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.
In 1919, British astronomers photographed a solar eclipse and proved that light bends around our sun — affirming Einstein’s theory of general relativity.
The Thirty Meter Telescope, which would be the largest in the Northern Hemisphere, could survey black holes and planets orbiting distant stars, but opponents say it would desecrate a sacred mountain.
Physicists monitoring the Large Hadron Collider are seeking clues to a theory that will answer deeper questions about the cosmos. But the silence from the frontier has been ominous.