Researchers have called into question the reasoning behind Pluto's demotion from planet to dwarf planet.
Three red lights in a triangular formation were spotted over a home in North Caulfield earlier this month.
A new study has determined how a volcanic eruption 205 million years ago wiped out 90 percent of all life on Earth.
The US military's mysterious X-37B has spent almost a year in space on its latest secretive mission.
Scientists have discovered that the Moon may not be the only natural satellite in orbit around our planet.
Scientists have determined that a significant percentage of planets in our galaxy may be covered in water.
The extrasolar planet known as Kelt-9b is so hot that its atmosphere contains vaporized iron and titanium.
The huge object is 12.7 times the mass of Jupiter and has a magnetic field 200 times more powerful.
A large Earth-like world has emerged as the most likely place to look for life outside of our solar system.
NASA's Transiting Exoplanet Survey Satellite (TESS) is now on the hunt for habitable extrasolar worlds.
The third rocket-powered test flight of SpaceShipTwo provided its pilots with a spectacular view of our planet.
Scientists believe that they have identified a body of water situated beneath the planet's south polar ice cap.
The discovery means that the gas giant has a total of 79 moons - more than any other planet in the solar system.
Scientists have found evidence of a collision between the gas giant and an object twice the size of the Earth.
Astronomers at the European Southern Observatory have photographed a planet forming around a star.
As if space junk wasn't already enough of a problem, a war in space could litter the planet's orbit with tons of debris.
The dust storm that left the Opportunity rover out of commission is now classed as 'planet-encircling'.
A long-running mystery concerning an unexplained glow in parts of the night sky has finally been solved.
Astronomers have found a solar system 160 light years away with three planets roughly the size of our own.
Scientists have come up with an alternative explanation for the peculiar orbits of some distant objects.