The sun may be the key to all life on Earth, but it is not the reason global temperatures have been rapidly rising in the ...

Credit: NASA/Sally Bensusen Despite being so hot, the corona is less than a millionth as bright as the Sun. As you walk away ...

But the average temperature of the Sun's corona is up to 300,000 K, and it can reach temperatures in the millions of degrees during high-energy solar flares. Despite being so hot, the corona is ...

The Earth as we know it came into being around 4.5 billion years ago when gravity condensed a mass from the cloud of hot ...