Tag Archive for 'Kardashev scale'

This illustration shows what the activities of a Kardashev Type III civilisation might look like - encapsulating the energy of stars by so-called Dyson spheres is one way to harness enormous energies on galactic scales; the resulting waste heat products should be detectable by telescopes. Image credit: Danielle Futselaar / ASTRON.

Murchison Widefield Array Searches for Extragalactic Alien Technosignatures

Aug 26, 2024 by Natali Anderson

Astronomers using the Murchison Widefield Array in Western Australia have searched for alien signals at a 10 kHz spectral resolution originating from a...

Photons emitted near rotating black holes encode quantum information that can be measured by actual quantum information technology. Image credit: Sci-News.com.

Physicists Verify Half-Century-Old Theory about Rotating Black Holes

Jun 24, 2020 by News Staff

Physicists from the University of Glasgow and the University of Arizona have experimentally verified a half-century-old theory that began as speculation...

Astronomer Finds No Evidence of Kardashev Type III Civilizations in Local Universe

Sep 17, 2015 by News Staff

So-called Kardashev Type III civilizations – galaxy-spanning civilizations that command power equal to all of the stars in their galaxy – are...

This image, from Hubble’s Advanced Camera for Surveys, shows the ultraluminous infrared galaxy Arp 220. Image credit: NASA / ESA / C. Wilson, McMaster University.

Search for Extraterrestrial Super-Civilizations Finds Nothing in 100,000 WISE Galaxies

Apr 15, 2015 by News Staff

Astronomers led by Roger Griffith of the Pennsylvania State University say they have found no evidence of so-called Type III Kardashev super-civilizations...