The sun is so incomprehensibly big that it's almost pointless to bother trying to imagine its size. Our star is about 860,000 miles across. It's so big that 1.3 million Earths could fit inside it.

Related: Earth's sun: Facts about the sun's age, size and history "AI can't replace observations, but it can help us get the most out of the data that we've already collected," Robert Jarolim, who ...