Many planetary systems are born in slightly tilted protoplanetary disks, which would explain the misaligned orbits from the ...

Jupiter-like planet 8 UMi b, named Halla, orbits its host red giant star Baekdu closely. The red giant's merger with a white dwarf star questions how Halla could exist. Credit: Space.com | animation ...

This illustration shows an exoplanet orbiting around two brown dwarfs –– objects bigger than gas-giant planets but too small to be proper stars. ESO/M. Kornmesser Astronomers have discovered a ...

Is there a massive undiscovered planet on the outer reaches of the solar system? The idea has been around since before the discovery of Pluto in the 1930s. Labeled as planet X, prominent astronomers ...

The orbits of a seven-planet system discovered in Kepler Space Telescope data has been sonified. Credit: Bishop’s University / Jason Rowe / NASA Ames Research Center ...

A planet circling at a sharp 90-degree angle to the orbits of its two host stars has now been confirmed. This discovery challenges long-standing ideas about how planets form and orbit in the cosmos.

When you buy through links on our articles, Future and its syndication partners may earn a commission. A composite image comparing the relative sizes of our solar system's known dwarf planets, ...

NORFOLK, Va. — This week will bring a celestial parade, full planetary alignment. The alignment will involve Mercury, Venus, Mars, Jupiter, Saturn, Uranus, and Neptune appearing in an arcing line from ...