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Information about galaxies and their brightness. Using images of three spiral galaxies to measure galaxy flux.
The key to classifying a galaxy as a Seyfert Galaxy is the presence of broad emission lines from the bright, star-like nucleus. They are often strong radio and infrared sources. The first such active ...
Take part in real astronomy research by joining this public project classifying galaxies and taking part in citizen science.
Martin Rees (1942 - ) has made important contributions to the theories of galaxy formation, galaxy clustering, and the origin of the cosmic background radiation.
Explore the milky way in 3D
A fun game to try to see if you can tell what's older just by looking at it, and how we can tell the age of galaxies from the light they emit.
Measuring the red shift for several galaxies from spectral lines.
A well written introduction to our galaxy with some good diagrams too.
Want to do take part in some real research? Home to Galaxy Zoo, Moon Zoo, Solar Stormwatch and more, this site brings you citizen science at its best.
In this blog, theoretical astrophysicist Ethan Siegel covers a broad range of topics from dark energy to what our galaxy smells like.
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