Midterm Notes and Key Ideas/Concepts - Midterm notes and key ideas ● ● ● ● ● ● ● Predict how light moves near massive

Midterm Notes and Key Ideas/Concepts - Midterm notes and...

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Midterm notes and key ideas Predict how light moves near massive objects. (gravitational lensing) magnify warp multiply displace Explain how black holes are observed. black holes are detected when surrounding material such as particles and gas are pulled in by the black hole, forming a disk around it. The gas swirls around the black hole so quickly that they heat up and emit x-rays that we can detect from Earth Describe the content and history of the Milky Way. first, star clusters merged to form the bulge Second - halo Third - disk globular clusters(old stars, tightly bound) are located in the halo (outer ring) open clusters(young, loosely bound stars) are located in the disk the supermassive black hole is in sagittarius A Explain the evidence for dark matter. gravity of normal matter is not strong enough to form galaxies and complex structures places with a high concentration of dark matter bend light around it dark matter does not make up black holes Compare and contrast disk and elliptical galaxies.
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