The anti-satellite weapons are part of massive pushes to upgrade and update their militaries.
Tiangong-1 is on its way home with a vengeance, but can it really hurt you?
Space weather storms have happened since the birth of the solar system, and have hit Earth many times.
No worries—humanity will be long gone by the time the universe implodes.
Russia said the U.S. may risk "opening a Pandora's box" if it takes their military rivalry to outer space.
The FCC ruled the firm's tiny satellites were too small to be adequately monitored, and risked collision with other spacecraft.
Radio waves are fast, but not fast enough to reach us before a civilization goes extinct.
Wearable technology will use wireless sensors to monitor an astronaut's wellbeing and make automatic adjustments in their environment to make them more comfortable.
The storm could smell like rotten eggs, according to scientists.
A new theoretical model of dark matter suggests it contains two distinct varieties of charged particles, which would allow it to form compact objects.
Musk thinks he can avoid the Cold War-era disasters.
Neptune and Uranus could have thin exterior shells of liquid water and thick interior mantles of superionic ice water.
Neutrinos and gamma rays may be the "daughter particles" of ultra-high-energy cosmic rays.
Rocket Lab's Still Testing rocket successfully reached orbit and deployed Earth-tracking satellites.
The planet Mercury was the key for this latest feat.