These examples should make the accomplishments of sending people to the moon and back or sending space probes to the other planets dramatically clear. However, if we want to learn about the distant stars and galaxies, it should also be clear that we can't do so by going there or sending a space probe. The only way we can learn about the distant reaches of the Universe is to analyze the light these distant objects send to us across the unfathomable void of space. Click here to go to next section. Return to Spectroscopy Home Page.
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