Life magazine, special edition, 1969.
What is a Quasar?
by Life’s Little Mysteries staff
The word “quasar” refers to a “quasi-stellar radio source.” The first quasars were discovered in the 1960s when astronomers measured their very strong radio emissions. Later, scientists discovered that quasars are actually radio-quiet, with very little radio emission. However, quasars are some of the brightest and most distant objects we can see.
These ultra-bright objects are likely the centers of active galaxies where supermassive black holes reside. As material spirals into the black holes, a large part of the mass is converted to energy. It is this energy that we see. And though smaller than our solar system, a single quasar can outshine an entire galaxy of a hundred billion stars.
To date, astronomers have identified more than a thousand quasars.
(via: Life’s Little Mysteries) (image: ESO/M. Kornmesser)
1962 Vol. 181, No. 6
Plasma Jets from Radio Galaxy Hercules A
Image Credit: NASA, ESA, S. Baum & C. O’Dea (RIT), R. Perley and W. Cotton (NRAO/AUI/NSF), and the Hubble Heritage Team (STScI/AURA)
This is one of my favorite facts ever.
It’s something that seems so obvious, yet something that we don’t really think about. Everyone has their own lives. Everyone has experienced things that you have never experienced and never will experience.
Everyone can teach you something if you let them.
If you can’t learn anything new from someone, the relationship is not worth.