Mercury, the closest planet to the Sun, is a world of extremes and unanswered questions. Though it resembles the Moon with its cratered surface, Mercury is far from ordinary. It’s the smallest planet ...

SYFY ’s The Ark follows the crew of an interstellar spacecraft on a multi-light-year journey to the star next door. In the ...

Mercury is the closest planet to the sun, followed by Venus, Earth, Mars, Jupiter, Saturn, Uranus and Neptune.

Newly released imagery from NASA shows the Sun's corona in stunning detail after the Parker Solar probe performed its closest ...

Proxima Centauri, just 4.24 light-years from Earth, is the closest known star to our Sun. Though it’s the smallest member of ...

Mercury is a mysterious world. As the closest planet to the sun, it’s a hard-to-reach destination for space missions. So far, only two have made it to Mercury—NASA’s Mariner 10 and MESSENGER ...

Have you ever wondered how long it would take to travel to each of the planets in our solar system? The distances between ...

The universe beyond our Solar System is vast and filled with mysteries, and some of its most fascinating secrets lie just beyond our cosmic doorstep. While the Sun is the closest star to Earth, it's ...

"It is possible that a planet once existed in the solar system but was later ejected, causing the unusual orbits we see today ...

On July 3, 2025, at 3:54 pm ET, the Earth will officially reach its furthest point from the Sun for this year. This is called aphelion. Our planet’s orbit is very close to a circle, but it is not a ...

Mercury, the closest planet to the Sun (and all the other planets), will not make the show in its current position behind the Sun, while you won't see the eighth planet because you're standing on ...