Everyone was going on and on about this big “Ring of Fire” solar eclipse that was supposed to happen while I was scheduled to ...

Though the 22-degree halo is the most common, it is just one of several atmospheric optical effects—others include sun ...

The European Space Agency (ESA)'s Solar Orbiter mission has obtained a stunning high-res image of the sun's upper atmosphere.

Perhaps the best known of all comets is Halley, correctly pronounced so that it rhymes with rally, not daily. It is named after the 17th-18th century astronomer Edmond Halley. This ...