Radio silence has long puzzled those searching for extraterrestrial intelligence, but the answer might lie much closer to the ...

We may be missing alien radio signals because they have become smeared beyond the narrowband detectors that SETI utilizes, a new study suggests.

For four decades, many SETI experiments have focused on finding sharp spikes in frequency but the new study says signals may not stay narrow as they travel away from their home system.

A new study by the SETI Institute suggests that the alien signals might be right here, surrounding us all of the time, and we ...

Stellar plasma can smear alien radio signals before they escape their star system, making them harder for astronomers to detect.

What if there were aliens on some distant planet and what if they tried to contact us, but we were not able to pick up the message? That is the question that has been raised by a group of scientists.

Kidde has become the best-known name in the world of smart smoke detectors—a relatively low bar given how few people know the brand of their smoke detector. Still, you'll find Kidde recommended by ...

As binary neutron stars spiral around each other to merge, their gravitational tidal forces distort each other's shape and ...

President Donald Trump on Thursday night said he would declassify government files related to alien life and unidentified flying objects, citing the “tremendous interest” in the topic, an announcement ...

President Trump on Thursday directed his administration to release files on UFOs and any "alien and extraterrestrial life," an issue that has drawn decades of public fascination — and spawned more ...

All life on Earth depends on DNA—but that doesn’t mean life everywhere must follow the same blueprint. Scientists have shown that alternative genetic molecules, including RNA-based life, synthetic ...

In the 1990s, the Central Intelligence Agency dug into all it knew about the possibility of extraterrestrial visits, ultimately revealing what it found: Most of the supposed early UFO sightings were ...