Planets outside our solar system: how do astronomers know anything about them?

Have you ever wondered how astronomers know anything about planets orbiting other stars? How big are they? What are they made of? Do they have atmospheres? Here’s the best video I’ve ever seen on the subject. From NASA with Love:

 

 

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About Richard A Snow

I studied Economics at La Trobe University (getting a BEcHons and MEc). I was writing for newspapers, mostly on personal finance, from 1997 to 2006, part-time, while working as an Economist at Victorian Department of Treasury and Finance, and later as an Associate Lecturer at La Trobe university. I have a stock of older, published newspaper articles at http://richardsnownewspaperarticles.wordpress.com
This entry was posted in Planets, Richard Snow Writer, Solar system and tagged , , , . Bookmark the permalink.

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