It's been more than a year since the first whole human eye transplant.

It's always been considered kind of the holy grail for vision restoration.

There was an exceptional amount of doubt and no one had any precedent for it. No one knew what was going to happen.

It's Friday, September 13th. Ooh, spooky. And this is science Friday. I'm Scifry producer Charles Berquist.

There was a lot of doubt in the scientific community around the first

transplant of an entire human eye.

Would it be viable?

Would it shrink significantly?

There were lots of questions because it had never been done before.

Now, a new paper in the journal Jama

outlines the successes of this transplant and what it could mean for the future of eye surgery.

But first, here's guest host Kathleen Davis with some of the biggest science news of the week.

Big news in the world of commercial spaceflight.

Early Thursday morning, two of the four crew members of SpaceX's Polaris Dawn mission

became the first civilians to complete of SpaceX's Polaris Dawn Mission

became the first civilians to complete a spacewalk.

Joining me now to fill us in on the details

and bring us up to speed on other top science news of the week

is my guest. Jason Din, climate editor at Atmas magazine

based in Washington, D.C. Jason, welcome back to Science Friday.

Thanks for having me.

Okay, so to start out, can you give us a quick refresher on the basics of SpaceX's Polaris Dawn Mission?

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