Steven George

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5 Sky Events This Week: Saturn Poses With Moon, Comet Coming, Giant Lunar Wall

Wildlife<p>This Cassini image of Saturn taken in 2010 shows a monster storm in its northern atmosphere. Now a new study has revealed details about the tempest’s explosive power: its ability to churn up water ice from great depths. This week sky-watchers get to see the ringed planet for themselves …

New Role for Disabled Kepler? Finding Exotic Alien Worlds

Crippled spacecraft could unearth new planets by detecting warped starlight.<p><b>Kepler's planet-hunting days may not be over just yet.</b><p>A technical failure in May left the NASA spacecraft, launched in 2009 to search for exoplanets, or planets outside our solar system, permanently crippled. But it could …

One-Way Ticket to Mars Attracts Global Attention

<b>There appears to be no shortage of wannabe planetary colonists willing to live—and possibly die on Mars.</b><p>Mars One—a controversial project that aims to send humans on a one-way trip to the Red Planet by 2023—has garnered interest from 202,586 folks from more than 140 countries who sent in video …

Did a Comet Really Kill the Mammoths 12,900 Years Ago?

Did the planetary upheaval 12,900 years ago come from the heavens—or Earth?<p><b>Why did mammoths, mastodons, and other mega-beasts vanish from North America?</b><p>Was it because:<p>1) humans killed them;<p>2) they couldn't hack the climate after the Ice Age ended; or<p>3) an exploding comet ignited continent-wide …

Voyager 1 Leaves Solar System, NASA Confirms

NASA’s far-flung spacecraft passed into interstellar space last year.<p><b>It’s official: Voyager 1 has slipped from the solar system.</b><p><b>Launched in 1977, Voyager 1 traveled past Jupiter and Saturn and is now more than 11.66 billion miles (18.67 billion kilometers) from the sun, becoming the first</b> …