Sorry guys: Largest sky survey of its kind finds no evidence of aliens, no laser signals

April 21, 2017
Either alien civilizations aren't using powerful lasers like we thought they might be or those aliens just aren't there.
In a new study, researchers looked at light coming from 5,600 stars in our own Milky Way – with 2,000 of those thought to host warm, Earth-like planets – but found nothing. Either alien civilizations aren't using powerful laser beams like we thought they might be, or those aliens just aren't there.

A team from the University of California Berkeley based their work on ideas proposed by fellow SETI (Search for Extraterrestrial Intelligence) scientists; namely: if advanced life exists out there, it might well be using directed energy laser technology.

The study has been accepted for publication in an upcoming edition of The Astronomical Journal. Until then, you can read the preprint version at

Sponsored Recommendations

Flexible, Thixotropic, One Component Dual Cure Epoxy

Dec. 1, 2023
Master Bond UV23FLDC-80TK is a moderate viscosity, cationic type system that offers both UV light and heat curing mechanisms. It cures readily within 20-30 seconds when exposed...

MRF Polishing

Dec. 1, 2023
Welcome to Avantier, your esteemed partner in optical solutions for over five decades. With a legacy of expert knowledge, we invite you to delve into the realm of precision optics...

Fluorescence Microscopy Part 1: Illuminating Samples for High-Resolution Imaging

Dec. 1, 2023
Illuminating Samples Fluorescence microscopy is a powerful imaging technique widely used in various fields, especially in biomedical research, to visualize and study fluorescently...

Photonics Business Moves: December 1, 2023

Dec. 1, 2023
Here are the top four photonics business moves that made headlines during the week ending December 1, 2023.

Voice your opinion!

To join the conversation, and become an exclusive member of Laser Focus World, create an account today!