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.
Setting the stage for the next chapter in the quest to end cosmic loneliness, astronomers released a list of objects they are 90 percent sure are planets orbiting other stars.
This is the third black-hole smashup that astronomers have detected since they started keeping watch on the cosmos back in September 2015.
The Sesame detector will use synchrotron light to study materials ranging from exotic semiconductors to viruses.
Dr. Steigman helped show that most matter in the universe was not made of atoms, a finding that led to modern conceptions of dark matter and dark energy.