Detecting gravitational waves was one of the most important discoveries of the century.
During its historic 2015 Pluto flyby, Nasa's New Horizons spacecraft captured 1,200 photos and collected 10GB worth of data.
Astronomers say that although unlikely, the possibility that signals came from intelligent extraterrestrial life cannot be ruled out yet.
'Water bears' would live through an asteroid hitting Earth, and survive until the Sun dies.
'Entry, descent and landing is a huge challenge for us for Mars,' said Nasa's chief of human spaceflight, William H. Gerstenmaier.
Understanding the Sun's magnetic cycle is key to understanding space weather.
The spacecraft successfully completed a flyby, coming within 9,000km of Jupiter's iconic hurricane.
Ice VII is a very rare structure usually only found in outer space.
Fungi are growing in closed habitats, endangering human health.
Scientists are reportedly stumped by Pluto's X-ray emissions, raising more questions about its atmosphere.
The second-generation Space Race sees tech billionaires battle to find humanity a new home.
A new model shines light on the Moon's early formation and evolution.
"Light shows like these always have astronauts gazing back down," Nasa says.
'Only one chance to get it right,' Musk tweeted prior to the launch.
Scientists have studied the process of planet formation in the aftermath of a supernova explosion.
The runaway stars are thought to have been born in the Large Magellanic Cloud.
Nasa's 'refrigerator-sized' spacecraft will smash into an asteroid at a speed about 'nine times faster than a bullet.'
The second aborted launch came just hours after SpaceX successfully guided its Dragon capsule back to Earth.
Nasa scientists are simulating the asteroid that broke up over Chelyabinsk to plan for future incidents.
"This is so terrible and the best at the same time", one person quipped.
Britain's first commercial space training and research facility is slated to open in 2019.
"Another SpaceX launch today if weather is good," SpaceX CEO Elon Musk tweeted.
In a new study, scientists looked into how the Sun's coronal mass ejections behave as they travel through space.
India and China have also been announcing ambitious plans to develop their space programs.
China has new missile shelters, runways and radar and communications facilities on the disputed Spratly islands in the South China Sea.
A guest on Alex Jones' talk show alleged that children were kidnapped and sent to Mars as 'slaves.'
Nasa's Mars Orbiter has sent back multiple stunning images of Mars since 2005.
Disasters like the events at Chelyabinsk in 2013 could happen again in the future.
World Asteroid Day raises awareness of the threats posed by asteroids.
These ripple in spacetime are revolutionising our understanding of the universe.