Astronomy

Scientists have struggled to accurately forecast the strength of the sun’s 11-year cycle — even after centuries of solar observations.

Astronomers are scouring the cosmos for fingerprints of the invisible — tiny clumps of pure dark matter that might solve a long-standing cosmic mystery.

In their jiggles and shakes, red giant stars encode a record of the magnetic fields near their cores.

Giant black holes were supposed to be bit players in the early cosmic story. But recent James Webb Space Telescope observations are finding an unexpected abundance of the beasts.

New observations of a faraway rocky world that might have its own magnetic field could help astronomers understand the seemingly haphazard magnetic fields swaddling our solar system’s planets.

By measuring the universe’s emptiest spaces, scientists can study how matter clumps together and how fast it flies apart.

Astronomers have found a background din of exceptionally long-wavelength gravitational waves pervading the cosmos.

For the first time, mathematicians have proved that planetary orbits in a solar system will always be unstable.

There once was a cosmic seed that sprouted the Milky Way galaxy. Astronomers have discovered its last surviving remnants.