What field of science investigates ideas about a possible ex?

The field of science that investigates ideas about possible extraterrestrial life is astrobiology. This interdisciplinary field combines elements of Biology, astronomy, and planetary science to explore the conditions under which life might arise elsewhere in the universe. Astrobiologists study extreme environments on Earth, the chemistry of life, and the potential habitability of other planets and moons. Additionally, they analyze data from space missions and telescopes to search for signs of life beyond our planet.