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Questions tagged [definition]

The tag has no usage guidance.

2
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0answers
36 views

Definition of the light that is projected by a celestial body/luminary [closed]

I'm creating an application which will simulate the light created by sun or moon on a 3d topographic map of Earth. Something like this: Is there a word or definition for this light/light projection?
2
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2answers
56 views

How far above the Earth's surface does interplanetary space begin?

The Kármán line is often cited as the beginning of outer space. The Voyager probes have identified the boundary between the heliosphere and interstellar space. Is there a agreed upon definition of ...
14
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3answers
2k views

Would an analogue of the definition for planets also work for moons?

This is a follow up question to What exactly is a "moon"? The conclusions I draw from James K's answer is that the IAU should define what a moon is. They haven't done so yet, but they should. The ...
6
votes
3answers
288 views

What exactly is a “moon”?

Recently some new moons of Jupiter were discovered. However the moons are pretty damn small indeed - only a few kilometers wide. That makes me wonder if they should even be called moons in the first ...
2
votes
1answer
154 views

Whats the name of this eye-shaped galaxy?

I would like to know the name of this eye-shaped galaxy: Strange eye-shaped galaxy has black-hole iris, Betsy Mason, 23.07.2009, Wired.com:
5
votes
3answers
545 views

So is there nothing like satellite anymore?

I just read this article. I don't know how credible it is, since I couldn't find any link to the original paper. But it says that pluto will be considered a planet again, along with more than 100 ...
7
votes
2answers
259 views

Do astronomers generally agree that the distinction between comets and astroids is not so clear?

edit: I just saw this tweet and find it incredibly relevant :) begin question: First see this answer and then consider if there are known, or likely to be identified cases of solar system bodies that ...
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0answers
54 views

How close must a full moon be to become a supermoon?

According to this answer there is a scale of super moons depending on how close the full moon(henceforth anti-sol) is to perigee. So how close to anti-sol does the moon's perigee need to be to be ...