Practical Application Scientists observe the sun to forecast space weather and solar storms. Real World Examples The Earth’s atmosphere protects us from solar storms. However, telecommunications and navigational systems can be impacted by the electrically-charged particles and harmful rays from the sun. Challenge Yourself One thousand Earths fit into Jupiter, and one thousand Jupiters fit into the Sun. Can you calculate how many Earths would fit inside of the Sun? Some sunspots are larger than the size of Earth. Did You Know ? AT HOME EXPERIMENT Exhibit Key Concept Observation