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Home Q & A Board Science-Related Homework Help Physics
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doit_the_clown doit_the_clown
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7 years ago
How have the majority of extrasolar planets (planets orbiting stars outside our solar system) been found?

(a)   By observing their gravitational effect on the star, as the planets move around their orbits.
(b)   By direct photography with the new 8- and 10-meter diameter telescopes in Hawaii and other locations.
(c)   By observations of spectral lines of molecular oxygen, which is highly reactive and therefore exists in abundance only if produced continuously by life.
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Discovering the Universe

Discovering the Universe


Edition: 7th
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Only two things are infinite, the universe and human stupidity, and I'm not sure about the former.

Albert Einstein
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discovererdiscoverer
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doit_the_clown Author
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7 years ago
This site is awesome
alpheratz
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Smart ... Thanks!
smdavis
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2 hours ago
This helped my grade so much Perfect
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