As a red giant, the sun will have an angular size in Earth's sky of about 30 degrees. I am wondering what will sunset and sunrise be like?...and how long do you think it will take? What about the color of the sky?...would it be different?
2006-11-30 03:00:33 · 5 answers · asked by hunnk33 1 in Science & Mathematics ➔ Astronomy & Space
Actually, at our close range to the sun, it would be so bright that everything would be completely washed out. It would be blinding to even be outside. It is true that the photosphere will be cooler, but the sun will be so much larger that the total light we receive will be much, much more. As for sunset and sunrise, if I had to guess I'd say that they would take longer and it would stay bright for a long time after the sun goes down (and get brighter a long time before the sun comes up). This is all assuming that it hasn't swallowed the Earth yet, which it will do at some point.
2006-11-30 03:14:44 · answer #1 · answered by The Wired 4 · 0⤊ 0⤋
It takes one hour for the earth to rotate 15 degrees, so sunrise and sunset would take about 2 hours for the sun to go from just appearing over the horizon to being clear of it. Right now, the sun's angular size is about 1/2 degree, I think. That means it takes about 2 minutes for the same process now.
So would it be fair to say that we'd go from the crack of dawn to the creep of dawn?
2006-11-30 03:07:23 · answer #2 · answered by Ralfcoder 7 · 0⤊ 0⤋
As a red giant, the sun will be big enough to engulf the Earth. This will occur in orughly 5 billion years, so make your plans NOW.
2006-11-30 03:08:05 · answer #3 · answered by Anonymous · 0⤊ 0⤋
When the sun goes red giant, it's diameter will be wider than that of earth's orbit....probably Mars' orbit too.
2006-11-30 03:13:58 · answer #4 · answered by Anonymous · 0⤊ 0⤋
By then the earths seas, atmosphere and probably the earth itself will be vaporized so who cares.
2006-11-30 03:04:51 · answer #5 · answered by Gene 7 · 0⤊ 0⤋