Noctilucent clouds usually form close to the poles, but in recent decades, they’re being spotted closer to the Equator ...

NASA wants your photos of a specific type of cloud in order to better understand Earth’s atmosphere. This summer, NASA is inviting skywatchers to participate in a citizen science project called Space ...

Noctilucent clouds, Earth's highest clouds, shine blue in the twilight sky from late May to August in the northern hemisphere ...

The fleeting glow of noctilucent clouds is once again making its appearance in Earth’s upper atmosphere, signaling the start ...

The best time to see noctilucent clouds is on clear nights between late May and mid-August, about 90 to 120 minutes after ...

Artist concept highlighting the novel approach proposed by the 2025 NIAC awarded selection of Photophoretic Propulsion ...

It was the highest-recorded volcanic plume and reached the mesosphere, where meteors and meteorites usually break apart and burn up in our atmosphere. The mesosphere, about 31 to 50 miles (50 to 8 ...

In June 2015, a little-known type of aurora cut a Grand-Canyon-size ozone hole in Earth's mesosphere. Scientists have finally assessed the damage. When you purchase through links on our site ...