WASP-121b, an already unusual planet, might have a remote origin that explains some of its peculiar properties—from iron rain ...

There's a broad consensus in the scientific community that a follow-up mission to Pluto should be an orbiter, and not a ...

The newfound exoplanet, called Kepler-139f, is a gigantic world roughly twice the mass of Neptune and 35 times the mass of ...

In new research, University of California, Irvine astronomers describe how more than 200 known exoplanets are likely much ...

Five planets are retrograde in summer 2025: Pluto, Neptune, Saturn, Mercury and Uranus. Astrologically, that means in for a ...

The planet Neptune has a large dark spot "with an unexpected smaller bright spot adjacent to it," inveru observations using ...

Scientists have found that Uranus is emitting its own internal heat — even more than it receives from sunlight — and this ...

A new study led by University of Houston researchers, in collaboration with planetary scientists worldwide, suggests Uranus ...

Several planets stand still in the sky, Titan’s shadow transits Saturn, and Venus gives Taurus a second eye in the sky this ...

Before defining what a light-year is, we should define what a light-year is not: It is not a measure of time, but rather a ...

For many of us, the idea of a solar system with just eight planets is a fundamental concept in science. However, since Pluto was reclassified as a dwarf planet in 2006, Neptune has stood as the last ...

Sotheby's is putting some rare items up for auction, including what it calls the largest piece of Mars ever found on Earth.