The US government has been sharing more information about UFOs. That's fueling excitement over the possibility of the president announcing that humans are not alone. Twenty years later, the former is ...

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 ...

Atmosphere-biosphere interactions play a vital role in regulating the exchange of energy, matter, and gases between the Earth’s atmosphere and its terrestrial and aquatic ecosystems. These ...

The robotic Tianwen-3 mission would travel to the Red Planet, collect 500 grams of samples and return them to Earth by 2031.