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Stars Home Astronomy
Compared to the size of the Sun, stars of all types range from:?
I'm helping my mom with this Astronomy class take home exam and its a pain, We have chapter notes/lecture notes and still can't come up with a reasonable answer to the questions. So i'm asking for a little help from all those smart people out there. Would be of good benefit. thank you very much.
a. 0.1 to 10 solar radii
b. 0.5 to 50 solar radii
c. 0.01 to 1000 solar radii
d. 0.08 to 8000 solar radii
You have chapter notes and lecture notes, and you still can't find the answer to this very basic question. I guess searching online for a few seconds would be too hard.
The smallest star known so far is OTS 44, a brown dwarf at about 0.013 solar radii.
And the largest known star is VY Canis Majoris at about 1800-2100 solar radii.
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How to Buy a Telescope : Telescope Accessories: Planisphere
Astronomy Take-Home Pretest Help?
an explorer notes that a star with DEC = -42 degrees passes directly overhead. What is the explorer's latidude here on earth?
please a little extra explanation would be very useful
From http://en.wikipedia.org/wiki/Declination:
* An object on the celestial equator has a dec of 0°.
* An object at the celestial north pole has a dec of +90°.
* An object at the celestial south pole has a dec of −90°.
-Declination is South Latitude.
Since it went "directly overhead," -42 Dec = 42° South Latitude.
hey – this google sky sounds like a cool thing to see on my mac at home! This astronomy post seems like a strange coincidence considering precisely 2 minutes ago I now mooched off an astronomy picture from nasa for my profile/avatar picture
You unquietness – I can certainly understand. I feel the same way at times. But w.r.t to the natural expectation that humans generally have “everything must have a meaning, all this must have some higher purpose, one that I can live with”. It sounds so naturally true – but I wonder if it is really a ruse, a mirage. For one, isn't it at the root of the need for religion and God
?
classic superstition: when new information is gained through rational means, the superstition is just "reinterpreted"