The video tutorial explains celestial bodies, focusing on satellites. It covers both man-made and natural satellites, such as the moon, and highlights the historical significance of Sputnik 1, the first artificial satellite launched by the Soviet Union in 1957. The tutorial also discusses the various applications of satellites, including military, astronomical, and communication purposes, and their role in observing Earth from space.

What is a celestial body that orbits a larger one commonly called?

• Asteroid

• Comet

• Satellite

• Meteor

Which of the following can be considered a natural satellite?

• International Space Station

• The Moon

• Sputnik 1

• Hubble Space Telescope

In what year did the Soviet Union launch Sputnik 1?

• 1957

• 1961

• 1945

• 1972

What is one of the primary purposes of communication satellites?

• To observe the Earth from space

• To provide energy to Earth

• To monitor weather patterns

• To explore other planets

Which type of satellites are used for military purposes?

• Navigation satellites

• Weather satellites

• Communication satellites

• Astronomical satellites