The probability of humanity being the sole technological civilization in the observable universe is considered to be less ...

Space agencies have systems in place to spot, track, and forecast the future orbits of potentially hazardous asteroids.

President Trump’s blueprints to build a space-based missile defense shield could help him push for reductions in atomic weapons arsenals across the great nuclear powers.

A U.S. scientist searching for a civilization across 7 Earth clones circling the red dwarf star TRAPPIST-1 says its own alien ...

"This agreement represents a significant milestone for Planet; it is our largest contract to date and is a major step forward ...

Space games have been there since the beginning of video game history. Today, these five offer galactic explorers a broad mix ...

President Donald Trump has laid out some lofty goals for space exploration in his second term. Private companies like SpaceX and Blue Origin are not yet publicly traded, but other space companies are.