The "dunes" can be found at an altitude of around 62 miles in the upper part of an atmospheric layer known as the mesosphere.
The Space Weather Prediction Center says the "moderate" storm will arrive on May 16.
A sunspot region produced a series of coronal mass ejections starting on May 10.
Tanye McNeal of Aurora, Illinois, faces multiple charges over the incident in a hospital emergency room which was captured in a cell phone video.
Canada's largest companies all saw morning gains, as investors grew more confident in the wake of legalization rolling forward south of the border, in the U.S.
STEVE appears as a single slim ribbon of glowing purple and white light extending for hundreds or thousands of miles
Marijuana companies are searching for employees in a wide variety of capacities, ranging from menial labor to scientific research, as well as sales and management.
Denver Mayor Michael Hancock called his son's actions and words "inexcusable."
Meet "Steve," a beautiful but mysterious arc of light.
The rockets will leave from the northernmost launch sites in the world.
Unlike normal northern lights, these aurora dim and brighten, hence their name.
If you live in these states, find a dark place to look at the sky and you may see something absolutely incredible.
The country has stopped short of joining NATO.
The president used similar language after the Manchester attack in September.
An unusually active sun is making for fireworks here on Earth.
The 'Newtown' filmmakers are showing support to Aurora victims facing payment of $700,000 in legal fees.