There are several different kinds of redshift that we encounter in the universe. Those three are ‘gravitational’, ‘doppler‘ and ‘cosmological‘. Before looking at two examples, it is best to have a ...
Cosmological redshift depends upon a galaxy's distance. Credit: NASA/JPL-Caltech/R. Hurt (Caltech-IPAC) In 1929 Edwin Hubble published the first solid evidence that the universe is expanding. Drawing ...
RECENT spectral surveys of discrete radio sources have not revealed any significant dependence of spectral index on apparent intensity 1–3. It is therefore of interest to determine the way in which ...
Scientists know very little about the mysterious force dubbed “Dark Energy” that seems to be quickening the expansion of the universe but, according to LSU Physics and Astronomy Associate Professor ...
A very bright burst of gamma-rays was observed on March 29, 2003 by NASA's High Energy Transient Explorer (HETE-II), in a sky region within the constellation Leo. Within 90 min, a new, very bright ...
NASA’s Nancy Gracy Roman Space Telescope won’t launch until 2027, and it won’t start operating until some time after that. But that isn’t stopping excited scientists from dreaming about their new toy ...
'Supernova discovery machine' James Webb Space Telescope finds most distant star explosion on record
The powerful space telescope uncovered 80 early and distant star explosions in a patch of sky the size of a grain of rice. When you purchase through links on our site, we may earn an affiliate ...
Doing away with complex calculations? (CC-BY-2.0/Boaz Arad) The next time you need to quickly convert the redshift of some distant cosmic object to parsecs or kilometres, and find that your laptop and ...
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