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A crucial building block of life exists on the asteroid Ryugu

Uracil, a component of RNA, was found in a sample collected by Japan’s Hayabusa2 spacecraft

A photo take of the asteroid Ryugu. A light gray circular shape in the center on a deep black background.

One of life's crucial building blocks has been identified on the asteroid Ryugu, shown in the photo taken by Japan's spacecraft Hayabusa2.

Hayabusa 2/JAXA

By Allison Gasparini

- More than 2 years ago

Uracil, a building block of life, has been found on the asteroid Ryugu.