Unfortunately for planet hunters, Mercury, Venus and Mars are all too close to the sun to observe; they will come out of the ...

Study finds Mars helps pace Earth's ice ages through gravity. Remove Mars, and a major 2.4-million-year climate rhythm ...

Physicists at the National Institute of Standards and Technology (NIST) have calculated that clocks on Mars tick 477 ...

The Artemis II mission will carry with it bone marrow tissue made from the mission’s astronauts’ own cells. Observations on ...

Planetary rings explained: composition, formation theories, and a comparison of Saturn, Jupiter, Uranus, and Neptune’s rings.

The U.S. is once again challenging itself to go to the moon, and this time, NASA and the Trump administration want to ...

NASA on Saturday rolled out its towering SLS rocket and Orion spacecraft as it began preparations for its first crewed ...

NASA’s Artemis II rocket has reached its launch pad after a painstaking overnight crawl across Kennedy Space Center. Engineers are now preparing for crucial fueling and countdown tests ahead of the ...

NASA's towering SLS rocket that will help propel four astronauts on a historic journey around the moon is now visible at the ...

A Mars spacecraft has now been AWOL for more than a month. But NASA hasn't given up hope of restoring contact with the MAVEN ...

NASA's giant new moon rocket moved to the launch pad Saturday in preparation for astronauts' first lunar fly-around in more ...

Mars may have once possessed an ocean at least as large as Earth's Arctic Ocean, a new study suggests. Previous research ...