A U.S. scientist searching for a civilization across 7 Earth clones circling the red dwarf star TRAPPIST-1 says its own alien astronomers could also be scanning Earth.

36 articles by 62 experts in the fields of astrophysics, planetary science, and exobiology. Carl Sagan introduces this landmark book on "cosmoecology"-the ecology of the Universe-what enables planet ...

Named HD 20794 D, the newly discovered exoplanet orbits a star similar to the Sun, and researchers believe it may be able to sustain liquid water, which is vital for life, as we know it, to exist.

HD 20794 d is expected to be a focal point for upcoming projects like the Extremely Large Telescope, the Habitable Worlds Observatory, and the Large Interferometer For Exoplanets (LIFE). These ...

Credit: MARK GARLICK/SCIENCE PHOTO A super-Earth planet that dips in and out of its star's habitable zone has been discovered just 19.7 light-years away. The planet, known as HD 20794d, gets farther ...

Will they be in the habitable zone? Will there be life on any of ... it's accompanied by a rotating disk of gas and dust called a circumstellar disk. As material gathers into larger and larger ...

Unlike conventional approaches, which emphasise the circumstellar habitable zone (CHZ) based on liquid water, PEP prioritises planets within the CHZ with the greatest potential for sustaining ...