Black holes or neutron stars behaving wildly are the likely suspects of a repetitious burst of cosmic energy 3 billion light years away, astronomers say.
Astronomers have their noses pressed against the windows of the unknown, wanting to believe in life elsewhere just like many outer space enthusiasts.
Astronomers offer new details about Oumuamua, a probable asteroid arriving from beyond the solar system and leaving in a big hurry.
Seen and heard, the fireball is a stunning breakthrough into kilonovas, bursts of energy believed to produce metals like gold and uranium in the universe.
Rainer Weiss of M.I.T. and his Caltech collaborators Kip Thorne and Barry Barish discovered ripples in space-time known as gravitational waves.
Virgo, a new detector for gravitational waves, joined the L-shaped antennas seeking space-time reverberations from colliding black holes.
Just ahead of the 60th anniversary of the first Earth launch of a satellite, an auction house will take bids on a replica of the shiny Soviet spacecraft.
Launched in 1997, the Cassini-Huygens mission has reshaped scientific understanding of the solar system’s most exotic planet and its mysterious moons.
Launched 40 years ago, the spacecraft have sailed beyond the solar system, artifacts of a civilization that may be gone before they’re found.
A total solar eclipse brings tears, screams, even reverence to those in its path.