BRENT: Earlier this year, NASA released this stunning new image of the Whirlpool Galaxy.
But don’t be fooled by its beauty – this image has been manipulated by scientists to look different than how the galaxy actually appears in reality. But for good reason.
Astronomers look at the sky with different instruments because in the grand scheme of things, the light that human eyes detect is only a small amount of the radiation out there, so they use these instruments to pick up the rest.
And the more they can see of the cosmos, the more they learn and understand about how it works.
To give you a better picture of how this works, we’ve broken down the image above into its components to describe how each one helps astronomers.
Humans see only a small part of what scientists call the electromagnetic spectrum. This spectrum encompasses all forms of radiation – energy that moves through space. And the term “visible light” refers to the different colors that humans see every day.
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