Nasa is working to revive the New Horizons spacecraft after it suffered a computer malfunction just nine days before it was due to fly past Pluto.
Five previously hidden supermassive black holes have been discovered by British astronomers.
Aliens will not look like little green men with saucer-like eyes, says Professor Simon Conway Morris.
As the world celebrates World UFO Day, a local expert pinpoints the best places for UFO sightings in SA.
The comet being studied by Rosetta spacecraft has massive sinkholes that are nearly wide enough to swallow the Great Pyramid of Giza.
Professor Stephen Hawking will expand upon his theory of black holes when he delivers the 2015 BBC Reith Lecture.
A rare illusion will make Jupiter and Venus appear unusually close together in the sky.
SpaceX has nearly 50 launches, worth more than $7-billion, on its schedule.
On July 14, the space probe New Horizons will arrive at the Pluto system after a nine-year journey through space.
An investigation into Sunday's explosion, shortly after launch of one of the company's Falcon 9 rockets, will ground rockets for several months.
Privately owned OneWeb announced what it called the world's largest commercial rocket deal after raising $500-million.
An unmanned Vega rocket blasted off from French Guiana to put a sophisticated Earth-watching satellite into orbit. [VIDEO].
Chinese scientists have improved the technology needed to carry out docking between vessels in space.
Building a launchpad in Russia's Far East is central to President Putin's effort to reform a once-pioneering space industry.
European scientists are planning a risky manoeuvre to get their Rosetta spacecraft closer to the comet it is orbiting.