What would our atmosphere look like if there were no life on Earth?
University of Washington researchers have published a 5-billion-year computational simulation of Earth without life, ...
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 ...
This summer, exoplanet science—the study of planets orbiting stars beyond our sun—took a big step forward. Reports of helium gas escaping from the atmosphere of LHS 1140b propelled this exoplanet from ...
Former NASA astronaut Winston Scott said he believes intelligent alien life exists, but cautioned that military conflict in ...