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Topic: Aurora

NASA’s Juno Spacecraft data reveals birth of Auroral Dawn Storms on Jupiter

 

NASA - National Aeronautics and Space AdministrationPasadena, CA – New results from the Ultraviolet Spectrograph instrument on NASA’s Juno mission reveal for the first time the birth of auroral dawn storms – the early morning brightening unique to Jupiter’s spectacular aurorae.

These immense, transient displays of light occur at both Jovian poles and had previously been observed only by ground-based and Earth-orbiting observatories, notably NASA’s Hubble Space Telescope. Results of this study were published March 16th in the journal AGU Advances.

This illustration depicts ultraviolet polar aurorae on Jupiter and Earth. (NASA/JPL-Caltech/SwRI/UVS/STScI/MODIS/WIC/IMAGE/ULiège)

This illustration depicts ultraviolet polar aurorae on Jupiter and Earth. (NASA/JPL-Caltech/SwRI/UVS/STScI/MODIS/WIC/IMAGE/ULiège)

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NASA study shows Earth, Moon used to share Magnetic Shield

 

NASA - National Aeronautics and Space AdministrationWashington, D.C. – But a neighboring shield may have helped our planet retain its atmosphere and eventually go on to develop life and habitable conditions. That shield was the Moon, says a NASA-led study in the journal Science Advances.

“The Moon seems to have presented a substantial protective barrier against the solar wind for the Earth, which was critical to Earth’s ability to maintain its atmosphere during this time,” said Jim Green, NASA’s chief scientist and lead author of the new study. “We look forward to following up on these findings when NASA sends astronauts to the Moon through the Artemis program, which will return critical samples of the lunar South Pole.”

This illustration shows magnetic field lines that Earth generates today. The Moon no longer has a magnetic field. (NASA)

This illustration shows magnetic field lines that Earth generates today. The Moon no longer has a magnetic field. (NASA)

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NASA data reveals Comet 67P/Churyumov-Gerasimenko has an Ultraviolet Aurora

 

NASA - National Aeronautics and Space AdministrationPasadena, CA – Data from NASA instruments aboard the ESA (European Space Agency) Rosetta mission have helped reveal that comet 67P/Churyumov-Gerasimenko has its own far-ultraviolet aurora.

It is the first time such electromagnetic emissions in the far-ultraviolet have been documented on a celestial object other than a planet or moon. A paper on the findings was released today in the journal Nature Astronomy.

This composite is a mosaic comprising four individual NAVCAM images taken from 19 miles (31 kilometers) from the center of comet 67P/Churyumov-Gerasimenko on Nov. 20, 2014. The image resolution is 10 feet (3 meters) per pixel. (ESA/Rosetta/NAVCAM)

This composite is a mosaic comprising four individual NAVCAM images taken from 19 miles (31 kilometers) from the center of comet 67P/Churyumov-Gerasimenko on Nov. 20, 2014. The image resolution is 10 feet (3 meters) per pixel. (ESA/Rosetta/NAVCAM)

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NASA’s MAVEN Orbiter observes Global Aurora on Mars Surface

 

Written by Laurie Cantillo / Dwayne Brown
NASA Headquarters

NASA - National Aeronautics and Space AdministrationWashington, D.C. – An unexpectedly strong blast from the Sun hit Mars this month, observed by NASA missions in orbit and on the surface.

“NASA’s distributed set of science missions is in the right place to detect activity on the Sun and examine the effects of such solar events at Mars as never possible before,” said MAVEN Program Scientist Elsayed Talaat, program scientist at NASA Headquarters, Washington, for NASA’s Mars Atmosphere and Volatile Evolution, or MAVEN, mission.

The solar event on September 11th, 2017 sparked a global aurora at Mars more than 25 times brighter than any previously seen by the MAVEN orbiter, which has been studying the Martian atmosphere’s interaction with the solar wind since 2014.

These images from the Imaging Ultraviolet Spectrograph on NASA's MAVEN orbiter show the appearance of a bright aurora on Mars during a solar storm in September 2017. The purple-white colors shows the intensity of ultraviolet light on Mars' night side before (left) and during (right) the event. (NASA/Univ. of Colorado)

These images from the Imaging Ultraviolet Spectrograph on NASA’s MAVEN orbiter show the appearance of a bright aurora on Mars during a solar storm in September 2017. The purple-white colors shows the intensity of ultraviolet light on Mars’ night side before (left) and during (right) the event. (NASA/Univ. of Colorado)

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NASA along with European Space Agency observe how Solar Storms move through Space

 

Written by Sarah Frazier
NASA’s Goddard Space Flight Center

NASA - National Aeronautics and Space AdministrationGreenbelt, MD – Our Sun is active: Not only does it release a constant stream of material, called the solar wind, but it also lets out occasional bursts of faster-moving material, known as coronal mass ejections, or CMEs.

NASA researchers wish to improve our understanding of CMEs and how they move through space because they can interact with the magnetic field around Earth, affecting satellites, interfering with GPS signals, triggering auroras, and — in extreme cases — straining power grids.

While we track CMEs with a number of instruments, the sheer size of the solar system means that our observations are limited, and usually taken from a distance.

