Most alien-signal searches listen to a narrow part of the radio spectrum, but astronomers are now testing higher frequencies that have barely been explored. A first search using archived ALMA ...

Astronomers searching for signs of extraterrestrial intelligence may have been missing alien signals in part of the radio spectrum that has not recently been explored.

Researchers are zeroing in on more deliberate “narrow-band” alien signals, well outside the radio frequencies SETI has ...

Archived radio observations could open new frequencies to SETI while showing that past searches covered millions more stars ...

The Hubble Space Telescope has made multiple observations of exoplanet WASP-121 b, also known as Tylos. The extreme temperature changes the massive 'hot Jupiter'-type planet may make it rain iron at ...

One of the challenges of searching for technosignatures (i.e., signs that intelligent life somewhere in the universe has ...

Scientists say the findings of the new study may make future searches for extraterrestrial intelligence faster and more ...

Ancient Lost Worlds and Hidden History. On location videos made by author and adventurer Brien Foerster exploring Peru, ...

When astronomers observe distant exoplanets, they sometimes encounter a frustrating result: instead of revealing the chemical fingerprints of an atmosphere, the data appear almost completely flat.

Looking ahead: Existing radio surveys may contain signals that were never recognized as potential technosignatures. New ...

A rocky world orbiting within its star’s habitable zone may be surrounded by a helium-rich atmosphere, providing the ...

NASA researcher Heidi Becker has photographed sublime sights around Jupiter that have never been seen before, from its ...