Hi, we're here from Curiosity.com to help you get smarter in just a few minutes.

I'm Cody Gough.

And I'm Ashley Hamer.

Today you learn about new insights into America's largest asteroid impact,

why birds sing, and why your bruises change color while they heal.

Let's satisfy some curiosity.

A giant asteroid devastated the East Coast of the United States 35 million years ago.

And a recent study used fresh dating techniques on the region to show just how devastating it was.

The study was published in June 2019 in the journal Meteoristics and Planetary Science and it focused on a

crater we only discovered in the 1990s thanks to a drilling project. I'm talking about the

Chesapeake Bay Impact Crater, which is a huge divot in the Earth about 25 miles across.

miles across.

It's the largest crater in the U.S.

and the 15th largest in the world.

While the crater remains hidden, its evidence is far-reaching.

After the asteroid hit, it threw off a huge layer of material that covers a zone

about 10 times the size of Texas.

This zone includes tectites,

which are natural glass that forms

after space rocks hit the earth,

and shocked Zircon crystals.

A science team looked at drilling samples from the crater and dated them with a new technique for the first time,

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