The orbit Venus takes around the sun periodically results in a phenomenon astronomers refer to as an inferior conjunction, which occurs when the planet ... Earth, but will instead be slightly ...

A rare celestial event on Feb. 28 will offer skywatchers the chance to witness a "planet parade" of all seven planets in our solar system outside of Earth ... above the horizon as the sun is ...

Something where 4K isn't just nice to have, it's essential — transforming a merely dazzling experience into an ecstatic one. Enter Planet Earth II, the insanely beautiful nature series narrated ...

That same cloud gave rise to our entire solar system, including our star, the sun. Keep reading to learn more about Earth's different layers, its atmosphere, and what makes the "blue planet" unique.

"The glare from the sun makes it really, really difficult to see," said Michelle Nichols with Chicago's Adler Planetarium. Since Venus and Mercury are "inferior" planets compared with the Earth ...