This week NASA astronomers noticed a gaping, black region on the sun, the so-called coronal hole.

The “hole” isn’t really a hole, but rather is a large region much cooler than the rest of the Sun. National Oceanic and Atmospheric Administration (NOAA) expects, the dynamics of the coronal hole were expected to speed up the solar winds, and so the agency warned of minor-to-moderate geomagnetic storms as a result, falling under the classifications G1 and G2 (on a scale that goes all the way up to G5).

According to the data of Insider, it’s the size of 20-30 Earths: /p>

“The current coronal hole, the big one right now, is about 300,000 to 400,000 kilometers across,” Alex Young from NASA Goddard’s Heliophysics Science Division told the outlet. “That is about 20-30 Earths lined up back-to-back.”

Importantly, there’s nothing to worry about when it comes to a coronal hole appearing in the Sun. It’s stunning to look at, and thankfully, it is only of scientific interest and has no effect on life on Earth.