Axios

When this year's harvest moon rises later this week, it will also be a "supermoon," meaning it may appear slightly larger and brighter.

Why it matters: It will also be the last supermoon of year, coming after the buck supermoon in July and the sturgeon and blue supermoons in August.

NASA's OSIRIS-REx mission to sample an asteroid brought its rubbly haul back to Earth Sunday.

Why it matters: Scientists hope to use high-powered lab equipment to study the sample of asteroid Bennu to learn more about how our solar system has evolved over billions of years.

The breakup of a supercontinent 1.3 billion years ago may have moved rare pink diamonds from the depths of Earth to the surface, researchers report.

Why it matters: The key role of continent movements in producing pink diamonds could point to other caches of the valuable gems.