© 2022 Kansas City Public Radio
NPR in Kansas City
Play Live Radio
Next Up:
0:00
0:00
Available On Air Stations

Thirty years after first exoplanets found, NASA is at 5,000 and still counting

Ways To Subscribe
Artist’s impression of exoplanet orbiting two stars
NASA, ESA, and G. Bacon
/
ESA/Hubble
NASA confirmed that it identified its 5,000th exoplanet last month.

Last month, NASA announced that it had identified 5,000 different exoplanets, planets outside of our solar system. Some of these worlds are unlike anything you'll find in our little corner of the universe.

There are hundreds of billions of galaxies — some experts even estimate trillions — so finding 5,000 planets within all those may not seem like much.

Eric Mamajek would disagree. A deputy program scientist with NASA's exoplanet exploration program, he says it wasn't that long ago that we weren't even aware of these celestial bodies.

"Just 30 years ago, we didn't know of any exoplanets," Mamajek explains. "We didn't even know if there were planets outside of the solar system orbiting other stars."

Mamajek believes it's now possible that within the next generation we may be able to find signs of life on exoplanets orbiting other stars.

Studying exoplanets gives us the opportunity to learn about worlds that are unlike anything we have here in our solar system. One of Eric's favorites, though he says it has not been 100% confirmed, is known as J1407b. He calls it the "white whale" that NASA has been following for years.

"It looks like a huge system of rings, but about 200 times larger than Saturn's rings," Mamajek recalls. "And, it hasn't passed in front of its star again... So, this planet is either on a really wide orbit or maybe it was unbound to the star to begin with. It may be just freely floating from space, we don't know."

Stay Connected
When I host Up To Date each morning at 9 a.m., my aim is to engage the community in conversations about the Kansas City area’s challenges, hopes and opportunities. I try to ask the questions that listeners want answered about the day’s most pressing issues and provide a place for residents to engage directly with newsmakers. My email is steve@kcur.org.
As Up To Date’s associate producer, I construct daily conversations that give our listeners context to the issues of our time. I strive to provide a platform that holds those in power accountable, while also spotlighting the voices of Kansas City’s creatives and visionaries that may otherwise go unheard. Email me at zach@kcur.org.