While there is no concrete evidence of life beyond Earth, many scientists say the possibility is likely. Researchers continue to search for signs of extraterrestrial life by studying other planets and moons, particularly their atmospheres, in search of conditions that could support life. There's no telling what's out there, and if aliens exist, they could range from creatures as simple as tiny organisms to other complex beings with technologically advanced civilizations. Explore our findings on aliens, from scientific research on the topic to famous accounts of claimed sightings.
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Given the vastness of the universe, detecting alien life may require technological progress beyond the limits of what is sociologically viable and physically possible. Although interstellar civilizations are unlikely, messaging techniques and probes may improve the odds of successful communication with other intelligent life.
An analysis of the atmosphere of an exoplanet called K2-18b identified the presence of biosignatures—molecules that are created by living things on Earth. This discovery may indicate life exists beyond Earth, but the lack of environmental data complicates the interpretation of results.
A video shows what appears to be pyramid shaped objects hovering above a Navy destroyer
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