This month's night sky is filled with close-range meteors, swirling nebulas, and prime stargazing conditions. Here’s when you ...

The King of the Planets teams up with an exceedingly narrow crescent moon for the last time this year in the evening sky on ...

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

I pick out North America’s celestial highlights for the week ahead (which also apply to mid-northern latitudes in the ...

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

There is something transformational about twilight. When the sun has just set in the west, the sky changes from the vibrant blue of afternoon to a more relaxed hue, as if it’s settling down for ...

Aaron Watson captured slightly more than he bargained for when setting up a timelapse to capture airglow and the Milky Way.

20. On Sept. 21, it will be visible in the evenings again. The line-up of three evening planets in the southwest twilight sky, on Dec. 17, 2021, with Jupiter at top left, Venus at bottom right ...

The line-up of three evening planets in the southwest twilight sky, on Dec. 17, 2021, with Jupiter at top left, Venus at bottom right, and dimmer Saturn in the middle, all defining the line of the ...