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Jupiter Auroras

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Last Updated: 18 January 2022

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For first time ever, NASA's Juno spacecraft has Spot electrons being fired down into Jupiter's atmosphere at up to 400 000 volts. That enormous amount of energy that rise to planets ' glowing auroras. These incredibly high voltages, however, are only Spot occasionally and that raises questions about what exactly is behind some of planets ' most vivid glows at poles. Discovery, detailed in study published today in Nature, was made possible by instruments on board Juno, which has been orbiting Jupiter for little over year, passing by poles closer than any other spacecraft has before. It confirm, in part, what astronomers expect, but it also shows that Jupiter auroras differently than auroras on Earth through processes that we dont fully understand yet. Auroras, on both Earth and Jupiter, form when charge particles like electrons spiral down planets ' magnetic field lines, entering atmosphere and creating glow. On Earth, most intense auroras are caused by solar storms, which occur when high - energy particles ejected from Sun rain down on our planet. When these particles enter atmosphere, they interact with gases and make sky glow red, green, and blue at poles. On Jupiter, auroras are formed by particles ejected from Io, planets moon. Ios volcanoes spew huge amounts of sulfur and into space, loading Jupiter's magnetic field with particles. On both planets, electrons are accelerated along magnetic field lines by electric currents similar to electric current that through socket when you plug in your phone charger. On Earth, solar wind is power source, firing electrons at up to 30 000 volts. On Jupiter, its planets have superfast rotation that acts as gigantic electric generator, so astronomers expect electrons to be fired by very high voltages on Jupiter as well. But they had never observed this before, so Juno gave astronomers that opportunity for first time. Weve never flown right over poles of Jupiter before, said Jonathan Nichols, professor in Department of Physics and Astronomy at University of Leicester, who did not take part in study. So Juno is telling US about those particles for first time. Spacecraft are in extremely elliptical orbit around Jupiter, passing very close to poles 53 days. To study Jupiter auroras, probe was equipped with several instruments, including Juno Energetic Particle Detector Instrument. Probe is traveling at about 30 miles per second over poles, so measurements have to happen in matter of seconds, said study co - author Barry Mauk, lead for JEDI and scientist at Johns Hopkins University apply Physics Laboratory, which makes Instrument. That was very substantial challenge, Mauk told Verge. We were very proud of fact that we were able to pull that off. On its first flyby over Auroras, however, Juno did detect high voltages astronomers expect. We were surprised, Mauk say.

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Related video

31 March 2020Jupiter Auroras - Hubble Observation

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Twisting light

Scientists, amateur - hunters, and NASA interns have discovered fascinating new types of aurora in recent years. One new type of aurora reveals curls in Earth's upper atmosphere, and another points to strange magnetic crunch in space. New observations of Jupiter's aurorae have also raised questions about nature of these lights. Visit Business homepage for more stories. Colorful lights that dance across polar skies create beautiful displays, but they also reveal mysteries about how planets, space, and sun interact. Though humans have been observing aurora for centuries, scientists are still about how it work. Just this year, amateur aurora - hunters discovered new type of aurora that could come from space particles heating Earth's upper atmosphere. Nasa intern also revealed new type of twisting aurora, which led scientists to mysterious crunch in Earth's magnetic field. Lights on Earth's poles continue to surprise researchers, and planet aurorae offer hints at how their atmospheres and magnetic fields behave, too. Here's what researchers have learnt about aurora over last few years.

* Please keep in mind that all text is machine-generated, we do not bear any responsibility, and you should always get advice from professionals before taking any actions.

* Please keep in mind that all text is machine-generated, we do not bear any responsibility, and you should always get advice from professionals before taking any actions

The missing "V's"

Giant domes house entire forests could be key to living on Mars. Giant Forest domes and underground tunnels could be answer for humans hoping to one day inhabit Mars. & Nbsp; At annual Mars City Design competition, team of nine students from MIT took first place with their Redwood Forest concept. Lead by MIT postdoc Valentina Sumini, Redwood Forest shows series of domes that would be connected via underground tunnels. Above surface would be trees, grass and bodies of water, while tunnels would protect humans from harsh conditions of Mars such as cosmic radiation and - 80 degree nights. In Earth's atmosphere, auroras are createdwhen sun showers planet with stream of charged particles, which are pulled toward poles by magnetic field that wrap around planet. Motion Of Charge Particles Along Those Magnetic Field Lines Creates Electric Currents In Space Above Earth's Atmosphere. This activity also creates electric potentials think of them as power - up stations, where any charged particle that passes through gets energy bump and accelerate. If one of those accelerated particles comes down into atmosphere and collides with atom, collision will cause enough energy to release visible light. This mechanism is responsible for planet's most energetic auroras, which create those stunning light shows for viewers on ground.

* Please keep in mind that all text is machine-generated, we do not bear any responsibility, and you should always get advice from professionals before taking any actions.

* Please keep in mind that all text is machine-generated, we do not bear any responsibility, and you should always get advice from professionals before taking any actions

Sources

* Please keep in mind that all text is machine-generated, we do not bear any responsibility, and you should always get advice from professionals before taking any actions.

* Please keep in mind that all text is machine-generated, we do not bear any responsibility, and you should always get advice from professionals before taking any actions

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