Sun 101 | National Geographic

What was the Sun formed from?

• Ice and rock

• Dust and gas

• Water and oxygen

• Molten metal

Which element makes up the largest percentage of the Sun's atoms?

• Helium

• Carbon

• Hydrogen

• Nitrogen

How much of the total mass in our solar system does the Sun contain?

• About 50%

• About 75%

• About 99.8%

• About 90%

What will the Sun eventually become after it runs out of hydrogen fuel and expands?

• A black hole

• A red giant

• A white dwarf

• A supernova