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Astronomy
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Eclipse Hunter Reveals the Science That Can Only Be Done in the Dark
Even in the age of sun-observing satellites, astronomers like Jay Pasachoff still seek out total solar eclipses for the tales they can tell about our sun.
Planet Nine Is Put on Trial in Absentia
Breathless media coverage notwithstanding, the cases for and against a hypothetical Planet Nine in the outskirts of the solar system remain inconclusive.
Latest Black Hole Collision Comes With a Twist
The Advanced Laser Interferometer Gravitational-Wave Observatory’s third detection further compounds the mystery of why black holes collide.
Journey to the Birth of the Solar System
Join David Kaplan on a virtual-reality tour showing how the sun, the Earth and the other planets came to be.
Discoveries Fuel Fight Over Universe’s First Light
A series of observations at the very edge of the universe has reignited a debate over what lifted the primordial cosmic fog.
A Cosmic Burst Repeats, Deepening a Mystery
After a surprise discovery, astrophysicists are racing to understand superenergetic flashes of radio waves that sometimes beep out from distant galaxies.
From Gaia, a Twinkling Treasure Trove
The first star map from the ESA’s Gaia space telescope is poised to revolutionize our understanding of the Milky Way galaxy.
Responding Rapidly to Big Discoveries
How do scientists react to major breaking science news? For astrophysicists after the big gravitational waves announcement, it was meeting for two weeks in Santa Barbara, California.
Colliding Black Holes Tell New Story of Stars
Just months after their discovery, gravitational waves coming from the mergers of black holes are shaking up astrophysics.