Science Completed-IRIS-in-clean-room-600x318

Published on June 3rd, 2014 | by Sandy Dechert

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NASA’s IRIS Captures A Huge Sun Sneeze (CME)

June 3rd, 2014 by

IRIS observatory satellite (NASA.gov)

The National Aeronautics and Space Administration scored an impressive first a few weeks ago by capturing an enormous solar coronal mass ejection with its new Interface Region Imaging Spectrograph.

A CME is a massive burst of solar wind and magnetic fields that rises above the solar corona and may be released into interplanetary space. NASA explains the phenomenon viewed by IRIS and presented in the video below as a curtain or sheet of solar material erupting outward from the Sun at speeds of 1.5 million miles per hour. Coronal mass ejections are often associated with similar forms of solar activity such as solar flares, but no causal relationship has yet been established.

“This is the first clear CME for IRIS so the team is very excited,” said Bart De Pontieu, the IRIS science lead at Lockheed Martin Solar & Astrophysics Laboratory in Palo Alto, California. Examining the spectra produced from imaging allows investigators to determine how much solar material is present at specific velocities, temperatures, and densities. The field of view seen in the video is about five Earths wide and about seven-and-a-half Earths tall.

When these ejections reach Earth, as they sometimes do, a shock wave causes a geomagnetic storm that may disrupt Earth’s magnetosphere. Solar energetic particles can intensify aurorae in large regions around Earth’s magnetic poles. Along with solar flares of other origins, CMEs can damage satellites, disrupt cell phone, GPS, and radio transmissions on Earth, and stop power lines from transmitting electricity, resulting in power outages. They can also emit intense, potentially lethal cosmic rays capable of reaching humans at high altitudes (airplanes or space stations).

IRIS satellite in its clean room (NASA)A NASA Small Explorer, IRIS was launched last June so scientists can observe how solar material moves, gathers energy, and heats up as it travels through the chromosphere, a somewhat mysterious region in the Sun’s lower atmosphere. It’s the first observatory to image and record the chromosphere and space transition area with high resolution and wide temperature coverage (ranging from 5000 degrees K and 65,000 K, and up to 10 million K during solar flares). State-of-the-art 3-D numerical modeling on supercomputers compiles the data from IRIS. From the NASA websites:

“Tracking how material and energy move through this region is a crucial part of understanding the dynamics of the sun. Such information can help explain what causes the ejection of solar material—from the steady stream of the solar wind to larger, explosive eruptions such as coronal mass ejections—that travels toward Earth and causes space weather that can disrupt human technology.”

The IRIS mission’s primary goal is to understand how heat and energy move through the lower levels of the solar atmosphere. The instrument seeks to answer the following questions:

Solar flare preceding 2013 summer solstice flare (NASA)• Which types of nonthermal energy dominate in the chromosphere and beyond?
• How does the chromosphere regulate mass and energy supply to the corona and heliosphere?
• How do magnetic flux and matter rise through the lower atmosphere, and what role does flux emergence play in flares and mass ejections?

IRIS weighs 440 pounds and is approximately 7 feet (2.1m) long. With its solar panels extended, it’s a little over 12 feet (3.7m) across. Sun-synchronous polar orbit (NASA)It travels in a polar, sun-synchronous Earth orbit. Lockheed Martin Solar and Astrophysics Laboratory has overall responsibility for the mission, with major contributions from Lockheed Martin Civil Space, NASA Ames, Smithsonian Astrophysical Laboratory, Montana State University, Stanford University, and the University of Oslo.

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About the Author

covers environmental, health, renewable and conventional energy, and climate change news. She's worked for groundbreaking environmental consultants and a Fortune 100 health care firm, writes two top-level blogs on Examiner.com, ranked #2 on ONPP's 2011 Top 50 blogs on Women's Health, and attributes her modest success to an "indelible habit of poking around to satisfy my own curiosity."



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  • bgrnathan

    CHECK OUT my Internet articles on science and
    faith below.

    Just google the titles to access the articles/sites.

    THE SCIENCE SUPPORTING CREATION

    NATURAL LIMITS OF EVOLUTION

    HOW FORENSIC SCIENCE REFUTES ATHEISM

    ATHEISM MATHEMATICALLY IMPOSSIBLE

    WAR AMONG EVOLUTIONISTS (2nd Edition)

    NO HALF-EVOLVED DINOSAURS

    DOES GOD PARTICLE EXPLAIN UNIVERSE’S ORIGIN?

    ARE FOSSILS REALLY MILLIONS OF YEARS OLD?

    HOW DID MY DNA MAKE ME?

    ANY LIFE ON MARS CAME FROM EARTH

    NO MEAT-EATING ANIMALS EXISTED IN THE BEGINNING

    Sincerely,

    Babu G. Ranganathan*

    (B.A. Bible/Biology)

    Author of the popular Internet article, TRADITIONAL DOCTRINE OF HELL EVOLVED

    FROM GREEK ROOTS

    *I have given successful lectures (with question and answer period afterwards)

    defending creation before evolutionist science faculty and students at various

    colleges and universities. I’ve been privileged to be recognized in the 24th

    edition of Marquis “Who’s Who in The East.”

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