Why the US total solar eclipse is so special

On August 21, the US will experience the first coast-to-coast total eclipse in nearly a century. A solar eclipse occurs when the moon passes between the sun and earth and blocks the sun. For those lucky enough to witness it in America it will be an unique experience, says Affelia Wibisono, astronomer at the Royal Observatory Greenwich. Total Solar Eclipse in Australia 2012 Credit: Taxi Japan/Taxi Japan "They will see the sky get darker. It will feel l