Questions tagged [stars]

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5
votes
1answer
183 views

Explain this light and wavelength graph

Would someone please explain this graph. I am not an expert and with my limited understanding of physics, I am unable to correlate this graph between the light received with its wavelength. I don't ...
3
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0answers
123 views

Stars visible during ascent?

Did any shuttle astronaut indicate at what altitude they were first able to see the stars during an ascent to orbit at sunrise? Yeagar seeing the stars in The Right Stuff. For illustration purposes ...
3
votes
0answers
43 views

Does reflected sunlight from the ISS prevent astronauts from seeing the stars during an EVA?

I'm assuming during an EVA when an astronaut is facing the station reflected sunlight reduces an astronaut's dark adapted vision to the point they can no longer see the stars until either the station ...
4
votes
2answers
186 views

Are there parts of space in which no light would make it to an observer?

There are stars here, there, and "everywhere" - but are there places in space that are so far from stars that no light reaches?
1
vote
1answer
129 views

Looking out the window of a subluminal spaceship, what would be the sight?

How would a star sky look for the observer flying on a subluminal spaceship (i.e., with the velocity close to the velocity of light)?
1
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2answers
55 views

How do scientists determine how big a certain star is? [closed]

I was just wondering, many people say that there are stars that are waay bigger than our sun and in some videos they even try to say the exact diameter of the Sun, but I was wondering: How can ...
2
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0answers
23 views

What are Other Galaxies made of? Are they different than our own? [closed]

Does NASA use a spectrograph to see what other Galaxies are made of? If they do has NASA discovered other Galaxies that are made of different Elements than our own?
0
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0answers
27 views

Stars properties evolution and the sun [duplicate]

Is it possible that you can touch a star in outer space without getting burned or hurt?
1
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1answer
57 views

Was that the space station I saw last night? [duplicate]

I was out on my front porch last night around 9pm looking up at the sky and noticed what I first thought was a star in the Eastern sky. It twinkled just a little too much for a star so I thought maybe ...
1
vote
1answer
91 views

Is there anything common between all Gliese named stars?

As Gliese 436, and Gliese 581 etc these all are present in different constellations, also they are both at different distances from the Earth and both are discovered by different sources, but why all ...
-5
votes
1answer
360 views

Why are scientists considering the ETI explanation for Tabby's star?

When Yale astronomer Tabetha Boyajian located star KIC 8462852 ("Tabby’s star"), some U.S. scientists proposed artificial megastructure(s), such as a Dyson sphere/swarm, instead of discussing more ...
0
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1answer
72 views

Can an Earth like planet support life by building a Dyson Sphere across a White Dwarf? [closed]

(Hypothetical Concept) But is it possible to depend on a white dwarf as our power source? Provided we harness its 99% of energy? Can life be sustained?(If it is possible we can easily colonize an ...
1
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0answers
103 views

Which one is older light or stars? [closed]

I kind of feel that light is older than stars. But is there any scientific theory or hypothesis on it?
8
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4answers
4k views

Is it possible to touch stars with our bare hands?

Well I'm new to Space SE and have gone through many questions but I couldn't help but notice that is it even remotely possible that one can touch the stars without burning him/her self ? Is there any ...
5
votes
1answer
209 views

What determines if a star tracker blends two stars that are close to each other?

If two stars are very close to each other, a star tracker could identify the pair as a single star, with a magnitude and position different from both stars. This obviously impairs the software's ...
0
votes
2answers
157 views

Copernican principle based question about ET

As mentioned, I'm following the Copernican principle for this line of questioning. Yes I've considered and read many other possibilities, but this question is for Copernican-style answers ONLY. Your ...
1
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0answers
62 views

Escape velocity of Alpha Centauri B: What is it? [closed]

So, assume that at one point in the distant future, humanity has a docking facility/military observation post in orbit around the star of Alpha Centauri B for.....well, military purposes, which could ...
2
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0answers
56 views

how many stars have been recognized? [closed]

I have wanted to ask this question for ever. I realize that the numbers are still ticking up but i just want a number from last year or something.
0
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1answer
153 views

If a telescope detects death of a star which is 1 million light years away today, doesn't that mean it's dead 1 million years ago? [closed]

I'm guessing as if its an optical reflecting telescope. How in general does NASA and other research centres detect far away bodies? What telescopes do they use, and in general, wouldn't the event be ...
0
votes
1answer
490 views

Is there any space objects database? [closed]

I wonder if is there any databse about space objects, giving information about types and may be relative positions of objects in space. I'm asking this because my company aims to develop a software ...