Methane is such a promising sign for the existence of biological life that it's hard not to get excited when it's detected on Mars. But Amy Shira-Teitel runs down some other ways the gas could be observed on the Red Planet without their being life.
A gas strongly associated with life on Earth has been detected again in the Martian atmosphere, opening a new chapter in a decade-old mystery about the on-again, off-again appearance of methane on Mars.
Astronomers have detected a huge array of exoplanets of different sizes -- now we are on the verge of detecting worlds of different shapes.
For the first time, a computer simulation has shown that, in theory, habitable binary planets can exist -- what would this mean for the evolution of alien life?
Dust gets everywhere, particularly around young stars. But when it comes to the presence of dust in their interplanetary environments, many mature sun-like stars are very house-proud. Continue reading →
Life is all around us, on Earth. But what about elsewhere in the Universe? NASA has announced new funding for 7 institutions to tackle this question. Continue reading →
If Professor Hubert Farnsworth's 'Smell-O-Scope' actually existed, astrobiologists would have pointed it at dozens of alien planets by now.
No matter how advances a hypothetical extraterrestrial civilization becomes, they will still generate a heat signature that we may be able to detect. Continue reading →
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