News / Science & Technology

    Astronomers Discover Lone Planet with No Star

    Multicolor image from the Pan-STARRS1 telescope of the free-floating planet PSO J318.5-22, in the constellation of Capricornus. The planet is extremely cold and faint, about 100 billion times fainter in optical light than the planet Venus. (N. Metcalfe &
    Multicolor image from the Pan-STARRS1 telescope of the free-floating planet PSO J318.5-22, in the constellation of Capricornus. The planet is extremely cold and faint, about 100 billion times fainter in optical light than the planet Venus. (N. Metcalfe &

    Related Articles

    Lack of Methane Deals Blow to Martian Life Theory

    The lack of methane gas does not completely rule out the possibility of life

    New Research Could Lead to Particle Accelerator on a Chip

    Scientists think development that could have far-reaching implications for science and medicine

    Powerful Volcanoes Raise New Questions About Ancient Mars

    Finding raises fresh questions about conditions on Mars in its early years, when scientists believe planet was much more Earth-like
    VOA News
    Astronomers have discovered a lone planet, floating in space without a star.

    This free-floating planet, dubbed PSO J318.5-22, is just 80 light  years away from Earth and has a mass six times that of Jupiter. The planet is only 12 million years old—a newborn in planet lifetimes.

    "We have never before seen an object free-floating in space that that looks like this. It has all the characteristics of young planets found around other stars, but it is drifting out there all alone,” explained team leader Dr. Michael Liu of the Institute for Astronomy at the University of Hawaii at Manoa. “I had often wondered if such solitary objects exist, and now we know they do.”

    Exoplanets are being discovered at an astounding pace, with about a thousand found by indirect methods such as wobbling or dimming of their host stars induced by the planet. However, only a handful of planets have been directly imaged, all of which are around young stars, usually less than 200 million years old.

    Artist's conception of PSO J318.5-22. (MPIA/V. Ch. Quetz)Artist's conception of PSO J318.5-22. (MPIA/V. Ch. Quetz)
    x
    Artist's conception of PSO J318.5-22. (MPIA/V. Ch. Quetz)
    Artist's conception of PSO J318.5-22. (MPIA/V. Ch. Quetz)
    While the discovery of a starless planet alone is noteworthy,  scientists think PSO J318.5-22 will provide insight into how the so-called gas giant planets such as Jupiter and Saturn develop.

    “Planets found by direct imaging are incredibly hard to study, since they are right next to their much brighter host stars. PSO J318.5-22 is not orbiting a star so it will be much easier for us to study. It is going to provide a wonderful view into the inner workings of gas-giant planets like Jupiter shortly after their birth,” said Dr. Niall Deacon of the Max Planck Institute for Astronomy in Germany and a co-author of the study.

    PSO J318.5-22 was identified from its faint and unique heat signature by the Pan-STARRS 1 (PS1) wide-field survey telescope on Haleakala, Maui. Follow-up observations using other telescopes in Hawaii show that it has properties similar to those of gas-giant planets found orbiting around young stars.

    The discovery paper of PSO J318.5-22 is being published by Astrophysical Journal Letters.

    You May Like

    Former US Envoys Urge Obama to Delay Troop Cuts in Afghanistan

    Keeping troop levels up during conflict with both Taliban and Islamic State is necessary to support Kabul government, they say

    First Lady to Visit Africa to Promote Girls' Education

    Michele Obama will be joined by daughters and actresses Meryl Streep and Freida Pinto

    Video NYSE Analyst: Brexit Will Continue to Place Pressure on Markets

    Despite orderly pricing and execution strategy at the New York Stock Exchange, analyst explains added pressure on world financial markets is likely

    This forum has been closed.
    Comment Sorting
    Comments
         
    by: LukeSkywalker from: earth
    October 10, 2013 10:44 AM
    DUDE! It's the DEATHSTAR!!!

