SETI

Based on data from the Kepler Space Telescope and the Gaia mission, there may be up to 300 million habitable planets in our galaxy. The research refines a key factor in the Drake equation that estimates how many extraterrestrial civilizations may exist.

Given how big the universe is, chances are tiny that Earth is the only planet with life. But how would we find others? A new NASA grant has been awarded to try and do so by hunting for signs of advanced alien civilizations, or "technosignatures."

Neptune's collection of moons has officially grown to 14. Originally discovered in 2013 and designated S/2004 N 1, this tiny world is described more accurately in a new paper, which also gives it an origin story and, finally, a catchier name. Say hello to Hippocamp.

After a year of analysis, the SETI Institute has concluded that 'Oumuamua, the first interstellar object known to have visited our Solar System, isn't trying to make radio contact with us.

Whether there’s life beyond Earth is one of the most profound questions we can ask. Making ourselves easier to find could be part of our first contact strategy. A new MIT study outlines a way to use existing or near-future tech to build a kind of laser lighthouse to signal to our cosmic neighbors.

It looks as if the first interstellar asteroid may be just a big rock after all. The SETI initiative Breakthrough Listen announced that preliminary observations of `Oumuamua (A/2017 U1) show no sign that the 400 m (1,300 ft) long object is other than natural with no radio transmissions detected.

While SETI is content to scan the skies for signals, Messaging Extraterrestrial Intelligence (METI) takes a more active approach. Radio transmissions containing snippets of music have been sent to a potentially-habitable planet about 12 light-years from Earth, in hopes of making first contact.

​Back in May, the Arecibo Observatory detected strange radio signals coming from Ross 128, a red dwarf star 11 light-years away. After analyzing the data closely with the help of the SETI project, the team has now revealed what they believe to be the source of the signals.

The SETI Institute, in partnership with French startup Unistellar, wants to up the game for amateur astronomers by marketing a computerized 4.5-in (11.4 cm) reflecting telescope called the "eVscope" that acts as a crowd-sourcing instrument.

Is a mysterious radio signal received by the Arecibo Observatory a message from another civilization in our galaxy? Scientists at the Planetary Habitability Laboratory say it's highly unlikely, but the peculiar signals remain a mystery.

The Search for ExtraTerrestrial Intelligence (SETI) focuses mainly on looking for radio signals from civilizations elsewhere in the galaxy, but the SETI Institute is taking a new approach – and it involves lasers.

On Sunday the Chinese Academy of Sciences announced that the Five-hundred-meter Aperture Spherical radio Telescope (FAST)​ has begun operations.