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	Podcast:		NHPR News Features
	Episode:		A Dartmouth Professor's Deep Dive Into How Galaxies Form Stars
	Category:		Government & Organizations
	Duration:
	Publish Date:		2015-03-27 15:41:45
	Description:		A Dartmouth astrophysicist is part of a team that’s been looking billions of years into the universe’s past – and they’ve found some clues that may explain why galaxies form the way they do . Ryan Hickox is an assistant professor of physics and astronomy. The findings of his team were published in the journal Nature . Ryan Hickox joined All Things Considered with more on the findings. Five billion light years away. That's almost half of all time in the universe. You're looking at what was at a time before there was even an Earth. Could you describe what you use to look out that far away and that far into the past, so to speak? Sure. To see an object that far away we need to use a range of powerful telescopes, to observe this particular galaxy at a range of wavelengths, not just in visible light that you can see, but also in infrared light, which is longer wavelength light more like heat, and also in ultraviolent light and even x-ray light, which is very energetic radiation. The
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