NASA’s Messenger Spacecraft Detects a 10-Mile-Thick Layer of Diamonds on Mercury The innermost planet of our solar system, ...

Venus is the hottest planet in the solar system due to its thick carbon dioxide atmosphere, trapping heat as part of a ...

Mercury, the smallest and innermost planet in our solar system, has a number of unusual characteristics that have long puzzled scientists. Despite being only slightly larger than Earth's moon ...

The morning of April 24 will give rise to a striking mini-planetary parade, as Mercury, Venus, Saturn, Neptune, and Earth's ...

Late next year, the joint JAXA/ESA BepiColombo mission will enter orbit around Mercury, as part of its 18-month nominal mission. Tacking the winds that ply the solar system may yet have its day ...

How can we successfully collect and return samples from Mercury and Venus to Earth? This is what a recent study presented at ...

An international team including astronomers from the Center for Astrophysics | Harvard & Smithsonian (CfA) has announced the discovery of a planet about twice the size of Earth orbiting its star ...

At that time, the spacecraft was closer to the star than the solar system's innermost planet Mercury. | Credit: ESA The sun just released a burst of a rare form of helium known as helium-3 (3 He).

NEW YORK (AP) — A new Tatooine-like planet outside the solar system may orbit two failed stars, scientists reported Wednesday ...

Then, on April 25, the crescent moon shines alongside Mercury, Venus and Saturn ... If you'd prefer to gaze beyond our solar system, we've selected the best telescopes for deep space.

Saturn is practically a solar system unto itself ... Cornell University This image of a crescent Mercury was taken by the MESSENGER spacecraft. Right click to download a larger version of this ...

Aside from the moon, Mercury is the fastest-moving planet in the solar system. It retrogrades more than any other planet, which can affect the time it spends in each zodiac sign (typically ...