1. a scientist who studies the possibility of life existing outside Earth, including the search for extraterrestrial organisms and the conditions necessary for life in space.
Usage: specialized field combining astronomy, biology, and planetary science

Examples

• The astrobiologist examined samples from Mars to search for signs of ancient microbial life.
• Astrobiologists study extreme environments on Earth to understand where life might survive in space.
• Dr. Chen, an astrobiologist, presented her findings on the habitability of Europa, one of Jupiter's moons.
• Astrobiologists collaborate with astronomers and geologists to explore the possibility of life beyond our planet.
• The research team of astrobiologists discovered organic compounds in meteorites that fell to Earth.
• As an astrobiologist, she spent years analyzing data from space probes searching for biosignatures.