ESA and NASA’s Solar and Heliospheric Observatory observed a coronal mass ejection erupting from the Sun on Oct. 14, 2014. Scientists went on to track this coronal mass ejection through the solar system using 10 NASA and ESA spacecraft. (The bright light appearing at roughly 2 o'clock is the planet Mercury.) (ESA/NASA/SOHO)

ESA and NASA’s Solar and Heliospheric Observatory observed a coronal mass ejection erupting from the Sun on Oct. 14, 2014. Scientists went on to track this coronal mass ejection through the solar system using 10 NASA and ESA spacecraft. (The bright light appearing at roughly 2 o’clock is the planet Mercury.) (ESA/NASA/SOHO)

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NASA’s MAVEN Spacecraft celebrates 1,000 Days in Orbit

 

Written by Nancy Jones
NASA Goddard Space Flight Center

NASA - National Aeronautics and Space AdministrationGreenbelt, MD – On June 17th, NASA’s MAVEN (Mars Atmosphere and Volatile Evolution Mission) will celebrate 1,000 Earth days in orbit around the Red Planet. Since its launch in November 2013 and its orbit insertion in September 2014, MAVEN has been exploring the upper atmosphere of Mars.

MAVEN is bringing insight to how the sun stripped Mars of most of its atmosphere, turning a planet once possibly habitable to microbial life into a barren desert world.

This artist concept shows the MAVEN spacecraft and the limb of Mars. (NASA's Goddard Space Flight Center)

This artist concept shows the MAVEN spacecraft and the limb of Mars. (NASA’s Goddard Space Flight Center)

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NASA successfully launched Sounding Rocket into the Alaskan Sky

 

Written by Keith Koehler
NASA’s Wallops Flight Facility

NASA - National Aeronautics and Space AdministrationWallops Island, VA – An experiment to measure nitric oxide in the polar sky was successfully launched on a NASA sounding rocket at 8:45am EST, January 27th, 2017, from the Poker Flat Research Range in Alaska.

The Polar Night Nitric Oxide experiment or PolarNOx was launched on a Black Brant IX sounding rocket to an altitude of nearly 176 miles.  Preliminary information shows that good data was collected.

NASA Sounding Rocket launching from the Poker Flat Research Range in Alaska. (NASA/Jamie Adkins)

NASA Sounding Rocket launching from the Poker Flat Research Range in Alaska. (NASA/Jamie Adkins)

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NASA’s THEMIS spacecraft observes Earth’s vibrating Magnetic Field

 

Written by Lina Tran
NASA’s Goddard Space Flight Center

NASA - National Aeronautics and Space AdministrationGreenbelt, MD – The majestic auroras have captivated humans for thousands of years, but their nature – the fact that the lights are electromagnetic and respond to solar activity – was only realized in the last 150 years.

Thanks to coordinated multi-satellite observations and a worldwide network of magnetic sensors and cameras, close study of auroras has become possible over recent decades. Yet, auroras continue to mystify, dancing far above the ground to some, thus far, undetected rhythm.

An artist’s rendering (not to scale) of a cross-section of the magnetosphere, with the solar wind on the left in yellow and magnetic field lines emanating from the Earth in blue. The five THEMIS probes were well-positioned to directly observe one particular magnetic field line as it oscillated back and forth roughly every six minutes. In this unstable environment, electrons in near-Earth space, depicted as white dots, stream rapidly down magnetic field lines towards Earth’s poles. There, they interact with oxygen and nitrogen particles in the upper atmosphere, releasing photons and brightening a specific region of the aurora. (Emmanuel Masongsong/UCLA EPSS/NASA)

An artist’s rendering (not to scale) of a cross-section of the magnetosphere, with the solar wind on the left in yellow and magnetic field lines emanating from the Earth in blue. The five THEMIS probes were well-positioned to directly observe one particular magnetic field line as it oscillated back and forth roughly every six minutes. In this unstable environment, electrons in near-Earth space, depicted as white dots, stream rapidly down magnetic field lines towards Earth’s poles. There, they interact with oxygen and nitrogen particles in the upper atmosphere, releasing photons and brightening a specific region of the aurora. (Emmanuel Masongsong/UCLA EPSS/NASA)

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NASA’s MAVEN spacecraft discovers Dust Cloud and Aurora in Mars’ Atmosphere

 

Written by Dwayne Brown
NASA Headquarters

NASA - National Aeronautics and Space AdministrationWashington, D.C. – NASA’s Mars Atmosphere and Volatile Evolution (MAVEN) spacecraft has observed two unexpected phenomena in the Martian atmosphere: an unexplained high-altitude dust cloud and aurora that reaches deep into the Martian atmosphere.

The presence of the dust at orbital altitudes from about 93 miles (150 kilometers) to 190 miles (300 kilometers) above the surface was not predicted. Although the source and composition of the dust are unknown, there is no hazard to MAVEN and other spacecraft orbiting Mars.

Artist’s conception of MAVEN’s Imaging UltraViolet Spectrograph (IUVS) observing the “Christmas Lights Aurora" on Mars. MAVEN observations show that aurora on Mars is similar to Earth’s "Northern Lights" but has a different origin. (University of Colorado)

Artist’s conception of MAVEN’s Imaging UltraViolet Spectrograph (IUVS) observing the “Christmas Lights Aurora” on Mars. MAVEN observations show that aurora on Mars is similar to Earth’s “Northern Lights” but has a different origin. (University of Colorado)

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Disney On Ice brings “Princesses & Heroes” to Nashville’s Bridgestone Arena October 3rd-6th

 

Eight Inspiring Princesses Find Happily Ever After In a Magical Ice Show

Disney On IceNashville, TN – Believing is just the beginning in Disney On Ice presents Princesses & Heroes!

Dreamers from Nashville will witness the magic when Ariel, Belle, Cinderella, Rapunzel, Tiana, Jasmine, Aurora and Snow White all make their wishes come true in this collection of celebrated tales wonderfully told through artistic skating and acrobatics.

Disney on Ice coming to Bridgestone Arena

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