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Aurora Borealis and Aurora Australis

The Aurora Borealis and the Aurora Australis, sometimes called The Northern and Southern Lights, are natural light displays in the sky, usually observed at night, particularly in the polar regions. Auroras are most visible closer to the Poles due to the longer periods of darkness and the magnetic field.

689 Questions

What is the importance of the northern lights?

The Northern Lights, properly known as the Aurora Borealis, are as a result of ejections from the Sun being sent towards Earth, which then react with the atmosphere. The are a beautiful sight, and of interest to scientists.

When can you see Corona Borealis?

Corona Borealis, also known as the Northern Crown, can be seen in the night sky during the spring and summer months in the Northern Hemisphere. It is most visible during the late spring months when it is high in the sky in the evening hours.

Why is the Aurora Borealis seen only in cold places?

The Aurora Borealis is seen in colder places because the charged particles from the Sun are most concentrated at the Earth's polar regions due to its magnetic field. When these particles collide with the Earth's atmosphere, they produce the colorful light display known as the Northern Lights.

Why are the aurora borealis seen at night?

Most people think that the auroras only appear at night. Actually, the auroras are

happening all the time, they are just harder to see during the day. The best time to watch

the auroras is around midnight, when the auroras glow more violently than before. Soon

afterwards, the auroras fade into colorful cloudlike patterns where they swirl and loop

until dawn, when they are overpowered by the bright path of the rising sun.

The aurora borealis follow a specific routine. At twilight, they begin glowing in

the northern part of the sky. After this, the auroras transform into an arc that stretches

about 1000 miles across the sky from east to west. While rippling and spiraling, vertical

rays begin to change colors as their brightness constantly changes. Later, the lights scatter

which makes it seem that the auroras disappear. They then appear in patch-like patterns

for a few hours until they completely disappear.

Where and why do auroras occur in earth's atmosphere?

Where: It occurs in the Thermosphere.

Why: In the thermosphere, temperature increases steadily as altitude increases because nitrogen and oxygen atoms absorb solar radiation, and so in the ionosphere (the lower region of thermosphere at the altitude of 80 - 400 km) solar radiation that is absorbed by atmospheric gases causes the atoms of gas molecules to lose electrons and to produce ions and free electrons. Interaction between solar radiation and the ionosphere causes the phenomena known as auroras.

Why is the northen lights a natural wonder?

The northern lights, or aurora borealis, are a natural wonder because they are created by cosmic particles interacting with the Earth's atmosphere, producing beautiful displays of colored lights in the night sky. This phenomenon occurs near the Earth's magnetic poles and is a result of solar winds colliding with gases in the atmosphere. The unique and mesmerizing patterns of light make the northern lights one of the most spectacular natural phenomena on Earth.

Does the arctic tundra get the northern or southern lights?

The Arctic tundra is located in the northern hemisphere, so it is the best place to see the Northern Lights, also known as the aurora borealis. The Southern Lights, or aurora australis, can be seen in the southern hemisphere.

All about Aurora?

Aurora is a natural light display primarily seen in high-latitude regions around the Arctic and Antarctic. It is caused by the interaction between solar wind and Earth's magnetosphere. Aurora borealis occurs in the Northern Hemisphere, while aurora australis occurs in the Southern Hemisphere.

How are the Northern Lights - Aurora Borealis - related to the earth's magnetic field?

An Aurora Australis or an Aurora Borealis occurs when streams of particles from the sun's solar winds hit the earth's atmosphere at an angle (as can only happen at the poles). These particles interact with the edges of the earth's magnetic field and when they collide with the gases in the ionosphere, the particles glow creating curtains of blue, green and magenta. An aurora is sometimes said to be accompanied by a crackling sound, but this has never been recorded and scientists are at a loss to explain what causes the sound.

What are shimmering beams of light that can be seen inthe sky around earths north and south poles called?

Those shimmering beams of light are called auroras. Auroras occur when charged particles from the sun interact with Earth's magnetic field, creating colorful displays of light in the sky near the poles.

Can you see the northern lights in svalbard?

Yes, Svalbard is a great place to see the northern lights. Due to its high latitude and minimal light pollution, it offers good visibility of this natural light display. The best time to view the northern lights in Svalbard is from late September to late March.

Why are aurora found only in north pole and south pole?

An Aurora Australis or an Aurora Borealis occurs when streams of particles from the sun's solar winds hit the earth's atmosphere at an angle (as can only happen at the poles). These particles interact with the edges of the earth's magnetic field and when they collide with the gases in the ionosphere, the particles glow creating curtains of blue, green and magenta. An aurora is sometimes accompanied by a crackling sound. Both aurora appear around the polar regions. The Aurora Australis appears around Antarctica and the Aurora Borealis appears around the Arctic.

When does Aurora Borealis occur?

Aurora Borealis occurs in the northern hemisphere, and its companion, Aurora Australis in the Southern hemisphere.

