Physicist Brian Cox explores where scientists might discover extraterrestrial life, focusing on Mars, Jupiter's moon Europa, ...

Using data gathered by NASA's Juno Jupiter orbiter, scientists estimate that Europa's ice shell is about 18 miles thick — ...

When it comes to the search for life elsewhere in the universe, methane and other chemical compounds are seen as signs of biology because they are often produced by living microbes. However, ...

Each colored dot represents a computer program of a particular "genotype." Each time a program’s underlying code mutates during replication, it changes color. In the search for alien life, humans have ...

Science fiction suggests that life on other planets, if it exists, is likely far more advanced than life on Earth. A recent study suggests otherwise. This new study, led by Chris Doughty, a professor ...

Scientists are calling for a lunar quarantine facility where samples from Mars, the Moon, and beyond would be examined before being brought to Earth. They warn that even a tiny alien microorganism ...

Life in helium atmospheres on exoplanets? When searching for possible signs of alien life on exoplanets, scientists tend to focus on atmospheres that might be earthlike. That is, atmospheres dominated ...