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Forms of aurora: Arcs, curtains, coronas and more
Here are some of the forms of aurora that you might see. Some are more common, such as diffuse glows, while others are a sign of a big geomagnetic storm.
September 18, 2026
See the year’s fastest sunsets and sunrises around equinoxes
The year's fastest sunsets and sunrises happen around the equinoxes, and the slowest sunsets and sunrises happen around the solstices.
September 17, 2026
Equinox fun: Track the sun’s shift now until the solstice
On this equinox, start tracking the sunset point on your western horizon. You'll see a mighty shift between now and the June solstice.
September 17, 2026
Why is planet Venus so bright in Earth’s sky?
You can't miss dazzling Venus after sunset! It's the 3rd brightest object in the sky, after the sun and moon. But why is Venus so bright?
September 16, 2026
Meteor showers are here! 10 easy tips for watching
Meteor showers are unpredictable but nothing beats them for a fun and relaxing time under the stars. Here are our 10 tips to optimize your meteor viewing time.
September 15, 2026
See Venus in the daytime: Here are 3 helpful tips
You can spot Venus in the daytime. One of the best ways is when its near the moon. Here are 3 tips to help you spot the brilliant planet Venus in daylight.
September 13, 2026
What is retrograde motion? And why is the moon moving backwards?
What is retrograde motion? See an image that appears to show the moon moving backwards! An explanation, and more bizarre examples, here.
September 11, 2026
Zodiacal light: Start watching for it now
The zodiacal light is an eerie light extending up from the horizon before dawn around the Northern Hemisphere autumn. Southern Hemisphere? Look after sunset!
September 10, 2026
How many stars can you see on a moonless night?
Have you ever wondered how many stars are visible on a given night? It depends on factors including how dark your sky is and what your age is.
September 9, 2026
Meteor shower guide 2026: Up next … the Draconids
Up next is the Delta Aquariid meteor shower, they'll compete with a waning gibbous moon. Watch for meteors in dark skies before dawn the week before July 30.
September 1, 2026