Both are caused by a torrent of charged particles from our Sun, and which are directed by the earth's magnetic poles towards those poles.

This occurrence is most common during solar storms and sunspot activity, which occurs in an 11-year (or 22-yeaar) cycle.

In intense solar storms, they may even be seen as far south in the USA as Texas, but very rarely. Under these conditions, the excess of charged particles can damage electrical and telephone wiring (and transformers), by causing large currents to flow.

What causes Aurora to be visible?

1. Due to the burst of Solar flares, radioactive particles are produced
2. Hence, with the burst, the solar wind carries the particles away
3. Then When those particles reach near the earth's magnetosphere, they are deflected and send to the poles
4. Then those particles collide with the atoms of gases present on the atmosphere
5. Then corresponding to the particles collision with the atoms, their color are produced
6. By the quantum leaps of the atoms after coliding with the charged particles, the kinetic energy of atom is changed to visible light

Written by: Rohan Vaidya

How does the northern lights work?

This occures when when highly charged electrons from the solar wind interact with elements in the earth's atmosphere. Solar winds stream away from the sun at speeds of about 1 million miles per hour. When they reach the earth, some 40 hours after leaving the sun, they follow the lines of magnetic force generated by the earth's core and flow through the magnetosphere, a teardrop-shaped area of highly charged electrical and magnetic fields. The color of the aurora depends on which atom is struck, and the altitude of the meeting.

  • Green - oxygen, up to 150 miles in altitude
  • Red - oxygen, above 150 miles in altitude
  • Blue - nitrogen, up to 60 miles in altitude
  • Purple/violet - nitrogen, above 60 miles in altitude

If they're combined this means this means that there are all different kinds of altitude and nitrogen/oxygen mix. They go on an 11 year cycle and the next predited time is in 2011 or 2012, which is this year or next year. This is what I learned on my trip to Alaska for my 16th birthday. I hope that this can help. :)

When were the Auroras discovered?

The auroras are the result of phenomena that have been going on since early in the formation of the atmosphere around the planet earth - consequently the first prehistoric travelers to the Arctic and near-arctic regions undoubtedly saw and marveled at them.

Can you see the aurora borealis in summer?

During the northern summer, sunlight prevents viewing the aurora at high northern latitudes. As the sun climbs in the sky until June 21st and then descends, the nights are too light to see the aurora.

Where is the aurora borealis located?

It generally is located in the far north close to the pole but the lights have been seen as far south as California.

What are polar lights?

Polar lights, also known as auroras, are natural light displays in the Earth's sky predominantly seen in high-latitude regions. They are caused by the interaction between particles from the sun and the Earth's magnetic field, which creates stunning displays of colorful lights in the polar regions.

How often does the Aurora occur?

Solar flares are ejected from the Sun every so often. It relates to solar activity on the Sun. They can occur at any time, but are more common at the peak of the cycle of solar activity and for about 3 years after the peak. The solar activity cycle takes about 11 years.

When can you see the Aurora Australis?

There isn't really a schedule of auroras; they happen when a stream of charged particles from the Sun interact with the Earth's magnetic field. Watch the website at spaceweather.com (see the link below) and look for "coronal mass ejections"; bright auroras often follow about 2 days later. But they sometimes are visible without any warning, because the Sun is CONSTANTLY sending out masses of charged particles.

Both aurorae occur around the polar regions. The Aurora Australis appears around Antarctica and the Aurora Borealis appears around the Arctic.

The Aurora Australis is only visible from the southern latitudes and has never been seen north of the 30 degree line of latitude.

The aurora is associated with solar wind activity and is most prevalent at the peak of the eleven year sun spot cycles, and the three years afterwards.

The best places to see an Aurora Australis in the Australasia region would be Tasmania or New Zealand, away from cities and other sources of artificial light pollution.

Is it possible to see the northern lights from Washington?

Occasionally when solar activity is extremely intense, the Northern Lights may be visible in the state of Washington - the further north and east in the state, the more likely. Solar energy peaks about every 11 years so that's about how often there is a chance of seeing the Northern lights in Washington - but its still rare; it has to be a more energetic peak solar year than normal for the northern lights to stray that far south.

What is Aurora Australia?

An Aurora Australis or an Aurora Borealis occurs when streams of particles from the sun's solar winds hit the earth's atmosphere at an angle (as can only happen at the poles). These particles interact with the edges of the earth's magnetic field and when they collide with the gases in the ionosphere, the particles glow creating curtains of blue, green and magenta. An aurora is sometimes accompanied by a crackling sound.

What are facts about the Aurora borealis?

The Aurora borealis, also known as the northern lights, is a natural light display in the Earth's sky caused by solar wind particles interacting with the Earth's magnetic field. They are most visible in high-latitude regions close to the Arctic Circle. The lights can appear in various colors, such as green, pink, red, blue, and violet, creating stunning visual displays in the night sky.