Many believe that the object is extraterrestrial in nature and that it even contains a message for humanity.
The megastructure first proposed by physicist Freeman Dyson may be possible, but with very specific limitations.
NASA's Leroy Chiao had a close encounter with something he couldn't explain while flying his seaplane in 2023.
Concerns were raised when hundreds of strange black spheres started appearing along a popular Sydney beach.
The image is part of a series of photographs taken of a strange, illuminated sphere-shaped object spotted over the country.
If an alien civilization has terraformed the atmosphere of a distant planet, we may be able to find it.
Analyzing astronomical data for evidence of alien technosignatures could point us to extraterrestrial civilizations.
A gas discovered in the atmosphere of this distant extrasolar planet is 'only produced by life', say scientists.
Venus might not seem like a particularly hospitable place, but its atmosphere could support some forms of life.
NASA's Juno spacecraft has sampled Europa's atmosphere and discovered less oxygen than had been expected.
A peculiar metallic sphere found by a family in Florida 50 years ago sparked claims that it could be an alien device.
Just in time for Halloween, NASA has posted up an image of an eerie-looking formation in the gas giant's atmosphere.
NASA's James Webb Space Telescope has detected potential evidence of life in a planet 120 light years away.
The remarkable footage was disclosed during this week's Senate Committee hearing on the topic of UFOs.
A mysterious metal sphere has been the focus of much speculation since it appeared on a beach in Hamamatsu.
The controversial plan would involve using a fleet of 125 tanker jets to shroud part of the Earth's atmosphere.
The unidentified object reportedly landed in a tree after falling from the heavens over Veracruz on July 31st.
Two astrophysicists explore the possibilities of using the new telescope to analyze the atmospheres of extrasolar planets.
Known as 'trioxides', these highly reactive chemicals could be contributing to health and environmental problems.
NASA's car-sized rover has successfully managed to turn the Martian atmosphere into breathable oxygen.