In 1970, scientists were hoping to learn why the sun’s corona is so hot during an eclipse. Fifty years later, the corona’s magnetic field may hold some answers.
After ferociously producing stars for a few hundred million years, this galaxy in the early universe gave up, and astronomers aren’t sure why.
ESA's Solar Orbiter is now on its way to the sun, beginning a nearly two-year journey.
Brief blasts of radio energy from other galaxies keep stumping astronomers, but one seems to be on a 16-day cycle, a new clue in an ongoing puzzle.
Astronomers have found a pulsar’s orbit being rocked to and fro as a neighboring white dwarf whips up spacetime, in accordance with general relativity.
For more than 16 years, the Spitzer Space Telescope has witnessed the births and deaths of stars, charted the Milky Way, found faraway worlds and more.
Astrochemists map phosphorus-bearing molecules in a star-forming cloud, giving clues to how this vital element may have arrived on Earth.
The star closest to the sun may harbor another planet, this one much more massive and colder than Earth.
Tiny grains of stardust that formed long before our solar system are giving new insight into star formation in the Milky Way.
A new effort to study the cosmos is named after Vera Rubin, an astronomer who searched out dark matter and battled sexism.