Saturday, February 18, 2012

If stars that are part of a constellation die out, then wouldn't we lose our constellations eventually?

I know that more stars do form but they aren't going to form in the exact same pattern as the ones that do die out. So what happens when some or all of the stars of our known constellations are gone?If stars that are part of a constellation die out, then wouldn't we lose our constellations eventually?I guess we'll still use the prominent stars for navigational purposes, and just draw new constellations in the shifting patterns of space. After all, the constellations just help us read the sky.



Even when the stars have died (some may already have) there'll be hundreds (thousands?) of years worth of light beaming towards us through space, so we'll still see them for a while.



If our sun died we wouldn't know for 8 minutes... think how long it must be for the fainter stars we can with the naked eye.



Just as we retain the sky charts of ancient civilisations, future humans will presumably keep records of our interpretations.If stars that are part of a constellation die out, then wouldn't we lose our constellations eventually?
Even if some stars are dying at this very moment, We wont lose their light for thousands of years, since they are very far away, so we still have a lot of time.



But in the future, they will have to make new constellation, after all constellation help us read the sky, they are like a map to astronomers. So they are very important. We'll Just have to make new ones.If stars that are part of a constellation die out, then wouldn't we lose our constellations eventually?Stars have very long lifetimes, of the order of millions to billions of years, so the chnaces of them "dying out" are very slim. A much more important factor is that all the stars are moving in space, so that their positions relative to each other are constantly changing. Ten thousand years in the past or future the sky would look quite different.If stars that are part of a constellation die out, then wouldn't we lose our constellations eventually?
The visible stars in the sky "die out" (supernova) at the rate of 1 or 2 every 100 million years or so. It would take 5 billion years before even 2% of the stars die out. Long before that, our own sun will expand and boil off the oceans.If stars that are part of a constellation die out, then wouldn't we lose our constellations eventually?Star maps have to change. But that's something that'll happen in billions of years. Northing we have to worry about.

No comments:

Post a Comment