - orbiting and closely observing the planet Jupiter - has unexpectedly discovered lightning in the planet's upper atmosphere, according to a...
Scientists discover a Saturn-sized planet orbiting small, cool star
Using the supersharp radio “vision” of the continent-wide Very Long Baseline Array (VLBA), astronomers have discovered a Saturn-sized planet closely orbiting a small, cool...
Early Martian landscape probably looked like this image of Devon ice cap
Early Mars was covered in ice sheets, not flowing rivers.
Many valley networks scarring Mars's surface were carved by water melting beneath glacial ice, not...
Surprising number of exoplanets could host life, says new study
Our solar system has one habitable planet -- Earth.
A new study shows other stars could have as many as seven Earth-like planets in the...
Astronomers find possible sign of neutron star in supernova 1987A
Two teams of astronomers have made a compelling case in the 33-year-old mystery surrounding Supernova 1987A.
Based on observations of the Atacama Large Millimeter/submillimeter Array...
Scientists find the remnant of an ancient globular cluster
Scientists discovered a stellar stream composed of the remnants of an ancient globular cluster that was torn apart by the Milky Way's gravity 2...
Astronomers pinpoint the best place on Earth for a telescope
Dome A, the highest ice dome on the Antarctic Plateau, could offer the clearest view on Earth of the stars at night, according to...
Sunlight plunge may have triggered ‘snowball earths’
At least twice in Earth's history, nearly the entire planet was encased in a sheet of snow and ice.
These dramatic "Snowball Earth" events occurred...