A close encounter of the rocky kind is set for Feb. 15, when an office-building-size asteroid will speed past Earth fcloser than some communications satellites.

The nearest potentially habitable, Earth-like planet may be a scant 13 light-years away

An asteroid the size of a 15-story building will zoom past Earth next week, flying uncommonly close but posing no danger.

Earth-like worlds may be closer and more plentiful than anyone imagined.

The European Space Agency (ESA) study is investigating how practical constructing a manned base on the moon only using 3D printing technology

NASA’s Gateway to Astronaut Photography website continues to provide tantalizing evidence of UFOs in space.

My colleague Ian O’Neill has described one of the most unique interplanetary missions in the history of space exploration

Your mission, should you choose to accept it: Refine an asteroid deflection plan that will attempt to bring a little piece of Armageddon to a space rock in 2022.

The last time NASA fired an F-1 in anger was in 1972, with the launch of Apollo 17.

Ever look up at the stars and wonder if some bug-eyed creature is doing the same? It turns out at least one does: the dung beetle

The fireball that lit up the predawn Northern California sky last week was a small comet that flamed out when it hit the Earth's atmosphere, a researcher said.

It's the latest pet project from the Pentagon's research wing known for its quirky and sometimes out-there ideas.

A new asteroid-mining company launched Tuesday with the goal of helping humanity expand across the solar system

Martian rocks from a crater hit by a meteorite may contain the strongest evidence yet that there is life on Mars.