Articles sur Astrobiology

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Scientists conduct research in Hawai'i Volcanoes National Park to practice for Mars landings. Shutterstock

Rehearsing for the Mars landings in Hawaii and Idaho

To prepare for future Mars missions, scientists collect samples and simulate communications conditions from volcano parks on Earth.
Artist’s rendition of one of the billions of rocky exoplanets in our galaxy. Did life once exist on its surface? NASA/JPL-Caltech

RIP E.T. – alien life on most exoplanets dies young

Complex life may be rare in the universe because most planets become either too hot or too cold before life has a chance to get a foothold. This might explain why we have yet to bump into E.T.
No green little men as far as the eye can see. ESA/Rosetta/NavCam

There’s no evidence to suggest there is life on Comet 67P

As far as underwhelming headlines go: “No Alien Life Found on Comet” must rank very close to the top. An article with this title appeared in the Guardian on July 6 in response to a story claiming that…
Hydrothermal vents: nurseries for life on Earth? Wolfgang Staudt/Flickr

Was life on Earth kickstarted by hot water?

Scientists have simulated the electrical energy produced in the Earth that may have led to life 3.5 billion years ago. Using…
Funny looking alien. University of Sheffield

Proof of alien life? You need a lot more evidence than that

Could life really exist on other planets? The most positive scientific answer we can offer is: well, maybe, but we do not yet have enough evidence for or against. Yet Milton Wainwright and colleagues from…
The red planet’s McLaughlin Crater may have contained water sourced from within the ground. NASA

Hope springs: signs of life could be waiting for us on Mars

A recent article in Nature Geoscience suggests that at least one large, deep crater on Mars may once have supported an alkaline lake that was fed by water from kilometres below the planet’s surface. This…
Sponges and hydra, which are made of colonies of cells with a small number of cell types, have some similarities with cancer. Biodiversity Heritage Library

An astrobiological view of cancer’s evolutionary origin

Life originated on Earth about four billion years ago. Death, sex and multicellularity came along about a billion years later. According to our new atavistic model, cancer came with multicellularity. About…

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