What was the first spacecraft to orbit Earth?

The first spacecraft to orbit Earth was Sputnik 1. It was launched by the Soviet Union on October 4, 1957.

Sputnik 1 was a small, metal ball about the size of a basketball. It had four radio antennas that sent out a beep every second. It orbited Earth once every 96 minutes. It stayed in orbit for about 3 months before it fell back to Earth and burned up in the atmosphere.

Sputnik 1 was a big deal. It was the first time that humans had put something into space that orbited Earth. It showed that it was possible to send objects into space, and it started a new era of space exploration. It was a major milestone in the history of space exploration. Sputnik 1 is still remembered today as a symbol of the Cold War, but it is also remembered as a symbol of human ingenuity and achievement.

What was the first spacecraft to land on the Moon?

The first spacecraft to land on the Moon was called Apollo 11. It was sent by NASA, the space agency of the United States, in 1969. The spacecraft had a special module called the Lunar Module that carried astronauts Neil Armstrong and Buzz Aldrin to the Moon's surface. They became the first people to set foot on the Moon!

How do astronauts eat in space?

Astronauts in space eat special food that is made to be very easy to eat in a zero-gravity environment. The food is often in small packages or pouches, and most of it is freeze-dried or dehydrated. This means that water is taken out of the food to make it lighter and easier to store. When the astronauts are ready to eat, they add water to the food and it becomes ready to eat again.

How do rockets work?

Rockets work by a principle called "action and reaction." When fuel burns inside a rocket's engines, it creates a high-pressure gas that is forced out of the rocket's bottom at very high speeds. According to Newton's Third Law of Motion, for every action, there is an equal and opposite reaction. So, when the gas shoots out of the bottom of the rocket, it pushes the rocket upwards with a lot of force.

What is the International Space Station used for?

The International Space Station, also known as the ISS, is a laboratory that orbits around the Earth. It is used by scientists and astronauts from different countries to study many things about space, such as how the human body reacts to living in space, how plants grow in space, and how different materials behave in the absence of gravity.