A new trajectory means the mission to uncover core facts about the asteroid belt will happen sooner than planned.
NASA/JPL/University of Arizona
Simulations in a special chamber suggest how the Mars landscape could have been shaped under certain conditions.
The Viking landers in the 1970s were the last to look directly for life on Mars.
Planetary protection protocols try to make sure we don't seed places like Mars with life from our planet. An astrobiologist argues they're misguided – especially with human astronauts on the horizon.
The mass of the Earth is big enough that the gravitational force it creates can pull the hard shape of ice, rock and metal into a sphere.
NASA Earth Observatory images by Joshua Stevens, using Suomi NPP VIIRS data from Miguel Román, NASA's Goddard Space Flight Center
Imagine the Earth pulling everything it is made up of, all of its mass, towards its centre. This happens evenly all over the Earth, causing it to take on a round shape.
Lasers being shone from the European Southern Observatory’s Very Large Telescope in Chile.
These lasers help remove the twinkles in the night sky and help astronomers see stars clearer on Earth than ever before.
How exactly do the stars twinkle in the night sky? As it turns out, the answer is full of hot air... and cold air.
Two spacecraft concepts for the Plato mission.
While we on Earth are familiar with our own star, the Sun, the European Space Agency's PLATO mission will explore solar systems similar to ours as well as those that are more exotic.
While Mercury is indeed very hot, it is not hot enough to melt.
The planets closer to the Sun are indeed hotter than the Earth is. But they are still not hot enough to melt the rocks they are made from.
A solar eclipse observed over Grand Canyon National Park in May 2012.
Grand Canyon National Park
More than 2,000 years ago, the Babylonians understood the cycle of eclipses. They also regarded them as signs that could foretell the death of a king.
In the beginning, the Universe expanded very, very fast.
What caused the Big Bang is still a mystery. And that's just one of the many unanswered questions, in spite of everything we do know about the birth of the Universe.
The raw images of Jupiter’s Great Red Spot taken this week by the Juno probe.
The images are in from the Juno probe's closest flyby so far of Jupiter's Great Red Spot. Citizen scientists are now getting involved in processing those images.
KELT-9B is the hottest known planet.
Researchers recently discovered the hottest planet known. But which one is the coldest? And the biggest?
This enhanced-color image of Jupiter’s south pole and its swirling atmosphere was created by citizen scientist Roman Tkachenko using data from the JunoCam imager on NASA’s Juno spacecraft.
We may need to re-think our models of Jupiter’s formation thanks to the first results from Juno probe orbiting the planet, and new observations from Earth.
ESO provides new ways to access the southern sky for Australian astronomy.
ESO/José Francisco Salgado
Australia's new partnership with the European Southern Observatory will give our astronomers access to much bigger telescopes.
Almost every star has planets – so there are more planets in our galaxy than there are stars.
NASA Ames/JPL-Caltech/T. Pyle
Plants on other planets are bound to be even weirder than the strangest ones we find on Earth – if they even exist.
Saturn and its rings backlit by the sun, which is blocked by the planet in this view. Encircling the planet and inner rings is the much more extended E-ring.
NASA/JPL/Space Science Institute
With the probe now on its 'Grand Finale,' a Cassini team member describes the amazing discoveries it made about the ringed planet and its many moons.
Pluto is a dwarf planet but that doesn’t make it any less worthy of our attention.
A group of astronomers are trying to reclassify Pluto as full 'planet'. But there are good reasons to leave our classification system alone, and this doesn't mean Pluto is any less interesting.
Artist impression of the Trappist-1 System.
Credit: ESO/M. Kornmesser/spaceengine.org
Scientists have discovered seven Earth-sized planets packed around a dim star.
Strange shape in Venus’ atmosphere.
Enormous odd feature presents puzzle for scientists.
Right side of the moon.
NASA/Goddard Space Flight Center Scientific Visualization Studio
The moon may be slightly older than previously thought, suggests a new study.
Mars seen by the Viking oriter.
Funding has been agreed for ESA's ExoMars rover, giving new hope that Europe could find life on Mars.