The Sun appears to be a burning ball of fire, but it has an internal structure. The visible surface is known as the photosphere, and it heats up to approximately 6,000 degrees Kelvin. The convective zone lies beneath that, where heat slowly moves from the inner Sun to the surface and cooled material falls back down in columns. This region begins at 70% of the radius of the Sun. The radiative zone lies beneath the convection zone. Heat can only travel through radiation in this zone. The Sun's core extends from the Sun's centre to a distance of 0.2 solar radii. Temperatures reach 13.6 million degrees Kelvin here, and hydrogen molecules fuse to form helium.
Related Facts
Ashwagandha reduces blood sugar and fat levels.
Soap and dynamite have a long history together.
The official languages are Chinese and English.
Dust mites resemble tiny spiders.
Ebook sales have plummeted. (Sorry, Internet trolls!)
Did you know.... We are all composed of stardust.
Did you Know? Once Japan and China banned the kite flying!
Fish Pass Through Niagara Falls
Do you Know about the iPhone EULA?
The female with Longest legs
Dental crowding is a significant breed issue.
Butterfly wings protect them from predators.
Can You Give Your Cat Too Much Catnip?
METALS WERE USED IN TRUMPETS AS EARLY AS 1500 BCE.
In the 1970s, Hot Pockets were created.
In the previous seven decades, about 90 different commercial airliners have gone missing.
Did you Know? Dabbawallahs provide an astonishing number of lunches.
Kiwi can support strong bones.
Genghis Khan conquered India, right?
Did you Know? There is a very strange reason why Captain America isn't eating in a post credit scene of The Avengers.
The most bizarre, cruel method imaginable is used by the mantis shrimp to murder its prey.
One of nature's rock stars is broccoli.
A human could swim through a blue whale's veins.
Sunflowers React to the Sun
Nobody expected that the first gravitational waves would be observed from a binary black hole system.