Astronomers have identified a strange new kind of exoplanet that challenges how scientists classify worlds beyond our Solar System. The planet, L 98-59 d, appears to contain a vast ocean of molten ...

Like tiny photobombers, cosmic anomalies resembling small, bright red points show up in almost every snapshot taken by the ...

Astronomers may have found an exciting new clue about dark energy—the mysterious force driving the universe’s accelerating expansion. They discovered an extraordinarily bright supernova from more than ...

The local universe may be expanding more slowly than previously thought, a discovery that could relieve a pesky discrepancy ...

Hubble Space Telescope imagery Neptune has revealed that the planet's clouds are disappearing. Credit: NASA Goddard Space ...

Astronauts on board China's space station plucked a "bumper crop" of "space tomatoes" from vines that were grown inside a ...

Despite years of debate and follow-up studies, an odd streak of cosmic light still defies a final explanation. Is it a giant ...

A recently detected flash of energy appears to have emanated from the wreckage of colliding galaxies, according to an international team of astronomers led by Penn State scientists. The burst, known ...

Two of the world’s most powerful space telescopes have joined forces to produce a stunning new image of the Cat’s Eye Nebula, one of the most visually complex objects in the known universe. The ...

The space-based telescopes Hubble and Euclid combined forces to capture the vibrant remains of a dying star in stunning new ...

New images from the NASA/ESA Hubble Space Telescope and ESA’s Euclid mission have revealed the complex, multi-shell structure ...