News / Science & Technology

    NASA Prepares for Next Solar Mission

    NASA Mission to Probe Sun's Mysteriesi
    X
    June 24, 2013 9:18 PM
    NASA, the U.S. space agency, is preparing to launch a mission to study the sun, specifically its mysterious interface region, the area between the sun's surface and its corona or upper atmosphere. VOA's Suzanne Presto in Washington has more about the Interface Region Imaging Spectrograph, or IRIS, which is set to launch from Vandenberg Air Force Base in California on June 27.
    Suzanne Presto
    The U.S. space agency NASA is preparing to launch a new mission to study the sun. The Interface Region Imaging Spectrograph, or IRIS, will observe the way solar material gathers energy and heats up as it moves through the sun's lower atmosphere.

    The upper layer of the sun's atmosphere, known as the corona, is thousands of times hotter than the sun's surface.  

    Scientists want to figure out how that happens, so they are preparing a mission to study the sun's so-called interface region, the area between the sun's photosphere and its corona.  

    Energy and plasma that flow through the interface region have an impact on us here on Earth. That region is the source of the sun's ultraviolet emission, which has an effect on our planet's climate, as well as the near-Earth space environment. Energy that seeps through the interface region drives solar wind.    

    That's where NASA's Interface Region Imaging Spectrograph, or IRIS, mission comes into play. IRIS is a small satellite with the ability to perform complex solar observations.

    Alan Title, the IRIS principal investigator based at Lockheed Martin's Advanced Technology Center in California, spoke to reporters about the mission's importance.

    "What we want to discover is what the basic physical processes are that transfer energy and material from the surface of the sun out to the outer atmosphere to the corona," he explained. "And, remember, the corona extends throughout the heliosphere. We live in the sun's outer atmosphere."

    High-resolution images & high temperatures

    IRIS will provide high-resolution images that even will show individual structures of energy as they rapidly stretch away from the sun. The U.S. space agency says IRIS images will be three-to-four times as detailed as those from NASA's Solar Dynamics Observatory.  

    IRIS also will provide spectra, data that reveals information about multiple wavelengths of light at once.

    NASA says IRIS will observe a range of temperatures from about 5,000 to 65,000 degrees Celsius, and up to about 10 million degrees Celsius during solar flares. But IRIS will not be observing the sun from up close.

    "IRIS flies around the Earth so it only gets about 600 kilometers closer to the sun than we are here on Earth, and that's about 92 million miles away," said principal investigator Alan Title. "So it's really not very much closer to the sun."

    The $181 million mission is set to last two years, but scientists say the solar explorer could function much longer.  

    IRIS is set to launch aboard a Pegasus XL rocket from Vandenberg Air Force Base in California on June 26.

    You May Like

    Vietnam Urges US to Lift Lethal Weapons Ban Amid S. China Sea Tensions

    US president’s upcoming visit to Vietnam underscores strength of relationship, and lifting embargo would reflect that trust, ambassador says

    What Your First Name Says About Who You Support for President

    Bobby, Betty and Curtis tend to support Donald Trump while people named Juan, Liz or Mohammad are more likely to lean toward Hillary Clinton

    South Pole Diary: In Round-the-clock Darkness, Radiant Moon Shines Like the Sun

    You hear more and see more when the moon first comes out; it’s your senses in overdrive, tuning into a new world.

    Featured Videos

    Your JavaScript is turned off or you have an old version of Adobe's Flash Player. Get the latest Flash player.
    Displaced By War, Syrian Artist Finds Inspiration Abroadi
    X
    May 02, 2016 1:36 PM
    Saudi-born Syrian painter Mohammad Zaza is among the millions who fled their home for an uncertain future after Syria's civil war broke out. Since fleeing Syria, Zaza has lived in Lebanon, Egypt, Jordan and now Turkey where his latest exhibition, “Earth is Blue like an Orange,” opened in Istanbul. He spoke with VOA about how being displaced by the Syrian civil war has affected the country's artists.
    Video

    Video Displaced By War, Syrian Artist Finds Inspiration Abroad

    Saudi-born Syrian painter Mohammad Zaza is among the millions who fled their home for an uncertain future after Syria's civil war broke out. Since fleeing Syria, Zaza has lived in Lebanon, Egypt, Jordan and now Turkey where his latest exhibition, “Earth is Blue like an Orange,” opened in Istanbul. He spoke with VOA about how being displaced by the Syrian civil war has affected the country's artists.
    Video

