Short Wave: The Mystery Of Dark Energy

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

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


Short Wave Podcast

It’s science for everyone, using a lot of creativity and a little humor. Join host Maddie Sofia for science on a different wavelength.

Science Topics
Astronomy, Physics
Middle School, High School
7th Grade, 8th Grade, 9th Grade, 10th Grade, 11th Grade, 12th Grade, Adults

What are you looking for?


Short Wave (NPR)

Website URL

Type of Resource


Assigned Categories