With the discovery of a fourth giant planet, astronomers are hailing the HR 8799 system as remarkably similar to our own.
A day later than planned, the first test flight and re-entry of a commercial spaceship has been completed successfuly.
Japan's Akatsuki probe has failed to go into orbit around Venus as planned, meaning a six-year wait until another attempt can be made.
Yesterday, NASA for the first time successfully ejected a nanosatellite from a free-flying microsatellite, marking a big step forward for efforts to clear space junk using solar sails.
The first demonstration flight of SpaceX's Falcon 9 commercial spacecraft for NASA's Commercial Orbital Transportation Services program has been postponed.
A Russian rocket carrying three satellites crashed yesterday after blasting off from the Baikonur launchpad.
Astronomers have observed unexpected patterns in the light emitted by exploding stars, or novae.
Astrophysicists have made the first measurements of the atmosphere of a 'super-Earth' planet known as GJ 1214b.
New observations have indicated that there are three times as many stars in the universe as previously believed.
ESA scientists reckon they've explained a mysterious high-altitude layer of sulphur dioxide discovered by Venus Express - and it provides a stark warning for geoengineers suggesting seeding Earth's atmosphere with sulphur droplets to combat climate change.
An Australian physicist says he's solved the mystery of a series of UFO sightings over South-East Queensland in May 2006.
The US Air Force's top-secret X-37B spacecraft is set to land sometime in the next few days at the Vandenberg Air Force Base.
A leading Oxford University cosmologist says he has been able to observe the effects of cosmic events that preceded the Big Bang.
The Cassini-Huygens mission has identified an oxygen-carbon dioxide atmosphere around Saturn's second-biggest moon, Rhea - the first time a spacecraft has captured an oxygen atmosphere from a world other than Earth.
Two Americans and a Russian returned safely last night from the International Space station, touching down last night on the Kazakhstan steppe.
Russian space contractor RSC Energia has confirmed plans for the design of advanced space modules that will be powered by nuclear-based propulsion systems.
The last flight for space shuttle Discovery is looking increasingly likely to be pushed back to next year, as engineers battle to carry out a series of repairs.
The Federal Aviation Administration (FAA) has awarded SpaceX the first-ever commercial license to re-enter a spacecraft from orbit.
The European Space Agency has decided to give a new lease of life to 11 of its operating space science missions. All are coming to the end of their funding - but still delivering important scientific results.
The US Air Force launched a massive spy satellite yesterday for the National Reconnaissance Office (NRO).