sun
What is the Sun primarily composed of?
Hydrogen
How old is the Sun estimated to be?
4.6 billion years
What is the average surface temperature of the Sun?
5,500 degrees Celsius
What process powers the Sun?
Fusion
How far is the Sun from Earth?
93 million miles
What is the name of the layer of the Sun where energy is transported by photons?
Radiative zone
How long does it take for sunlight to reach Earth?
8 minutes
What is the Sun's approximate mass compared to Earth?
300,000 times
Which planet is closest in size to the Sun?
Jupiter
What is the layer of the Sun above the photosphere called?
Chromosphere