Mercury's mysterious makeup may be the result of a grazing "hit and run" collision between two similar-sized protoplanets in the early solar system, a new study suggests. Mercury, the smallest and ...

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 ...

For the study, the researchers discussed the pros and cons of obtaining samples from Mercury and Venus, specifically mentioning the absence of meteorites that originate from the inner solar system, as ...

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

An international team including astronomers from the Center for Astrophysics | Harvard & Smithsonian (CfA) has announced the ...

The internet has been abuzz with the possibility of sky watchers seeing a “smiley face” in the eastern sky above the horizon ...

WASHINGTON (Reuters) -Astronomers have spotted a small rocky planet that orbits perilously close to its host star ...

The solar system has many more moons than the one we ... The two innermost planets, Venus and Mercury, will shine together low in the western sky at sunset on March 10. Here's how to get the ...

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 ...