At a time when our earliest human ancestors mastered walking upright the heart of our Milky Way galaxy underwent a titanic eruption, driving gases and other material outward at 2 million miles per hour. Now, at least 2 million years later, astronomers are witnessing the aftermath of the explosion: billowing clouds of gas towering about 30,000 light-years above and below the plane of our galaxy. Our Hubble Space Telescope maps the velocity and composition of these mysterious lobes. Details: go.nasa.gov/14qMJHA #aas225 #hubble25
Posted on: Tue, 06 Jan 2015 15:29:24 +0000
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