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Science Friday

Listening for the cosmic ‘dark ages,’ from the lunar far side

Science Friday

Science Friday and WNYC Studios

Natural Sciences, Wnyc, Science, Friday, Life Sciences

4.46.3K Ratings

🗓️ 23 April 2026

⏱️ 13 minutes

🧾️ Download transcript

Summary

The LuSEE-Night mission would place a small radio telescope on the far side of the moon to listen for signals of the cosmic "dark ages."

Transcript

Click on a timestamp to play from that location

0:00.0

Hi, I'm Iroflato, and you're listening to Science Friday.

0:07.2

In early April, all eyes were on the moon, right, with the lunar flyby of the Artemis

0:13.1

Space Mission, and they got an unprecedented view of the lunar far side.

0:17.8

But researchers are working to put eyes on the far side of the moon in another way

0:22.3

by delivering a tiny radio telescope there. It's called Lucy Knight, and joining me to talk about it

0:29.5

is Anja Slosar, science lead for the mission. Welcome to Science Friday.

0:35.0

Hello, thank you very much. Anja, describe this little radio telescope for me, if you will.

0:41.7

Okay, so we're putting like a small pathfinder radio telescope called Lucidite on the lunar far side.

0:48.4

And really, it's a pathfinder.

0:50.2

It's the simplest thing you can imagine that can receive radio signals from the outer space.

0:55.4

So people have been dreaming about putting a great telescope on the moon because moon has a special

0:59.7

property. Then on the far side of the moon, you're at the same time shield it from the earth

1:04.9

and shield it from the sun. And that's supposed to make it one of the best observatories for the

1:10.7

radio frequency observations

1:12.1

in the entire solar system. Okay. And especially so at the very low frequencies,

1:17.3

where basically observations from the ground are very, very difficult. If you go below 50

1:21.4

megahertz, observations for the ground, basically it's like looking up from the bottom of the

1:26.1

swing pool, Everything is blurred.

1:28.4

It's a total mess.

1:30.2

So I should not be picturing this big giant aricebo-type radio dish.

1:34.8

We're talking about a demonstration project, a little project, right?

1:39.0

Yeah, it's a little project.

...

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