Gravity and Weightlessness: Why Astronauts Float in Space

The video explains gravity as a universal force discovered by Sir Isaac Newton, which keeps objects grounded on Earth. It discusses the absence of gravity in space, causing astronauts to float and experience space sickness. The video also highlights Neil Armstrong's historic moon landing in 1969.

What is the primary role of gravity on Earth?

• To repel objects

• To make objects float

• To create wind

• To keep objects grounded

Who discovered the force of gravity?

• Albert Einstein

• Sir Isaac Newton

• Nikola Tesla

• Galileo Galilei

What phenomenon allows astronauts to float in space?

• Magnetic fields

• Strong winds

• Lack of air

• Zero gravity

What is a common issue astronauts face when adapting to space?

• Lack of oxygen

• Space sickness

• Excessive heat

• High pressure

Who was the first person to walk on the moon?

• Michael Collins

• Buzz Aldrin

• Yuri Gagarin

• Neil Armstrong