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Why do astronomers say that looking at constellations is looking into the past?
Wiki User
∙ 15y ago
Because of the speed of light. A light year is a term of measurement of distance, not time - i.e. the distance that light can travel in one year. Light travels at 299,792,458 metres per second - almost 3 million kilometres a second - therefore in one year it would travel a collosal distance - near 94 million million kilometres. When astronomers say a planet is 400,000 light years away, what we see of this planet happened 400,000 years ago since the light is only reaching us now. It would be another 400,000 years before we see that planet as it is today.
Wiki User
∙ 15y ago
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Astronomers divide the sky into what?
You might say there are either 88 or 89. There are 88 constellations, but one of them is split in twain, and sometimes the pieces are considered separately.You might say there are either 88 or 89. There are 88 constellations, but one of them is split in twain, and sometimes the pieces are considered separately.You might say there are either 88 or 89. There are 88 constellations, but one of them is split in twain, and sometimes the pieces are considered separately.You might say there are either 88 or 89. There are 88 constellations, but one of them is split in twain, and sometimes the pieces are considered separately.
How many constellations are in the southern hemisphere?
52, and there is also 5 constellations on the Celestial equator, it is don`t class as northern or southern hemisphere constellations.
Why do people make up stories to go with the constellations?
i say it's kinda like a form of religion. think of the greek gods &such
When were star constellations first discovered?
It is impossible to say when star constellations were "first discovered".The stars in the heavens have been recorded since man first learned to write.There are many instances of the stars being recorded in the Christian Bible and Holy books of other religions
What is the name of big deeper in Orion constellation?
Astronomers call that shape the Pot because it looks like aPot or a dipper as you say.
How have past astronomers learned about Neptune?
Jasleen Kaur Dhunna sucks!. that's all im going to say!
Astronomers divide the sky into what?
You might say there are either 88 or 89. There are 88 constellations, but one of them is split in twain, and sometimes the pieces are considered separately.You might say there are either 88 or 89. There are 88 constellations, but one of them is split in twain, and sometimes the pieces are considered separately.You might say there are either 88 or 89. There are 88 constellations, but one of them is split in twain, and sometimes the pieces are considered separately.You might say there are either 88 or 89. There are 88 constellations, but one of them is split in twain, and sometimes the pieces are considered separately.
Why are constellation useful for the sky?
they help us "map out" the sky, and almost like sectioning off places so astronomers can say, "the star we are looking at resides in the Draco constellation" and all the other astronomers can have an understanding of the general area they should be looking at
Are all the stars that you can see in a constellation?
Yes. Every visible star is a member of one or another of the 88 official constellations. Some of the fainter ones don't really contribute much to the pattern, though.The 88 constellations take up the entire sky, so it's no place for a star to be that isn't in a constellation. There's a difference between what astronomers mean when they say "constellation" and what most people interpret it as meaning. The name for the common meaning that astronomers use is "asterism" ... a group of stars that make a pattern of some kind.
How many constellations are in the southern hemisphere?
52, and there is also 5 constellations on the Celestial equator, it is don`t class as northern or southern hemisphere constellations.
What is a constellation and how many constellations cover the entire sky?
Roughly speaking, a constellation is a direction in the sky. The introductory paragraph of the Wikipedia summarizes the concept quite well: 'In modern astronomy, a constellation is an internationally defined area of the celestial sphere. These areas are grouped around patterns that represent the shapes that give the name to the constellations. When astronomers say an object is "in" a given constellation, they mean it is within the boundaries of one of these defined areas of sky, as the patterns may have several variants in its representation.' In modern astronomy, there are 88 or 89 constellations, depending on how you count.
Do you drive past somethingor drive passed something?
Passed is the past tense of the verb pass. You're not looking for a verb here - you're looking for a word to tell where you drove. So you say "drive past". "Bob passed by us" - passed is a verb. "We drove past Bob." - past is a preposition
Is there a past tense for resolute or can you you say but has resolute to do so instead of resoluted?
Resolute is not a verb, so no there is not a past tense. I think the word you are looking for is resolve
How do astronomers study the components of the universe?
Astronomers use an auditory up on a hillside, and away from cities and pollution. So what i'm trying to say is that astronomers use an auditory to study the components of the universe.
What percentage of asteroids are not in the asteroid belt?
Well, since the universe is kind of huge and scientists and astronomers are not even cose to getting a bit past Pluto I'm gonna go out on a limb and say A TON (screw percntages).
Past participle of say?
Present: say past: said Past Participle: said
Is it grammatically correct to say I retrospect?
No, the correct phrase is "in retrospect." "In retrospect" means looking back on a past event or situation with understanding gained from later knowledge or experience.