    Video Ethiopia’s Drought Takes Toll on Children

    Ethiopia is dealing with its worst drought in decades, thanks to El Nino weather patterns. An estimated 10 million people urgently need food aid. Six million of them are children, whose development may be compromised without sufficient help, Marthe van der Wolf reports for VOA from the Metahara district.
    Video

    Video Little Havana - a Slice of Cuban Culture in Florida

    Hispanic culture permeates everything in Miami’s Little Havana area: elderly men playing dominoes as they discuss politics, cigar rollers deep at work, or Cuban exiles talking with presidential candidates at a Cuban coffee window. With the recent rapprochement between Cuba and United States, one can only expect stronger ties between South Florida and Cuba.
    Video

    Video California Republicans Weigh Presidential Choices Amid Protests

    Republican presidential candidates have been wooing local party leaders in California, a state that could be decisive in selecting the party's nominee for U.S. president. VOA's Mike O’Sullivan reports delegates to the California party convention have been evaluating choices, while front-runner Donald Trump drew hundreds of raucous protesters Friday.
    Video

    Video Kurdish Football Team Helps War-Torn City Cope

    With the conflict still raging across much of Turkey’s predominantly Kurdish southeast, between the rebel PKK and the Turkish state, many Kurds are trying to escape the turmoil by focusing on the success of their football team Amedspor in Diyarbakir. The club is increasingly becoming a symbol for Kurds, not only in Diyarbakir but beyond. Dorian Jones reports from southeast Turkey.
    Video

    Video ‘The Lights of Africa’ - Through the Eyes of 54 Artists

    An exhibition bringing together the work of 54 African artists, one from each country, is touring the continent after debuting at COP21 in Paris. Called "Lumières d'Afrique," the show centers on access to electricity and, more figuratively, ideas that enlighten. Emilie Iob reports from Abidjan, the exhibition's first stop.
    Video

    Video Pakistani School Helps Slum Kids

    Master Mohammad Ayub runs a makeshift school in a public park in Islamabad. Thousands of poor children have benefited from his services over the years, but, as VOA's Ayesha Tanzeem reports, roughly 25 million school-age youths don't get an education in Pakistan.
    Video

    Video Florida’s Weeki Wachee ‘Mermaids’ Make a Splash

    Since 1947, ‘mermaids’ have fascinated tourists at central Florida’s Weeki Wachee Springs State Park with their fluid movements and synchronized ballet. Performing underwater has its challenges, including cold temperatures and a steady current, as VOA’s Lin Yang and Joseph Mok report.
    Video

    Video Somali, African Union Forces Face Resurgent Al-Shabab

    The Islamic State terror group claimed its first attack in Somalia earlier this week, though the claim has not been verified by forces on the ground. Meanwhile, al-Shabab militants have stepped up their attacks as Somalia prepares for elections later this year. Henry Ridgwell reports there are growing frustrations among Somalia’s Western backers over the country’s slow progress in forming its own armed forces to establish security after 25 years of chaos.
    Video

    Video Documentary Tells Tale of Chernobyl Returnees

    Ukraine this week is marking the 30th anniversary of the world's worst nuclear accident, at the Chernobyl nuclear power plant. Soviet officials at first said little about the accident, but later evacuated a 2,600-square-kilometer "exclusion zone." Some people, though, came back. American directors Holly Morris and Anne Bogart created a documentary about this faithful and brave community. VOA's Tetiana Kharchenko reports from New York on "The Babushkas of Chernobyl." Carol Pearson narrates.
    Video

    Video Nigerians Feel Bite of Buhari Economic Policy

    Despite the global drop in the price of oil, Nigerian President Muhammadu Buhari has refused to allow the country's currency to devalue, leading to a shortage of foreign exchange. Chris Stein reports from Lagos businessmen and consumers are feeling the impact as the country deals with a severe fuel shortage.
    Video

    Video  Return to the Wild

    There’s a growing trend in the United States to let old or underused golf courses revert back to nature. But as Erika Celeste reports from one parcel in Grafton, Ohio, converting 39 hectares of land back to green space is a lot more complicated than just not mowing the fairway.

    Special Report

    Adrift The Invisible African Diaspora