Help Shape the Future of Space Exploration

Join The Planetary Society Now  arrow.png

Join our eNewsletter for updates & action alerts

    Please leave this field empty
Multimedia IconMultimedia

Neil Gehrels and WFIRST—A Space Telescope for the 2020s

WFIRST Telescope

Air Date: 03/15/2016
Run Time: 35:30

Listen to the full show:

Or Download mp3


  • Neil Gehrels, Chief, Astroparticle Physics Laboratory, NASA Goddard Space Flight Center

Topics: mission status, events and announcements, Planetary Radio, ExoMars TGO, Mars, optical telescopes

Support Planetary Radio

NASA has given the go-ahead for creation of the Wide-Field Infrared Survey Telescope. It might help reveal the nature of dark energy and point the way to life among the stars. Europe and Russia are celebrating the ExoMars spacecraft now headed for Mars. Emily Lakdawalla tells us why. Spacewalks, re-entry...traveling in space is hard and dangerous! Bruce Betts tells a harrowing tale or two on this week’s What’s Up. Bill Nye is on the road this week.

WFIRST Telescope

NASA / GSFC / Conceptual Image Lab

WFIRST Telescope
Artist's concept of NASA's Wide-Field Infrared Survey Telescope (WFIRST).

Related Links:

Trivia Contest

This week's prizes are a lovely Planetary Radio t-shirt, a 200-point astronomy account, and an OK Go! t-shirt signed by Damian Kulash and Tim Nordwind.

This week's question:

How many science instruments does the ExoMars Trace Gas Orbiter carry?

To submit your answer:

Complete the contest entry form at or write to us at no later than Tuesday, March 22nd at 8am Pacific Time. Be sure to include your name and mailing address.

Last week's question:

Who made the second longest spaceflight, and how long was he or she up there on that single flight?


The answer will be revealed next week.

Question from the week before:

Who was the first person to do an EVA (extravehicular activity) in a spacesuit that did NOT have life support coming from an umbilical (but still had a safety line)?


Cosmonauts Yevgeny Khrunov and Aleksei Yeliseyev were the first to use portable life support systems in space, beating Apollo astronaut Rusty Schweikart by days.


No trivia contest spoilers please!

Leave a Comment:

You must be logged in to submit a comment. Log in now.
Facebook Twitter Email RSS AddThis

Planetary Radio Search

Planetary Defense

An asteroid or comet headed for Earth is the only large-scale natural disaster we can prevent. Working together to fund our Shoemaker NEO Grants for astronomers, we can help save the world.


Space in Images

Pretty pictures and
awe-inspiring science.

See More

Join The Planetary Society

Let’s explore the cosmos together!

Become a Member

Connect With Us

Facebook, Twitter, YouTube and more…
Continue the conversation with our online community!