1) How much higher/lower is the sun at noon on the summer solstice than on the equinox?
2) How much higher/lower is the sun at noon on the winter
solstice than on the equinox?
3) What's "Different" about Betelgeuse?
Thanks
2007-10-22 05:21:09 · 3 answers · asked by Grant 2 in Science & Mathematics ➔ Astronomy & Space
For your first two questions - go to the link attached. It describes it all far better than I can in this limited bit of space.
As regards Q3, there are a number of remarkable or different things about Betelgeuse. It is one of two first magnitude supergiants (the other being Antares); it is a semi-regular variable; and it's radius is 600 times that of the Sun.
2007-10-22 05:36:03 · answer #1 · answered by the_lipsiot 7 · 1⤊ 0⤋
Hi. Good answers! Betelgeuse is unique (as far as I know) in that it has a star orbiting WITHIN its atmosphere.
Edit. I have not been able to verify this, but read it several years ago. The outer atmosphere is a pretty good vacuum and the diameter changes dramatically over time. This "star" may be just a convective cell the nearly escaped.
2007-10-22 06:25:26 · answer #2 · answered by Cirric 7 · 1⤊ 0⤋
1 and 2 - 23.5 degrees
2007-10-22 06:20:24 · answer #3 · answered by Renaissance Man 5 · 0⤊ 0⤋