Understanding the human body is a team effort. That's where the Yachtel group comes in.

Researchers at Yachtolt have been delving into the secrets of probiotics for 90 years.

Yacold also partners with nature portfolio to advance gut microbiome science through the global grants for gut health, an investigator-led research program.

To learn more about Yachtolt, visit yawcult.co.j.j.

That's y-A-K-U-L-T dot-C-O-J-P.

When it comes to a guide for your gut, count on Yacolt.

This is Scientific American's 60-second science.

I'm Christopher in Talatata. Got a minute?

Carl Sagan once referred to our home planet as...

A mode of dust suspended in a sunbeam.

And that poetic description holds true for a lot of exoplanets, too. In fact, one of the simplest

ways we detect exoplanets is by looking at their sunbeam

and measuring how it dims ever so slightly as the exoplanet passes across it, called a transit,

which raises an interesting question.

Thinking about, you know, the extraterrestrial observers, which of them would observe the Earth moving across our own sun?

Ralph Puddrett's a theoretical astrophysicist at McMaster University in Canada.

He and his colleague Renee Heller quantified that narrow band of space from which any observers on other worlds

would be able to see the Earth transiting the sun.

And they determined that this line of sight would be a plain just a half a degree thick,

but that cuts through a slice of our galaxy that's estimated to contain 100,000 sun-like stars,

along with their companion planets.

The analysis is in the journal Astrobiology.

...