SPACE WEEK: The Mystery Of Dark Energy : Short Wave It's Space Week on Short Wave! Today, an encore of our episode on dark energy. This mysterious energy makes up almost 70% of our universe and is believed to be the reason the universe is expanding. Yet very little is known about it. To figure out what we do know — and what it could tell us about the fate of the universe — we talk to astrophysicist Sarafina Nance.
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SPACE WEEK: The Mystery Of Dark Energy

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SPACE WEEK: The Mystery Of Dark Energy

SPACE WEEK: The Mystery Of Dark Energy

SPACE WEEK: The Mystery Of Dark Energy

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  • <iframe src="https://www.npr.org/player/embed/906835155/907117959" width="100%" height="290" frameborder="0" scrolling="no" title="NPR embedded audio player">

Observations of the GOODS-North field are used to try to understand dark energy. P. Oesch/University of Geneva; M. Montes/University of New South Wales/ESA/NASA hide caption

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P. Oesch/University of Geneva; M. Montes/University of New South Wales/ESA/NASA

Observations of the GOODS-North field are used to try to understand dark energy.

P. Oesch/University of Geneva; M. Montes/University of New South Wales/ESA/NASA

In this encore episode and Day 1 of our space-themed week, we explore dark energy. This mysterious energy makes up almost 70% of our universe and is believed to be the reason the universe is expanding. Yet very, very little is known about it. To figure out what we do know — and what it could tell us about the fate of the universe — we talked to astrophysicist Sarafina Nance. She studies cosmology, a field that looks at the origin and development of the universe.

Read more about dark energy on NASA's website.

Follow Maddie on Twitter @maddie_sofia.

Email the show your questions about the mysteries of our universe — we're at shortwave@npr.org.

This episode was produced by Rebecca Ramirez, edited by Geoff Brumfiel and fact-checked by Emily Vaughn.