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How would the composition of a planet affect how much light it blocked of its star when passing in front? And signal to noise ratios are presumably quite easy t
by gmjoe 8y ago
How would the composition of a planet affect how much light it blocked of its star when passing in front? And signal to noise ratios are presumably quite easy to simulate. So not really sure what's so hard about it.
- captaincrowbar 8y agoComposition determines density. A rocky planet would block less light than a gas giant planet of the same mass, because it would be denser and therefore smaller.
- gmjoe 8y agoBut does density have to do with anything Kepler measures? Since it only measures how much light decreases, I assumed it's only measuring planet size, and that we're totally ignorant about planet mass and density?