News / Science & Technology

    New 'Super-Earth' Found With Fine-Tuned Telescope Readings

    A NASA image of space
    A NASA image of space

    A distant planet barely bigger than Earth has been discovered in our galaxy, but it might have been missed if not for the combined efforts of several observatories both on and around our home planet.

    U.S. space agency astronomers say the hard-to-detect data gathered during multiple readings by the Kepler space telescope and two ground observatories revealed tiny clues they needed to make the improbable discovery of a so-called super-Earth planet that otherwise would have gone undetected.

    NASA's orbiting Kepler probe initially detected the super-Earth - a distant rocky planet about the size of the Earth - in our Milky Way galaxy about 350 light years from our solar system. Overlapping readings taken by two ground-based telescopes at the Kitt Peak National Observatory in Arizona confirmed the discovery.

    Discovering a relatively small, Earth-sized planet so far away is remarkable because usually only distant planets at least as big as our solar system’s monstrous gas-giant, Jupiter, can be detected - and Jupiter has nearly 320 times more mass than the Earth, with 120 times more surface area.  

    The newly-found alien world is relatively small at only 1.6 times the size of the Earth. It also streaks around its very bright star in just 2.8 days, and orbits from a scorchingly close distance of 6 million kilometers, making the bizarre super-Earth more difficult to track and identify.  

    The NASA astronomers say the task took 65 scientists 15 months and that the multiple precision measurements and other readings taken by Kepler and the Kitt Peak telescopes made such a sensitive planet detection possible.

    In a related development, the California Institute of Technology, Caltech, on Friday announced the significant discovery of 18 Jupiter-sized planets.  The huge alien worlds, or exoplanets, were detected in a decade-long survey of more than 300 expanding, aging stars.  

    Details of the separate NASA and Caltech discoveries will appear in reports published in an upcoming edition of Astrophysical Journal.

    Astronomers search for distant planets by measuring a star's brightness. Planets passing between the star and the telescope will cause its instruments to register a slight dimming in the star's brightness.

    The NASA scientists emphasize that just because a planet is categorized as a super-Earth does not mean it is Earth-like.  They say the newly-found super-Earth is heavy and dense, with a mass no more than 10 times that of the Earth, and it has a surface temperature of 1,630 degrees Celsius, which is hot enough to melt iron.   

    In contrast to the strange exoplanet's brief 2.8-day year and scorching proximity to its star, the Earth is a comfortable 150 million kilometers away from the Sun, and takes a leisurely 365 days to make a complete solar orbit.

    You May Like

    Video Obama Remembers Fallen Troops for Memorial Day

    President urges Americans this holiday weekend to 'take a moment and offer a silent word of prayer or public word of thanks' to country's veterans

    Upsurge of Migratory Traffic Across Sahara From West to North Africa

    A report by the International Organization for Migration finds more than 60,000 migrants have transited through the Agadez region of Niger between February and April

    UN Blocks Access to Journalist Advocacy Group

    United Nations has rejected bid from nonprofit journalist advocacy group that wanted 'consultative status,' ranking that would have given them greater access to UN meetings

    This forum has been closed.
    Comments
         
    There are no comments in this forum. Be first and add one

    Featured Videos

    Your JavaScript is turned off or you have an old version of Adobe's Flash Player. Get the latest Flash player.
    Chinese-Americans Heart Trump, Bucking National Trendi
    X
    May 27, 2016 5:57 AM
    A new study conducted by three Asian-American organizations shows there are three times as many Democrats as there are Republicans among Asian-American voters, and they favor Hillary Clinton over Donald Trump. But one group, called Chinese-Americans For Trump, is going against the tide and strongly supports the business tycoon. VOA’s Elizabeth Lee caught up with them at a Trump rally and reports from Anaheim, California.
    Video

    Video Chinese-Americans Heart Trump, Bucking National Trend

    A new study conducted by three Asian-American organizations shows there are three times as many Democrats as there are Republicans among Asian-American voters, and they favor Hillary Clinton over Donald Trump. But one group, called Chinese-Americans For Trump, is going against the tide and strongly supports the business tycoon. VOA’s Elizabeth Lee caught up with them at a Trump rally and reports from Anaheim, California.
    Video

    Video Reactions to Trump's Success Polarized Abroad

    What seemed impossible less than a year ago is now almost a certainty. New York real estate mogul Donald Trump has won the number of delegates needed to secure the Republican presidential nomination. The prospect has sparked as much controversy abroad as it has in the United States. Zlatica Hoke has more.
    Video

    Video Drawings by Children in Hiroshima Show Hope and Peace

    On Friday, President Barack Obama will visit Hiroshima, Japan, the first American president to do so while in office. In August 1945, the United States dropped an atomic bomb on the city to force Japan's surrender in World War II. Although their city lay in ruins, some Hiroshima schoolchildren drew pictures of hope and peace. The former students and their drawings are now part of a documentary called “Pictures from a Hiroshima Schoolyard.” VOA's Deborah Block has the story.
    Video

    Video Vietnamese Rapper Performs for Obama

    A prominent young Vietnamese artist told President Obama said she faced roadblocks as a woman rapper, and asked the president about government support for the arts. He asked her to rap, and he even offered to provide a base beat for her. Watch what happened.
    Video

    Video Roots Run Deep for Tunisia's Dwindling Jewish Community

    This week, hundreds of Jewish pilgrims are defying terrorist threats to celebrate an ancient religious festival on the Tunisian island of Djerba. The festivities cast a spotlight on North Africa's once-vibrant Jewish population that has all but died out in recent decades. Despite rising threats of militant Islam and the country's battered economy, one of the Arab world's last Jewish communities is staying put and nurturing a new generation. VOA’s Lisa Bryant reports.
    Video

    Video Meet Your New Co-Worker: The Robot

    Increasing numbers of robots are joining the workforce, as companies scale back and more processes become automated. The latest robots are flexible and collaborative, built to work alongside humans as opposed to replacing them. VOA’s Tina Trinh looks at the next generation of automated employees helping out their human colleagues.
    Video

    Video Wheelchair Technology in Tune With Times

    Technologies for the disabled, including wheelchair technology, are advancing just as quickly as everything else in the digital age. Two new advances in wheelchairs offer improved control and a more comfortable fit. VOA's George Putic reports.
    Video

    Video Baby Boxes Offer Safe Haven for Unwanted Children

    No one knows exactly how many babies are abandoned worldwide each year. The statistic is a difficult one to determine because it is illegal in most places. Therefore unwanted babies are often hidden and left to die. But as Erika Celeste reports from Woodburn, Indiana, a new program hopes to make surrendering infants safer for everyone.
    Video

    Video California Celebration Showcases Local Wines, Balloons

    Communities in the U.S. often hold festivals to show what makes them special. In California, for example, farmers near Fresno celebrate their figs and those around Gilmore showcase their garlic. Mike O'Sullivan reports that the wine-producing region of Temecula offers local vintages in an annual festival where rides on hot-air balloons add to the excitement.
    Video

    Video US Elementary School Offers Living Science Lessons

    Zero is not a good score on a test at school. But Discovery Elementary is proud of its “net zero” rating. Net zero describes a building in which the amount of energy provided by on-site renewable sources equals the amount of energy the building uses. As Faiza Elmasry tells us, the innovative features in the building turn the school into a teaching tool, where kids can't help but learn about science and sustainability. Faith Lapidus narrates.

    Special Report

    Adrift The Invisible African Diaspora