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Astronomy

Beta Q&A site for expert and amateur astronomers and astrophysicists

Announcements

17  
The proposed description of this site is quite weak and doesn't provide any real direction. Personally, I think amateurs (and their equipment) have to be explicitly included, because astronomy, perhaps more than any other science, relies on amateurs for observational data and other input. A great example is the list of observatories, many amateur, maintained by the IAU Minor Planet Center at cfa.harvard.edu/iau/lists/ObsCodesF.html - mine is code J58. While amateur astronomers represent a wide spectrum of interests, the top end certainly overlaps the professional arena. – Tim Long May 27 '10 at 15:36
9  
I think the question of whether spaceflight and space exploration are on- or off-topic needs to be explicitly incorporated into the charter. The overlap between "people interested in astronomy" and "people interested in spaceflight" is very large, but not necessarily 100%. – Larry OBrien May 29 '10 at 18:37
6  
There may be three populations of questions here, Professional Astronomy and Astrophysics, Practical Amateur Astronomy and Space Flight and Exploration. – Chris Rowland May 31 '10 at 7:37
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4
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1
answer

Astronomy: How long before beta?

may 30 at 23:43 Dori 678
4
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2
answers

Spaceflight: On or off topic

may 10 at 19:10 Tigran Khanzadyan 206

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This proposal is now in the Beta phase — example questions are locked!

