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  • surface of Pluto
  • illustration of New Horizons journey to Pluto
Your search has returned 15 articles:
  • News

    Pluto’s icy landscape comes into view

    LAUREL, Md. — Alan Stern, head of the New Horizons mission to Pluto, had just three words for the team of scientists and engineers assembled with him on July 14: “We did it.”

    At 8:52:37 p.m. Eastern time, a radio antenna near Madrid received the first signal from the spacecraft since it buzzed the dwarf planet. After decades of planning and a 9.5-year journey...

    07/26/2015 - 06:00 Planetary Science
  • Feature

    Rendezvous with Pluto

    View timeline

    Tiny, far-flung Pluto is about to have a visitor — at least for a few hours.

    On July 14, NASA’s New Horizons spacecraft will reach the dwarf planet and try to learn all it can about Pluto and its five known moons. Then the probe will leave Pluto behind, vanishing into the frigid darkness beyond the planets.

    In its wake, New Horizons will introduce Earth to the...

    06/12/2015 - 11:55 Planetary Science, Astronomy
  • Feature

    Deep network

    Gas bubbles effervesce from a mound of muck on the seafloor in a deep submarine canyon off the west coast of Canada. Microbes beneath the sediment belch the bubbles after feasting on the ancient remains of algae, sea critters and their poop: a primordial stew that’s been simmering since long before humans walked the Earth.

    This gassy oasis attracts an odd collection of critters. Worms...

    10/04/2013 - 15:00 Earth, Technology
  • Feature

    The 3-D Printing Revolution

    Joshua Pearce takes unusual satisfaction in strolling through Walmart. The shelves laden with toys, household items, tools and clothing inspire in him a certain smugness, a pride in American entrepreneurship. But it’s not because Pearce admires the chain as an empire built by a self-made man. Pearce swells with pride at Walmart because the store is full of mass-manufactured objects that he...

    02/20/2013 - 23:31 Technology, Computing
  • Feature

    Breaking it Down

    Suppose there was a fourth little pig. This one was a physicist. Unlike his brother the engineer, who built a house out of tried-and-true bricks, the physicist pig chose a building material by doing calculations based on fundamental principles. He settled on a substance made from silicon and oxygen, an abundant material with high bond strength and the aesthetic bonus of transparency. It was...

    01/29/2010 - 14:02
  • News

    Largest known prime number found

    Editor’s note: This story was originally posted on Science News online as a Math Trek column September 20.

    Here’s a number to savor: 243,112,609-1.

    Its size is mind-boggling. With nearly 13 million digits, it makes the number of atoms in the known universe seem negligible, a mere 80 digits.

    And its form is tidy and lovely: 2n-1.

    But its true beauty is...

    09/28/2008 - 10:39
  • Math Trek

    Largest known prime number found

    Here’s a number to savor: 243,112,609-1.

    Its size is mind-boggling. With nearly 13 million digits, it makes the number of atoms in the known universe seem negligible, a mere 80 digits.

    And its form is tidy and lovely: 2n-1.

    But its true beauty is far grander: It is a prime number. Indeed, it is the largest prime number ever found.

    The Great Internet...

    09/20/2008 - 11:06 Numbers
  • Feature

    Violent Developments

    Henry was headed for serious trouble. The 15-year-old provoked an endless series of fights at school and frequently bullied girls. Teachers regularly suspended him for his classroom disruptions. Older students taunted Henry in the hallways by calling him a sexual pervert or jeered him for having been held back in kindergarten. At home, his father browbeat and denigrated the boy, while his...

    05/23/2006 - 09:53 Other
  • Feature

    That's One Weird Tooth

    What Martin Nweeia noticed first when he encountered narwhals, he says, was the sound. In May 2000, as spring was just reaching Baffin Island in the Canadian Arctic, a famed local hunter took Nweeia out on the ice searching the open water for those tusk-bearing, high-Arctic whales. "I was sitting on a bucket out on the ice doing polar bear watch," he says. At that time of year, daylight lasts...

    03/21/2006 - 14:43 Animals
  • Feature

    Science News of the Year 2005

    Science News of Yesteryear

    Anthropology & Archaeology

    Astronomy

    Behavior

    Biomedicine

    Botany & Zoology

    Cell & Molecular Biology

    Chemistry

    ...
    12/20/2005 - 03:53 Humans & Society