Electric thrusters for spacecraft are increasingly shrinking, and could prove key for new interplanetary missions, experts say.
A new startup called Aevum aims to launch satellites to Earth orbit every 3 hours using rockets carried on a fully autonomous unmanned airplane.
A dust-enshrouded giant black hole ripping apart a star blasted out a superfast jet of particles that packed about 125 billion times the amount of energy the sun releases per year, a new study finds.
A black hole could have 1 million planets orbiting near it that are potentially capable of supporting life as we know it, an astrophysicist suggests.
Lightning storms on Jupiter are much more frequent, and much less alien, than previously thought, a pair of new studies suggests.
Physicists speculate that decaying neutrons may be producing particles unknown to science that make up the elusive dark matter.
The odd shapes of the inner moons of Saturn, from ravioli to potatoes, may be due to mergers of tiny moonlets, a new study finds.
Astronomers may have unknowingly discovered rocky planets with rings, which they may have mistaken for other kinds of worlds, a new study finds.
Legal experts are now developing a manual on how Earthbound laws might apply to wars in outer space, in the hope of deterring such conflicts from happening.
This is a serious question, and serious scientists are speculating about what traces these potential predecessors might have left behind.
Worlds with twin suns, like Luke Skywalker's fictional home Tatooine in "Star Wars," may be rare because closely paired stars gravitationally hurl planets away from them, a new study finds.
Any alien civilizations born on "super-Earth" planets may be ground-bound by their home worlds' powerful gravity, a new study suggests.
The solar system recently received its first interstellar visitor, 'Oumuamua, and researchers have now suggested a plan for a mission to meet the next guest from another star.
A swarm of thousands of black holes may surround the giant black hole at the heart of our galaxy, a new study finds.
Scientists have discovered a metal-heavy cannonball of an exoplanet resembling an Earth-size version of Mercury.
The rise of the largest volcanoes in the solar system may have led Mars to possess oceans hundreds of millions of years earlier than previously thought, a new study finds.