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-P. That's Y-A-K-U-L-T dot-C-O-J-P. When it comes to a guide for your gut, count on Yacult.

This is Scientific Americans' 60-second science. I'm Lee Billings. You got a minute?

In his 1941 short story, Nightfall, Isaac Asimov describes a planet called Lagash that resides

in a multi-star system. Constantly illuminated from all sides by its count-em, six suns,

Lagosch experiences dark skies for just a few hours once every 2,000 years.

In the story, the rare celestial alignment occurs and darkness descends for the first time

in living memory, at which point the inhabitants of Lagash go berserk and burn their cities.

Nightfall was sci-fi, but we now know the kinds of multistar planetary systems it describes

are real,

and more common than one's thought. For example, astronomers recently realize that a planet-hosting

star system has four suns, the second of its kind ever found. The finding is in the astronomical

journal. Our galaxy contains hundreds of billions of stars, and astronomers suspect planets accompany

almost all of them.

This latest work implies that about 4% of sun-like stars may exist in quadruple systems.

That's a lot of potential legations.

The system just found, called 30-Ari, is 136 light years from Earth in the constellation

Ares.

We had known of three stars there,

...