The long-awaited eclipse moved across the United States, cutting a 70-mile-wide path of complete darkness across the country from Oregon to South Carolina for two minutes Monday.
On a sunny day, California gets up to 40 percent of its energy from solar power, so Monday's total eclipse isn't just a scientific spectacle, it's a major concern for the state's power grid.
During the day on Aug. 21, large swaths of farmland will be plunged into darkness, and temperatures will drop about 10 degrees. And scientists are waiting to see what happens on the ground.
Newton and Einstein had big ideas, but needed an eclipse to prove them. And scientists are still pursuing secrets of the universe one eclipse at a time.
A small number of passionate "shadow lovers" roam the world to be at exactly the right place when the moon blots out the sun. One man has seen 33 — and calls each "one of the top events of my life."
You'd think that after hundreds of years of watching total solar eclipses, scientists would know all they'd need to about that particular phenomenon. You'd be wrong.
Cold War-era tactical bombers specially equipped with stabilized telescopes will fly over the central United States on Aug. 21, taking detailed observations of the Sun's atmosphere.
A total solar eclipse is one of the most magnificent sights you can ever see. But you need the right kind of eye protection, and some of what's being sold out there isn't safe.
There's something deeply moving about watching the sun become progressively covered by the moon — and you have a rare chance to see this in the U.S. on Aug. 21, says astrophysicist Marcelo Gleiser.
NASA says a partial eclipse will be visible throughout the country. But within a "path of totality" from Oregon to South Carolina, an eclipse industry is booming.
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