astronomer's spectroscope
2006-10-11 05:07:15 · 5 answers · asked by Anonymous in Science & Mathematics ➔ Astronomy & Space
Depends on how far away it is. Astronomical distances are either specified in A.U. (93 million miles) or light years. If in light years, it is really easy.
Something that is 300 light years away will take 300 years for the light to reach Earth for detection.
2006-10-11 05:09:44 · answer #1 · answered by Puzzling 7 · 0⤊ 0⤋
It deponds on the distance between the star and the position of ur telescope, bcoz light travels almost at the same speed in all the media and hence velocity is not a major factor(It may matter if u r concerned with 10^-5 second) and by the formula s=ut+1/2at*t, u can see that with the increase in the distance time also increases.
2006-10-11 05:13:37 · answer #2 · answered by Enrique 2 · 0⤊ 0⤋
It depends on where your star is and where your spectroscope is. I'm going to assume that the only location for your spectroscope is here on Earth.
If you are talking about our beloved star, then about 8 minutes and 19 seconds.
If you are talking about stars in our galaxy, then anywhere from 4 years to thousands of years.
If you are talking about stars from other galaxies, then anywhere from thousands of years to billions of years.
2006-10-11 09:42:47 · answer #3 · answered by Telesto 3 · 0⤊ 0⤋
It depends on how far away the star is.
For the nearest stars, it takes about 4 years. For very distant stars, it takes billions of years.
For most stars in the Milky Way, it takes a few thousand years.
2006-10-11 05:44:40 · answer #4 · answered by cosmo 7 · 0⤊ 0⤋
It would depend on the distance of the star from the spectoscope. Is the spectoscope on earth or onboard a satellite/telescope in outer space? Too many variables to consider. Your question is too vague.
2006-10-11 07:49:34 · answer #5 · answered by legalbambino 2 · 0⤊ 0⤋