Hi, I'm Cody Gough.

And I'm Ashley Hamer.

We're from Curiosity.com, and we've got three stories to help you get smarter in just a few minutes.

Today we'll talk about the most famous image in astronomy,

the science of selfies, and do some myth-busting around exercise and

what makes your muscles feel sore. Let's satisfy some curiosity.

Cody, do you know what today is?

It is Tuesday.

It's the anniversary of the Hubble telescope going into space.

So tell me about the Hubble telescope,

because everybody's heard of it, but I don't understand the significance.

It's got such a story so it was the first space-based telescope that we ever had and on April 24th 1990

the Space Shuttle Discovery launched it into space, and it had a problem.

What kind of problem?

This is really what made it very famous at the time.

This $1.5 billion piece of equipment, the first images it sent down to earth were blurry because its primary mirror had a tiny, tiny little imperfection.

And so everything was blurry. and people were making fun of

NASA so much during this time there are all these late night comics and even I don't

know if you've watched the naked gun movies but they make a joke about Hubble there and NASA was kind of a laughing stock.

So in 1993 they sent up a fix which is basically just giving it a pair of glasses that could make it

see sharper images and it was fixed but it was really expensive to do right?

So at that time when NASA was a total laughing stock the director of Hubble

...