History Channel
Season. 01 Episode. 12
http://www.history.com/shows/the-universe
http://en.wikipedia.org/wiki/The_Universe_%28TV_series%29
http://www.youtube.com/watch?v=O8hPz7-3hzQ
EXCERPTS:
MAGNETAR
12 Megnetar in our galaxy.
BLACKHOLES
"As an object approaches the edge of black hole
called the 'even horizon,'
it reaches the point of no return.
"Our black hole (black hone in the center of milky way) is, today inactive, compared to other black holes.
Our galaxy has very little gas at the center
And so, there's nothing really for the black hole to feed on.
Andromeda is charging towards us at almost 75 miles per second.
or 270,000 miles per hour.
Modern galaxies, including the Milky Way
have grown larger by cannibalizing smaller galaxies.
Most scientists agree that
the much anticipated merger between the Milky Way and Adromeda,
won't happen for at least three billion years.
QUASARS
The word 'quasar' stand for
'quasi-stellar radio source.'
which means star-like emitters of radio waves.
the word was coined when the quasar phenomena was still a mystery.
Now, we know they're not star-like at all.
In addition to emitting radio waves and visible light
quasars also give off ultraviolet rays, infrared waves, x-rays, and gamma rays.
BLAZARS
Its not eating very much, its going on a bit of starvation diet.
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