-Dr. Arthur Holly Compton won the Nobel Prize for Physics in 1927 on his work about the scattering of high-energy photons by electrons. This is something very basic to most gamma-ray detection. Satellites provide an excellent platform from which to observe cosmic gamma-rays. When we examine our universe with gamma rays we can see things that we could never see with regular telescopes.
-On the quiz i missed one, which resulted in a 75%.
-I didnt see an activity on this one....
BLACK HOLES
-Black holes are so dense that light cant escape their gravity, and nothing can travel faster than light so nothing can escape from inside a black hole. A black hole excerts a lot of force on far away objects. Galaxy-mass black holes are found in Active Galactic Nuclei (AGN). These have the mass of about 10 billion to 100 billion solar masses.
-On the quiz i got one wrong out of 3 with a precentage of 67%
-In the activity you had to Choose the image that represents the result of a) our Earth, b) the Sun, c) a white dwarf, d) a neutron star, and e) a black hole as it would appear making a "dent" in space-time. Which i got 3 out of 5 right on it.
THE NATURE OF DARK MATTER
-Material called "dark matter" is material that does not emit sufficient light for us to directly detect it, yet there are a variety of ways that we can indirectly detect it. Astronomers all over believe that most of the universe is covered with this dark matter. We can tell that there is dark matter by its gravitaional pull on light and others.
- I did not see a quiz of an activity under this topic.
X-RAY TELESCOPES
-The first X-ray telescope used in astronomy was to observe the Sun, which was the only X-ray source in the sky producing a large amount of measurable signal. The first X-ray picture of the Sun, by a rocket-borne telescope, was taken in 1963. The first orbiting X-ray telescope flew on Skylab in the early 1970's and recorded over 35,000 full-disk images of the Sun. It was shown mathematically that a reflection off a parabolic mirror followed by a reflection off a hyperbolic mirror could lead to the focusing of X-rays.
-On the quiz i got 3 out of 4 which would be a 75%
-There also wasnt an activity on this one either.
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