Results for: Biosignatures

Recent advancements in space exploration have facilitated the discovery of numerous exoplanets. The transition toward characterizing these exoplanets has led to a search for chemical signatures or biosignatures associated with life. While Earth serves as a reference point for habitability and life detection, scientists emphasize the need to consider the unique evolutionary trajectories of different planets. Astrobiologists are exploring biosignatures consistent with primitive life forms that may have existed on Earth billions of years ago. By understanding ancient Earth’s atmosphere and life forms, scientists aim to identify biosignatures that could indicate life on exoplanets with similar environmental conditions.

According to a new fringe theory, alien life may be traveling through space on meteors and colonizing other planets in a process known as panspermia. By riding on celestial bodies, extraterrestrial life could spread across the galaxy, modifying the environments of planets it encounters to resemble its own home planet. This concept suggests that life may not originate on a single planet but could have arisen on multiple exoplanets throughout the universe.