Think our planet has some rough neighborhoods? Let’s be real, Earth is basically a luxury spa compared to what’s out there.

Mercury is a cold and desolate planet that appears to have little surface, no sign of water, and little atmosphere that can be observed. Wikimedia Commons A European-Japanese space mission will reach ...

Far smaller and closer to the Sun than it should be, Mercury has long baffled astronomers because it defies much of what we know about planet formation. A new space mission arriving in 2026 might ...

SANTA CRUZ — Xi Zhang, a professor of Earth and planetary science at UC Santa Cruz, has discovered that an exoplanet classed as a “super-Jupiter” has substantial differences from our solar system’s ...

When NASA's Messenger probe finally entered orbit around Mercury, it discovered a world that is still geologically active. From mysterious "hollows" that may be evaporating before our eyes to vast ...

The Phoenix Mercury have one of the best nicknames in sports. It's classical, referring to the Roman god of, among other things, travel, trickery, and luck. It's local, referring to the fact that ...

The inner planets Mercury and Venus will both be visible in the east-southeast sky before sunrise on Tuesday, Nov. 25. When you purchase through links on our site, we may earn an affiliate commission.

In the crowded early Solar System, young planets frequently collided and reshaped each other. But Mercury stood out. It formed unusually close to the Sun. Mercury’s days are longer than its years. It ...

Forbes contributors publish independent expert analyses and insights. An award-winning reporter writing about stargazing and the night sky. A rare six-planet parade will stretch across the sky before ...