A new exoplanet model screens rocky worlds by their ability to retain atmospheres over geologic timescales, helping narrow the search for potentially habitable planets beyond Earth.

Earth may have gotten some of the key ingredients for life from asteroids in the inner solar system, but not without assistance from Jupiter.
…

A new study analyzed how NASA’s Habitable Worlds Observatory might be able to confidently spot biosignatures in the atmosphere of a distant ancient Earth.
…

As Steven Spielberg’s alien conspiracy thriller “Disclosure Day” heads to theaters, Space.com talks to the astronomer who has led efforts to make sure any real alien detection will not be kept a secret.
…

Scientists failed to find radio signals emanating from the interstellar comet 3I/ATLAS, further bolstering its status as a natural object, not one made by aliens.
…

On May 8, the Pentagon released its first tranche of “UFO files.” Space.com reached out to experts to make sense of this highly anticipated data drop.
…

Much of the UFO imagery that the Pentagon released last week was new, but we’ve known for decades about the odd things that the Apollo astronauts saw on and around the moon.
…

Scientists say amino acids produced by life are distributed differently and more diversely than amino acids produced by non-living chemical reactions, thereby providing a truer signature of life.
…

The Pentagon released a new tranche of UFO files on Friday (May 8). Among the documents are nearly 30 videos, which feature a range of intriguing objects.
…

Earth is dotted with many humongous, human-made structures. To an alien eye, they may be tell-tale signs of intelligent goings-on, betraying our existence and hinting at our capabilities.
…