By observing the way the moon reflects light from the Earth, astronomers have established that there's life on our planet - not as pointless as it seems, as the technique could help find life elsewhere.
Free-flying planets, not anchored to a star, could outnumber stars in the Milky Way by 100,000 to one.
Mars may have been an arid planet for over 600 million years, making it too hostile for any life to survive on the planet's surface.
Chemists have made a big step towards the creation of a completely artificial life form.
British chemists at the University of York have moved closer towards establishing the origin of the carbohydrates that form the building blocks of life.
Biologists have persuaded a single-celled organism, brewer's yeast, to evolve into a multicellular cluster, mimicking one of the first stages of evolution on Earth.
The discovery of microbes in any icy lava tube in Oregon raises hope that similar microorganisms could survive in the very similar conditions to be found on Mars.
As much as three percent of Mars could sustain life, say scientists from the Australian National University - but most habitable areas are underground.
Scientists from the University of Texas at Austin have discovered what appears to be a massive body of liquid water locked inside the icy shell of Jupiter's moon Europa.
Astrobiologists say they've discovered where in outer space complex organic molecules - the building blocks of life - are most likely to form.
Liquid water on the Martian surface was probably never around for very long, meaning life would have struggled to gain a foothold there.
Complex organic molecules like those on which life is based exist throughout the universe and can be made naturally by stars, European Space Agency data has revealed.
A British engineering team will next week head off to Antarctica in an attempt to understand more about the evolution of life on Earth and other planets.
It's known that the Earth almost certainly went through a period of global glaciation billions of years ago - but it's never been clear how life managed to survive.
ESA’s Venus Express spacecraft has found an ozone layer high in the atmosphere of Venus, in a discovery which could help with the search for life on other planets.
Scottish scientists say they've taken the first steps towards creating a form of life based on inorganic elements.
These days rock and roll memoirs seem like reality TV shows in that you'd think everyone's got one.
A new million-dollar NASA project led by the University of Michigan aims to discover whether drops of salt water are common on Mars - and whether microbial life could survive in them.
Oxygen may have been sustaining life in Earth's oceans long before there was any trace of it in the atmosphere.
The channels on Mars widely supposed to have been created by flowing water have a completely different origin, says a Texas Tech University professor.