Meet the author: Dr. Phil Plait is an astronomer, author, and science communicator with a PhD in astronomy at the University of Virginia. He has written four books on astronomy and consulted on space ...

"What surprised us, at the end, was how effective this type of impact could be in explaining Mercury's unusual structure ...

Turns out, it's as tough to drop inward into the inner solar system, as it is to head outward. The problem stems from losing ...

Future missions to Venus could also supply additional data on the density and temperature of the planet's crust, which could ...

It was a beautiful summer evening in Western Colorado. The Sun had just set and our bright sister planet was just starting to ...

This April, the skies put on a dazzling show – watch planets like Jupiter, Venus, and Mars glide across morning and evening ...

Also in the morning sky is little Mercury, but traditionally ... Conversely, when Venus is near its closest point to the Earth, its disk appears six times larger, but it appears as only a hairline ...

In the coming days ahead, if any of your friends or relatives remark to you that they saw a "strange UFO" on the way to work ...

The planets offer exciting views in April for both night owls and early risers. Plus, the Lyrid meteor shower peaks in ...

The constellations Taurus, Orion, Canis Major, and Gemini grab attention this month, while Mars, Jupiter, and Venus dominate the planetary scene.

The annual Lyrids meteor shower will appear in April after this month's "pink" full moon. Later this month, the crescent moon will be visible near Venus, Saturn and Mercury. The only full moon visible ...

April, the month co-hosted by dynamic, go-getter fire sign Aries and luxury-loving, slow and steady earth sign Taurus, can’t ...