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8min chapter
Are implanted brain chips the future?
BBC Inside Science
Measuring Distances to Distant Galaxies
This chapter delves into the methods astronomers employ to measure distances to distant galaxies, highlighting techniques such as observing stellar movement in the Milky Way and using standard candles like exploding stars for calculations. It also discusses the significance of redshift in measuring the velocity of galaxies and how this phenomenon is affected by the expansion of the universe.
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