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I'm trying to imagine what that might look like if you're on the surface of this thing looking up at the sky. The sun would be really close, comparatively, and
by douche 10y ago
I'm trying to imagine what that might look like if you're on the surface of this thing looking up at the sky. The sun would be really close, comparatively, and even as a red dwarf, rather than main sequence like our sun, it must take up a huge portion of the sky. I would assume, if the planet is tidally-locked, that the sun would pretty much always be at the same point in the sky, when viewed from the same location?
Fun to think about, anyway.
- cgriswald 10y agoWe don't have to think about it. We can do the math. The distance between the planet and the star is ˜7,000,000 km. The diameter of the star is roughly 1.5 * the diameter of Jupiter: 207525 km. The angular size of the star from the surface of the planet will be the arcsin of (207525 / 7*10ˆ6) or about 1.7 degrees. This is a little bigger than three times the apparent size of the full moon or the sun from Earth.
- douche 10y agoThanks!