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Just twenty years have passed since the discovery of the first planet beyond the Solar System, and over 5000 exoplanets have been found. The limit on detection has reached Earth-like planets and some are habitable. Studying exoplanets recasts our view of our own Solar System. In no more than 750 words, address the following questions about planets near and far.
I put Answer Examples and picture give you similar ideas and you put source on each question?
1) What are the two main, indirect methods for finding exoplanets?
Answer Example – Doppler effect (planet motion caused by the star) and Eclipses (planet passes in front of and dims star)
2) Why is it so difficult to see exoplanets directly in an image?
Answer Example – Imaging (see planet by reflected light from star) – Planets are much fainter than their parent star, challenging to image They are billions of times fainter than the stars th

ey orbit; think of trying to see a firefly next to a stadium floodlight! Why are these pictures possible? Image contrast 10 times better at near infrared than at optical wavelengths with special observing techniques used to block the star’s light. and were repeated over years, confirming the planetary motion and orbit.
3) What are some similarities or differences between our Solar System and new, distant planet systems? Provide at least one similarity and/or difference.
Answer Example – see the picture (hab zone other systems.png i attach
if you want info – Teach Astronomy Textbook Ch. 9: “How Planetary Systems Form” see especially: Extrasolar Planets, Direct Detection of Extrasolar Planets, Doppler Detection of Extrasolar Planets, and Transit Detection of Extrasolar Planets (http://www.teachastronomy.com/)
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