Mercury

The triple conjunction event involves Saturn, Venus, and a crescent moon.

Look to the eastern sky late Thursday, and a clear horizon will show you this unusual, grinning planet alignment.

"What surprised us, at the end, was how effective this type of impact could be in explaining Mercury's unusual structure without needing to consider multiple collisions or extremely rare conditions."

NASA's James Webb Space Telescope provided a closer look at the aftermath of a star that wreaked violence on its planet

As Venus approaches its inferior conjunction, astrophotographers have snapped some striking shots of the crescent planet looking like a giant rainbow in space.

Four small, newly discovered worlds are less than six light-years away from Earth, and their discovery reinforces a cautionary tale from planet hunting's prehistory

A meteorite discovered in north-west Africa in 2023 didn't come from a large asteroid or any of the known planets of the solar system – but it might have formed on a planet that was destroyed long ago

Researchers in Australia have discovered a new record holder for the oldest impact crater on Earth yet known. The impact dates back some 3.5 billion years. The post New record for oldest impact crater on Earth first appeared on EarthSky.

The planet parade afterparty rages on, particularly for Mercury and Venus.

A stunning "parade of planets" will grace the night sky this week, with all seven of Earth's celestial neighbors joining the show. Here's how to spot it and why it happens.

At extremely close distances to their stars, even rocky planets can be completely disintegrated. We've just caught our first one in action. For planets, just like in real estate, the most important…

A French astrophotographer has captured a stunning photo of Venus and the moon shining above the Eiffel Tower in Paris, thanks to a rare "parade of planets."

Cloaked in an ambiguous pseudonym, Stone was one of the first women to write science fiction for the pulps.

The climate on such a world must be beyond bizarre.

Mars, Venus, Jupiter and Saturn should be visible to the naked eye, but get a telescope and you can spot Neptune and Uranus.

A new study suggests that the explosive deaths of the universe's earliest stars created surprising quantities of water that may have sparked extraterrestrial life in the very first galaxies.

The BepiColombo mission recently made its sixth flyby of Mercury, snapping some images along the way.

A joint Japanese-European mission to Mercury just made its sixth flyby of the planet, revealing stunning close-ups of the permanently shadowed craters at Mercury's north pole.

The spacecraft is nearing the least explored planet in the inner solar system.

This moon phase is nicknamed the Wolf Moon, which is rooted in Native American culture.