Exoplanets: Crash Course Astronomy #27
Exoplanets: Crash Course Astronomy #27
There may only be eight planets in our Solar System, but there are a whole lot more further out in the Universe. Here’s how astronomers know where they are.
Key Ideas
As this video progresses, key ideas will be introduced to invoke discussion.
Key Ideas
Think about the following questions as you watch the video
- 01:25 Why can’t we see planets that are orbiting other stars in the Universe?
- 01:53 What is reflexive motion?
- 02:45 What are exoplanets?
- 03:48 How did Swiss astronomers Michel Mayor and Didier Queloz find a planet orbiting a sun-like star?
- 06:08 How do we make sure that we know something is an exoplanet and not a star spot, a pulsating start, or a background star messing up the measurements related to the Doppler effect?
- 08:56 Exoplanets orbit what kinds of stars?
- 10:27 What are some of the things we need to know about Earth-like planets to determine whether or not they are habitable?