How far apart are galaxies?

The wattage of the Pulsating stars can be found by observing the time lapse between each dim and sparkling of a star. This method is used to measure the distances across the Milky way galaxy. 

There are tiny galaxies (smudges) which appear to be smaller, even if we use huge telescopes to view them. Astronomers can find out the approximate distance to these galaxies by watching for the supernovae.

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http://www.wonderwhizkids.com/index.php/our-universe



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