Auroras Underfoot.

We fly right over them.

Auroras are caused by solar activity.

And you'll see that it leads with a shifting star field, and there's an Aurora Borealis in the background, kind of morphing with color.

Its southern counterpart, the aurora australis (or the southern lights), has features that are almost identical to the aurora borealis and changes simultaneously with changes in the northern auroral zone.

It is not disorienting to see auroras underfoot, he says.

Indeed, more auroras are in the offing.

Early evidence for a geomagnetic connection comes from the statistics of auroral observations.

The collection of these interactions is what creates the northern and southern lights.

From this book anyone can learn about the aurora borealis or the Eskimos

The protons and electrons creating the northern lights depart from the Sun's corona.

We can actually fly into the auroras, says astronaut

Sometimes you feel like you can reach out and touch them.

Longtime sky watchers say it is the greatest show on Earth.

And you'll see that it leads with a shifting star field, and there's an Aurora Borealis in the background, kind of morphing with color. The color of the Aurora Borealis can be controlled using this single bar of color at the bottom, and we'll put it down here to red.

Glowing green and red, shimmering hypnotically across the night sky, the aurora borealis is a wonder to behold.

The precise color at any altitude depends on the temperature and density of the local atmosphere.

Following some recent years of deep quiet, the sun is waking up again.

This is still speculative, but Comet ISON could provide the seeds for a noctilucent display.

Incoming particles are guided by Earth's magnetic field to a pair of doughnut shaped regions called auroral ovals.

Well, I tell you, what really is humbling is when you look out the window and you see something like the Aurora Borealis or the, you know, the lights in the southern hemisphere also.

Occasionally the resulting modification of the Earth's magnetic field can be so strong that it produces auroras visible at middle latitudes, on field lines much closer to the equator than those of the auroral zone.

At Tromsø and on Svalbard, European incoherent scatter (EISCAT) radars probe the nature of the magnetosphere.

One early theory proposed for the acceleration of auroral electrons is based on an assumed static, or quasi static, electric field and a consequent uni directional potential drop.

Measurements were made of electric and magnetic fields, particle distributions, plasma composition and waves, and images of auroras were acquired in the ultraviolet spectrum.

Twilight.

THE TWILIGHT ZONE.

PARIS The Northern Lights was the title of a major painting exhibition in Paris a few years ago, dedicated to Scandinavian masterpieces.

The auroras could be seen as brightly as city lights on the Earth below, and even in the day night terminator of the rising and setting sun.

It's twilight.

He was the science officer for ISS expedition 6 back in 2003 when the auroras were even stronger than they were now.

The launch of the Freja satellite on 6 October 1992 to conduct research on auroral and related phenomena was an important contribution to space science.

I have read the Twilight tetralogy.

I have read the Twilight tetralogy.

THAT ARE A PART OF THE TWILIGHT ZONE.

The main findings have been that auroral arcs and other bright forms are due to electrons that have been accelerated during the final few 10,000 km or so of their plunge into the atmosphere.

But drenched in vanilla twilight

Walter William Bryant wrote in his book (1920) that Tycho Brahe seems to have been something of a homœopathist, for he recommends sulfur to cure infectious diseases brought on by the sulphurous vapours of the Aurora Borealis.

This is a bowhead whale.

Auroras also occur on other planets.

I've never seen the aurora borealis.

In northern latitudes, the effect is known as the aurora borealis (or the northern lights), named after the Roman goddess of dawn, Aurora, and the Greek name for the north wind, Boreas, by Galileo in 1619.

Since then an extensive collection of measurements has been acquired painstakingly and with steadily improving resolution since the 1960s by many research teams using rockets and satellites to traverse the auroral zone.

I thought we were gonna enjoy the waning twilight together.

Richard Pyle dives the reef's Twilight Zone