188 Example Questions (10 closed)

active oldest votes
up vote 21 down vote
I want to observe and time the upcoming occultation of 27491914 by (80) Sappho. Are there any last-minute observations to improve the predicted track?
added by WikiSpeedia hang-around May 27 '10 at 10:53
link
(2UCAC 27491914 by (80) Sappho: asteroidoccultation.com/2010_05/…) – WikiSpeedia hang-around May 27 '10 at 10:59
up vote 21 down vote
I want to help detect and track Near Earth Objects (NEOs), what can I do?
added by therefromhere May 30 '10 at 14:43
link
up vote 21 down vote
What can I do to minimize the effect of light pollution?
added by ChrisF May 31 '10 at 18:25
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Near duplicate: area51.stackexchange.com/proposals/51/astronomy/… – WikiSpeedia hang-around May 31 '10 at 22:25
@Peter - not quite. That question asks about combating it in general, this one is about coping with it. Both could be valid questions though. – ChrisF May 31 '10 at 22:31
up vote 20 down vote
What are the current established techniques to find planets around other stars?
added by Aim Kai Jun 1 '10 at 6:53
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Duplicate question area51.stackexchange.com/proposals/51/astronomy/… – dagorym Jun 1 '10 at 15:43
up vote 20 down vote
Why does the Moon appear larger on the horizon than in the sky?
added by Corey, edited by WikiSpeedia hang-around Jun 4 '10 at 19:58
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up vote 12 down vote
Is it possible to measure the precession of an exoplanet by direct detection?
added by dswan Jun 1 '10 at 10:56
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up vote 11 down vote
Can amateur astronomers still make important discoveries?
added by Robert Harvey Jun 1 '10 at 21:32
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up vote 8 down vote
I got a [Galileo] telescope but everything appears backwards, is it broken? How do I fix it?
added by rlb.usa Jun 3 '10 at 18:21
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Working with (and maintaining) the tools of your trade better be on topic. – Robert Harvey Jun 4 '10 at 4:58
up vote 6 down vote
How old is the universe? How do we know it?
added by Juan Manuel May 28 '10 at 2:56
link
another reason why astronomy and physics SE's should be linked – Tobias Kienzler May 28 '10 at 6:06
I think astrophysics is a legitimate overlap – cindi Jun 8 '10 at 17:12
This question could also be asked at Popular Natural Sciences. – Tobias Kienzler Jun 23 '10 at 14:07
up vote 5 down vote
Why would NASA build a 2.5 m telescope in the back of a 747 (SOFIA project)? What advantages does it provide?
added by dagorym, edited by WikiSpeedia hang-around May 31 '10 at 19:13
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up vote 4 down vote
How do I get started fighting light pollution in my area/neighborhood?
added by WikiSpeedia hang-around May 27 '10 at 15:03
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Political activism is rather off-topic. – Tadeusz A. KadÅ‚ubowski May 27 '10 at 18:13
1  
But light pollution only affects astronomers and stargazers, so therefore it is absolutely relevant. – Arlen Beiler May 27 '10 at 21:37
would probably be voted to close as too argumentative. but maybe meta-astro, then – Tobias Kienzler May 28 '10 at 6:04
up vote 4 down vote
How can I observe the Sun with my telescope?
added by Mehper C. Palavuzlar, edited by WikiSpeedia hang-around Jun 3 '10 at 16:18
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Another form for this question: Are there any extra telescope apparatuses to observe the sun? – Mehper C. Palavuzlar Jun 3 '10 at 11:52
up vote 4 down vote
Why does [planet] appear [color] ?
added by rlb.usa Jun 3 '10 at 18:19
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up vote 4 down vote
What's the Best reference for supernova search?
added by Arvinje Jun 4 '10 at 9:56
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up vote 3 down vote
How can I tell how far away an object is using a basic telescope?
added by Lucas McCoy May 27 '10 at 4:10
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up vote 3 down vote
How can I best photograph the night sky in an area with bad light pollution?
added by Rog May 27 '10 at 7:21
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This is probably more appropriate for area51.stackexchange.com/proposals/1265/… – Helen Jun 10 '10 at 18:49
up vote 3 down vote
What causes millisecond pulsars to speed up?
added by dagorym May 28 '10 at 16:12
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up vote 3 down vote
What is the Kuiper Belt and how is it different from the Oort Cloud?
added by dagorym May 31 '10 at 15:07
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up vote 3 down vote
How do the "hot Jupiter" planets get so close to their host star?
added by dagorym Jun 1 '10 at 3:52
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up vote 3 down vote
What do the different supernova types (Ia, Ib, II, etc) mean?
added by dagorym Jun 1 '10 at 18:14
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up vote 3 down vote
What kind of telecommunication systems do the astronauts use in space?
added by Mehper C. Palavuzlar Jun 3 '10 at 11:57
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@mehper Assuming you mean Earth-to-space communications, this is an interesting question in general, and I'd say vaguely on-topic here because astronomers don't just use telescopes in the visible spectrum; an understanding of other electromagnetic communications applications (especially those pointed at the Earth) may be useful. – sblair Jun 4 '10 at 23:14
up vote 2 down vote
Why does red shift imply the Big Bang? Are there other possible conditions that could lead to the current expansion?
added by Scott Wisniewski, edited by WikiSpeedia hang-around Jun 1 '10 at 13:35
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up vote 2 down vote
When is the best time to see [name of star]?
added by Lucas McCoy May 27 '10 at 4:11
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The question doesn't give a location...So it's too ambiguous – Scott Wisniewski May 27 '10 at 4:46
The location would have to be part of the answer. It is answerable for somebody in any location - unlike the where can I buy X locally questions. – Martin Beckett May 27 '10 at 14:48
The question is poorly worded but that doesn't make it off topic. The asker would either be encouraged to clarify the question (which in itself would teach them something) or the answer could explain why that is location dependent. Or, a member in good standing could eit the question to add the asker's location. Either way, this is core astronomy and could yield some interesting answers. Example, why stars are better observed near the meridian, diurnal motion, changing seasons, and so on. – Tim Long May 27 '10 at 14:54
up vote 2 down vote
What causes a solar eclipse?
added by Juan Manuel May 27 '10 at 13:34
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up vote 2 down vote
What is the connection between galaxy shapes and dark matter?
added by Tobias Kienzler May 28 '10 at 6:08
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up vote 2 down vote
What equipment should I use to observe lunar occultations with a time resolution of 1 millisecond or better?
added by WikiSpeedia hang-around May 28 '10 at 7:35
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(Lunar occultations: en.wikipedia.org/wiki/…) – WikiSpeedia hang-around May 28 '10 at 7:39
up vote 2 down vote
What's the best viewing location within 100 miles of Tucson, AZ?
added by Larry OBrien May 29 '10 at 0:45
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I'm going with "too localised" for this one. – ChrisF May 29 '10 at 20:49
But the problem is that this is the place to ask such questions. – Arlen Beiler May 31 '10 at 1:56
Personally very interested in this being answered! If the site were to include "amateurs" like myself, having info on good places to start out with would help. – Charlie Jun 16 '10 at 22:50
up vote 2 down vote
How many moons are there in our solar system?
added by Juan Manuel, edited by WikiSpeedia hang-around May 31 '10 at 18:57
link
2  
Although a good question - the answer will change with time as more moons are discovered. – Aim Kai Jun 10 '10 at 8:35
Are you serious? In any case, the answer can be updated or a new one will be added – Juan Manuel Jun 10 '10 at 11:27
up vote 2 down vote
How can I accurately polar-align my telescope ready for CCD imaging?
added by Tim Long May 30 '10 at 12:36
link
up vote 2 down vote
What are the different populations of Kuiper belt objects and how do they differ?
added by dagorym May 31 '10 at 15:08
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