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Jack comments on Max Tegmark on our place in history: "We're Not Insignificant After All" - Less Wrong

18 [deleted] 04 January 2010 12:02AM

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Comment author: Jack 04 January 2010 06:00:54PM 0 points [-]

Stars are too bright and too far away and the ringworld too thin (at least I think there would be stability problems if they were built too wide, but I don't know enough). Worse, I thought the way we were trying to detect planets these days was by looking at the gravitational effect the planet has on the star. But wouldn't a ringworld balance out its own gravitation effect on the star?

Comment author: MatthewB 04 January 2010 08:47:04PM *  0 points [-]

The Kepler Observatory also detects planets by masking the light from the star and then looking for any bright spots (Coronal Masking).

Even more advanced telescopes will use this technique in combination with the gravity wobble. There are also diffraction and coronal masking.

http://www.iop.org/EJ/article/0004-637X/662/1/738/65461.web.pdf

http://spie.org/x24241.xml?ArticleID=x24241

why did I get down voted on that post?