Sheets of aurorae

Astronomy & Observing News

See Photos of the Widespread Aurorae Last Weekend

An extreme (G5) geomagnetic storm hit Earth last weekend, delighting viewers as far south as Florida with green and red curtains of light.

Aurora prequel

Explore the Night with Bob King

Severe Geogmagnetic Storm Has Arrived! Auroral Blast Expected Friday Night

A severe geomagnetic storm has just hit Earth — which means we could see auroras tonight! Here's what you'll need to know.

Gegenschein and Milky Way

Explore the Night with Bob King

Fuzzy Glows: See Zodiacal Light, Gegenschein, Airglow, and Aurorae

Find time this season to set aside your telescope and seek the night sky's ghostly glows.

Red aurora

Auroras

Aurora Season Is Underway

These are the nights to get ready for the auroras — and tonight may be your lucky night. Not only is the current solar cycle swiftly intensifying, March is one of the best times of the year to see the northern lights.

Aurora over a lodge

Celestial Objects to Observe

How to Photograph the Northern Lights

Follow these tips to help capture auroral displays.

Comet 67P

Solar System

Comets Have (Ultraviolet) Aurora, Too

Observations from the European Space Agency’s Rosetta spacecraft show that Comet 67P/Churyumov-Gerasimenko has its own aurora.

Northern Lights

Celestial News & Events

More Auroras Coming to Northern Skies

Keep your eye on the northern sky. Auroras are in the forecast for the next couple nights courtesy of a "hole" in the Sun's corona.

Coronal hole on October 13th

Celestial News & Events

Solar Forecasters Predict Chance of Auroras

The National Oceanic and Atmospheric Administration (NOAA) predicts a strong chance of geomagnetic activity tonight, October 13–14.

Extra-large Donut

Explore the Night with Bob King

Aurora at Your Fingertips

A survey of free services and apps that let you keep tabs on space weather so you can anticipate the next great aurora.

Green-striped night

Explore the Night with Bob King

Why We Can See In The Dark

In search of a pitch black night? Don't expect to find it on Earth. Thanks to starlight, zodiacal light, and especially airglow, true darkness doesn't exist.

Burst of light in the night

Celestial News & Events

How to Never Miss an Aurora

Learn exactly how and when to expect the next display of the northern lights with a few easy-to-use online tools.