NASA, ESA, and the Hubble Heritage Team (STScI/AURA)
  • Sky Light: Biggest Solar Flare in Years

    The Hubble telescope has recorded a new view of the "Necklace" nebula, the remnants of a star that aged and expanded, consuming a companion star that orbited it. In this composite image, shot on July 2, 2011, hydrogen gas is blue, oxygen is green, and nitrogen is red.
    NASA, ESA, and the Hubble Heritage Team (STScI/AURA)
  • Celestial Sightings: What Was in the Sky?

    The sun gave off the largest solar flare in five years on Aug. 9, 2011, sending a mass of charged particles into space. It was not pointed toward Earth, which is protected anyhow by its atmosphere and strong magnetic field, but scientists say the sun is becoming more active after a long quiet period.
    NASA/Solar Dynamics Observatory
  • Sky Sightings: Eclipse, Aurora and More

    Lunar eclipse of June 15, 2011, visible from Africa and Asia was shown on Google's homepage.
    Google
  • Sky Phenomenons

    The upside-down rainbow, or circumzenithal arc, is a visual effect similar to normal rainbows, except that it only takes shape when the sun is lower than 22 degrees radius over the horizon.
    NOAA
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PHOTO: The scene near the finish line of the Boston Marathon is seen in this April 16, 2013 file photo. Inset, suspects Tamerlan and Dzhokhar Tsarnaev are seen. Tamerlan Tsarnaev died after a gunfight with police and Dzhokhar Tsarnaev, was captured.
Elise Amendola/AP Photo; Inset: Lowell Sun, FBI/AP Photo
PHOTO: The first explosion knocked down a runner at the finish line of the 117th Boston Marathon.
John Tlumacki/The Boston Globe via Getty Images
PHOTO: Pulaski Township Police Sgt. Chad Adam seen here in this undated Facebook photo, went undercover as an Amish woman.
Pulaski Township Police Department/Facebook
PHOTO: The Earths shadow is cast over the surface of the moon as a total lunar eclipse is seen though a Magnolia tree top in the sky over Tyler, Texas, April 15, 2014.
Dr. Scott M. Lieberman/AP Photo