In short, the corona is the outermost layer of the solar atmosphere. The corona is usually obscured by bright light from the surface of the sun. This makes it difficult to see without using special ...

The briefest of celestial alignments can captivate us with their beauty and wonder. The anticipation was palpable as the total solar eclipse of 20204 began. Cameras were ready to capture this ...

The celestial event, which will see the moon change to rusty red hues, will occur in the U.S. on the night of March 13-14. According to NASA, another total lunar eclipse won't be visible in the U ...

The moon will shroud parts of North America in darkness when the total solar eclipse happens today, April 8. Here's what causes the phenomenon and why.

A rare celestial event is about to take place over the morning skies of the United States on Monday involving the Sun and the planet Mercury. According to NASA, Mercury will pass directly between ...

-- Mercury is set to transit the sun, a celestial event so rare it happens just 13 times in a century. The planet closest to the sun will begin its crossing at 7:12 a.m. ET Monday.