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 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.
Researchers recently discovered the hottest planet known. But which one is the coldest? And the biggest?
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.
Australia's new partnership with the European Southern Observatory will give our astronomers access to much bigger telescopes.
Plants on other planets are bound to be even weirder than the strangest ones we find on Earth – if they even exist.
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.
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.
Scientists have discovered seven Earth-sized planets packed around a dim star.
Enormous odd feature presents puzzle for scientists.
The moon may be slightly older than previously thought, suggests a new study.
Funding has been agreed for ESA's ExoMars rover, giving new hope that Europe could find life on Mars.
Scientists are excited about sending a microphone to Mars for the very first time.
Many images of planets have been manipulated. So have we seen their true colours? Not always, it turns out. But Jupiter's red spot really is red.
Earth is the only planet in our solar system with both plate tectonics and life. Is there a connection?
A look at some of the more obscure methods astronomers use to detect planets around other stars, in the second of a two-part series on finding world's elsewhere in the universe.
Astronomers have discovered more than 3,000 planets around other stars, so far. In the first of a two-part series we look at how they find world's elsewhere in the universe.
Why Planet Nine should be found in the next few years ... if it exists.
We take our understanding of the solar system for granted, but it took centuries to figure out. The original writings of Ptolemy, Copernicus, Galileo and others show how they sparked a revolution.
A US$100-million plan has been announced to send tiny probes out in space in search of life elsewhere in the universe. But are they looking in the right place?