09/21/2026
If you enjoy looking at clouds as much as we do, here’s a great way to turn that curiosity into science!
By taking photos of the sky at specific times, we can help scientists determine whether each pixel in a satellite image represents a cloud or clear sky. Your observations can also help scientists better understand the properties of clouds—and, when the sky is clear, the atmosphere and surface below.
Let's participate and help NASA scientists better understand our planet!
You can help improve NASA satellite data — just by taking photos of clouds! ☁️📸
From Sept. 15 – Oct. 15, join the PACE Clouds Challenge using the GLOBE Observer app.
Snap cloud photos as the PACE satellite passes overhead to support NASA’s efforts to better understand cloud detection. 🛰️
Anyone can participate — all you need is the app and the sky above you!
Learn more: https://go.nasa.gov/4ywHEdC