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If the distance between us and a star is doubled the apparent brightness is decreased by a factor of four true or false?
True!
What does the Doppler affect tell astronomers about a star?
The star attracts the planet; the planet attracts the star. As a result of the latter, the star changes position. If this change is such that the star moves away from us during one part of the planet's orbit, and towards us at another (or more generally, the star's speed towards us, or away from us, changes slightly), then this can be detected as a Doppler shift.
Why can the star Sirius be seen without a telescope?
Because it is bright but more importantly, it is relatively close to Earth - a mere 8.6 light years from us, which is close in star terms.
What star exploded a few years ago and could be seen from Maryland or East Coast of the US I distinctly remember seeing the sky light up at 1am ish and hearing about it on the radio a few days later?
It was not an exploding star.
What information do you need to determine your longitude?
The information you need is the degree's the earth has turned in so many hours and the time in your area <><><><><> You pick a star and measure its hour angle. You convert that to local mean time, and compare with a clock of known accuracy. The difference can then be translated into longitude. Note: It is best to pick a star near the celestial equator, so as to minimize error. The same thing can be done during the day - you just pick the Sun as your star.
What is the brightest star seen from southeast US?
The south star
Why north star important to the aborginal people?
If it's important to anybody, that's because it's a relatively bright star that always remains more or less in the same position, as seen by us.
What statement is true about a star with a greater shift in its spectrum than another star?
The star with the greater shift moves towards us, or away from us, faster.
Is our sun is the brightest star?
The sun is the brightest star as seen from Earth, but that is only because it is much closer to us than any other star.
If the distance between us and a star is doubled the apparent brightness is decreased by a factor of four true or false?
True!
Why does the sun appear larger than other star when seen from earth?
It's closer to us
True or false the us general in Korea wears four hats filling four us four star positions these are cdrunc cdrcfc cdrusfk the senior us military officer in Korea?
True
Is there a baby blue star?
YEP it's name MALGAN after me and my friend(true to us) :D
How does imaging determine how fast a distant galaxy is moving away from Earth.?
The star's spectrum is analyzed; certain lines in the spectrum, which have a fixed position, will change their position when the object moves away from us or towards us.
What does the Doppler affect tell astronomers about a star?
The star attracts the planet; the planet attracts the star. As a result of the latter, the star changes position. If this change is such that the star moves away from us during one part of the planet's orbit, and towards us at another (or more generally, the star's speed towards us, or away from us, changes slightly), then this can be detected as a Doppler shift.
What is the distance from earth to lyra constellation?
they need to be heard to be seen. they can be seen but not heard or they can be shone the light within us all for the constellation brings out the best in us looking up.............the answer is it is 1254564 away from earth to the nearest star in lyra
What does the red star on a 5 dollar bill mean?
The modern US five dollar bill (or note) does not have a red star on it. some older versions did carry a seal printed in red, but this would hardly be seen as a star.