    Featured Videos

    Your JavaScript is turned off or you have an old version of Adobe's Flash Player. Get the latest Flash player.
    Brexit Vote Plunges Global Markets Into Uncharted Territoryi
    X
    June 24, 2016 9:38 PM
    British voters plunged global markets into unknown territory after they voted Thursday to leave the European Union. The results of the Brexit vote, the term coined to describe the referendum, caught many off guard. Analysts say the resulting volatility could last for weeks, perhaps longer. Mil Arcega reports.
    Video

    Video Brexit Vote Plunges Global Markets Into Uncharted Territory

    British voters plunged global markets into unknown territory after they voted Thursday to leave the European Union. The results of the Brexit vote, the term coined to describe the referendum, caught many off guard. Analysts say the resulting volatility could last for weeks, perhaps longer. Mil Arcega reports.
    Video

    Video Orlando Shooting Changes Debate on Gun Control

    It’s been nearly two weeks since the largest mass shooting ever in the United States. Despite public calls for tighter gun control laws, Congress is at an impasse. Democratic lawmakers resorted to a 1960s civil rights tactic to portray their frustration. VOA’s Carolyn Presutti explains how the Orlando, Florida shooting is changing the debate.
    Video

    Video Tunisian Fishing Town Searches for Jobs, Local Development Solutions

    As the European Union tries to come to grips with its migrant crisis, some newcomers are leaving voluntarily. But those returning to their home countries face an uncertain future.  Five years after Tunisia's revolution, the tiny North African country is struggling with unrest, soaring unemployment and plummeting growth. From the southern Tunisian fishing town of Zarzis, Lisa Bryant takes a look for VOA at a search for local solutions.
    Video

    Video 'American Troops' in Russia Despite Tensions

    Historic battle re-enactment is a niche hobby with a fair number of adherents in Russia where past military victories are played-up by the Kremlin as a show of national strength. But, one group of World War II re-enactors in Moscow has the rare distinction of choosing to play western ally troops. VOA's Daniel Schearf explains.
    Video

    Video Experts: Very Few Killed in US Gun Violence Are Victims of Mass Shootings

    The deadly shooting at a Florida nightclub has reignited the debate in the U.S. over gun control. Although Congress doesn't provide government health agencies funds to study gun violence, public health experts say private research has helped them learn some things about the issue. VOA's Carol Pearson reports.
    Video

    Video Trump Unleashes Broadside Against Clinton to Try to Ease GOP Doubts

    Recent public opinion polls show Republican Donald Trump slipping behind Democrat Hillary Clinton in the presidential election matchup for November. Trump trails her both in fundraising and campaign organization, but he's intensifying his attacks on the former secretary of state. VOA National Correspondent Jim Malone reports.
    Video

    Video Muslim American Mayor Calls for Tolerance

    Syrian-born Mohamed Khairullah describes himself as "an American mayor who happens to be Muslim." As the three-term mayor of Prospect Park, New Jersey, he believes his town of 6,000 is an example of how ethnicity and religious beliefs should not determine a community's leadership. Ramon Taylor has this report from Prospect Park.
    Video

    Video Internal Rifts Over Syria Policy Could Be Headache for Next US President

    With the Obama administration showing little outward enthusiasm for adopting a more robust Syria policy, there is a strong likelihood that the internal discontent expressed by State Department employees will roll over to the next administration. VOA State Department correspondent Pam Dockins reports.
    Video

    Video Senegal to Park Colorful ‘Cars Rapide’ Permanently

    Brightly painted cars rapide are a hallmark of Dakar, offering residents a cheap way to get around the capital city since 1976. But the privately owned minibuses are scheduled to be parked for good in late 2018, as Ricci Shryock reports for VOA.
    Video

    Video Florida Gets $1 Million in Emergency Government Funding for Orlando

    The U.S. government has granted $1 million in emergency funding to the state of Florida to cover the costs linked to the June 12 massacre in Orlando. U.S. Attorney General Loretta Lynch announced the grant Tuesday in Orlando, where she met with survivors of the shooting attack that killed 49 people. Zlatica Hoke reports.
    Video

    Video How to Print Impossible Shapes with Metal

    3-D printing with metals is rapidly becoming more advanced. As printers become more affordable, the industry is partnering with universities to refine processes for manufacturing previously impossible things. A new 3-D printing lab aims to bring the new technology closer to everyday use. VOA's George Putic reports.
    Video

    Video Big Somali Community in Minnesota Observes Muslim Religious Feast

    Ramadan is widely observed in the north central US state of Minnesota, which a large Muslim community calls home. VOA Somali service reporter Mohmud Masadde files this report from Minneapolis, the state's biggest city.

    Special Report

    Adrift The Invisible African Diaspora