Caltech President Ray Jayawardhana studies planets beyond our solar system in the search for alien life. But he now faces ...

Could life really thrive in the extreme conditions of Jupiter's atmosphere? Join scientists as they explore the fascinating idea of balloon-like organisms drifting through the gas giant's dense clouds ...

Two major alien-life announcements in 2025 generated enormous excitement, but most astrobiologists remained unconvinced. Only 6.6% of surveyed experts thought possible biological molecules on K2-18b ...

Alien life may not need the kind of home humans instinctively search for. Some of the strangest possibilities begin once ...

Earth already contains organisms that survive conditions humans could never endure. Alien life, if it exists, may force ...

Scientists have been eyeing the mysterious water world as one of the most promising places to find alien life for a while now, and this study suggests they’re on the right track. The moon, which is ...

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, ...

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 ...

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 ...