It's difficult to imagine that the universe has a 'center' - but just as difficult to imagine that it doesn't.
What if the Big Bang wasn't the start of all things, but a rebound from a colossal gravitational collapse ?
For years, it was believed that our galaxy was on an inevitable path toward a collision with its nearest neighbor.
To call Elon Musk's plans for sending humans to Mars overly ambitious would be a major understatement.
A passing star could disrupt the orbits of the planets and cause the Earth to be flung off into deep space.
In Ridley Scott's 'The Martian', Matt Damon's character ends up stranded on the Red Planet in the year 2035.
The previously unseen world is believed to orbit far out at a range of 838 times Earth's distance from the Sun.
The unknown strain of bacteria, which exists nowhere on Earth, was found aboard China's Tiangong space station.
For decades, these unusual recurring surface features have prompted speculation that there could be liquid water on Mars.
Scientists now believe that the subsurface of Venus might be a lot more active than previously thought.
New research into stellar decay has revealed that the universe will completely die out a lot sooner than previously believed.
The debate over exactly what qualifies someone to be referred to as an astronaut has recently been reignited.
A 53-year-old Soviet satellite is expected to fall back down to Earth sometime within the next few days.
Tantalizing new evidence of this mysterious world has been found courtesy of two deep infrared surveys.
A remarkable new image snapped from orbit shows the Curiosity rover trundling across the surface of Mars.
Scientists have been unable to determine where the rock came from or how it got to this location.
The megastructure first proposed by physicist Freeman Dyson may be possible, but with very specific limitations.
The whereabouts of half the ordinary matter in the universe has long proven something of an enigma.
The singer soared into the heavens earlier today on a groundbreaking flight atop Blue Origin's New Shepard rocket.
Seismic readings from NASA's InSight lander have increased the likelihood that there is life on Mars today.