Life on Earth has dramatically changed the chemistry of the planet. Astronomers will measure light that bounces off distant planets to look for similar clues that they host life.
There’s a good reason why so many scientists disagree with claims that Earth has been visited by aliens.
Methane gas in the atmosphere is a tantalising hint suggesting that life could exists on Mars.
OSIRIS-REx will touch down on asteroid Bennu, collect a sample of the dust and begin its journey back to Earth, where scientists will study it, hoping to learn secrets of the solar system’s origin.
New findings boost chances of finding life on Mars, but there are better candidates in the solar system.
How ancient microbes survived in a world without oxygen has been a mystery. Scientists discovered a living microbial mat that uses arsenic instead of oxygen for photosynthesis and respiration.
News that Venus may harbor life has swept the globe. So how do we find out for sure? A planetary scientist explains what’s next.
The discovery of phosphine in the acidic clouds of Venus can’t be explained by any known chemical or geological processes.
The Earth may be crawling with undiscovered creatures with a different biochemistry to life as we know it.
The short answer is yes, but it’s really, really difficult.
To prepare for future Mars missions, scientists collect samples and simulate communications conditions from volcano parks on Earth.
The space industry and global interest in all matters inter-planetary is growing.
Studies from our own planet shed light on whether there could be life in a subglacial lake on Mars.
Life could have evolved on exoplanets Kepler-452b and Kepler-62e, according to a new study.
Following NASA’s latest discovery of organic matter on the red planet, new findings in a salt lake in California could point to where to look for alien life.
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.
If you want to live on Mars, you’re going to need to grow food. Seeds are naturally equipped to handle challenging Earth environments, but how well can they survive what they’ll encounter off-planet?
Even if alien life is never discovered, all is not lost.
Cassini is about to crash into Saturn to avoid contaminating its habitable moon Enceladus.
There has been much excitement this week about the possibility of water – and life – on some newly discovered exoplanets. But we can look closer to home for evidence of ET.