The video explores the evolution of solar power in space missions, starting with early solar cells in the 1950s and their application in the Vanguard I satellite. It highlights NASA's advancements in solar panel technology, including the development of retractable solar arrays tested on the Space Shuttle Discovery. The video also covers the use of solar panels on the International Space Station and introduces future technologies like the Roll-out Solar Array (ROSA), emphasizing the importance of renewable energy both in space and on Earth.

What was the first spacecraft to use solar cells, and when was it launched?

• Vanguard I, 1958

• Apollo 11, 1969

• Sputnik I, 1957

• Explorer I, 1958

What was a significant feature of the solar array wing developed in the 1970s?

• It was made of glass.

• It was powered by nuclear energy.

• It was heavier than previous panels.

• It could retract like an accordion.

Which space shuttle was responsible for testing the new solar array wing in 1984?

• Atlantis

• Discovery

• Columbia

• Challenger

How many solar cells are spread across the ISS panels?

• Over 300,000

• Over 400,000

• Over 200,000

• Over 100,000

What is the new technology being used to upgrade the ISS solar panels?

• Fold-out Solar Array

• Roll-out Solar Array

• Pop-out Solar Array

• Slide-out Solar Array