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Makes me wonder how much of the day sky is taken up by the star during daytime. Would be quite the view at that distance.
by evv555 4y ago
Makes me wonder how much of the day sky is taken up by the star during daytime. Would be quite the view at that distance.
- appleflaxen 4y agoIt's a sphere next to a point source of light. So I'm gonna guess... half?
- wtetzner 4y agoThey didn't ask how much of the planet is covered in light. They mean how large does the star appear in the sky from the planet's surface.
- Someone 4y agoThe innermost of the planets is about 2.8 million kilometers away from a star with a diameter of 217,000 km, so the angle (in radians) would be about 217,000/2,800,000 = 0.0775 radians or about 4,4 degrees. The sun is about 30 arc minutes or half a degree, so this star would have about 9 times the diameter, or 80 times the area of our sun. (Double-check: this planet is about 1/50 as far from its sun as earth is from our sun, and its sun has about 1/7 the radius of our sun. That would give a rough estimate of the relative size of that sun in the planet’s sky of 50/7, so say 7 times as large as our sun is to us) I would call that large, but not enormous. (This ignores effects on perceived size of differences in the light spectrum and brightness of the two stars and differences between the atmospheres of this planet and earth)
- evv555 4y agoThat's roughly the size of Jupiter at a distance roughly 7 times that of the moon from Earth. At those distances you could probably see features of the star the same way we see craters on the moon.