6 Things Light Tells Astronomers

#Space

Sun, Aug 10th, 2014 11:00 by capnasty NEWS

Quick and very educational TED-Ed video that explains all the things astronomers can understand by looking at the light of stars from the distant universe.

Humanity has long been looking at the universe and asking the big questions: How did it begin? How will it end? Cosmologists are searching hard for the answers, but where do they even start? The answer is light. Pete Edwards outlines the six unique messages that light carries which, when put together, disclose a stunning amount of information to astronomers.

  1468

 

You may also be interested in:

"Psyche [...] may be the exposed metal core of an early planet, the soul of a celestial body."
"Research suggests we aren’t ready to send astronauts to Mars for a visit, much less to live there."
"If it sounds far-fetched to consider earthly extinction scenarios, it shouldn’t."
"The Martian colonists would experience a phenomenon known as the founder effect."
"The new cloud of water is enough to supply 28 galaxies with water."