"Are we alone? What's out there?" Looking up at the stars, people have always wanted to learn more about space, and scientists have been working hard to find the secrets of the universe. Here we're going to go through a timeline of the important moments of space exploration.
1927 | 1990 | 2016 | 2023 |
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Georges Lemaitre | NASA sent the Hubble | China began to | China sent off |
first suggested the Big Bang Theory. | Space Telescope. | use FAST. | Shenzhou-16 |
What is the Big Bang Theory?
The Big Bang Theory is an idea about how our universe began. Many scientists believe that everything in the universe was pressed together and then it separated into smaller pieces very quickly about 14 billion years ago to create the universe. The Big Bang is thought to be the beginning of everything in the universe.
What is the Hubble Space Telescope?
The Hubble Space Telescope was put into space in 1990. Hubble is as long as a large school bus and weighs as much as two elephants. In order to stay above the atmosphere, it travels around the earth at about 5 miles a second. Hubble is able to get clear pictures of faraway stars. A picture called "Hubble Ultra Deep Field" shows some of the farthest galaxies. Pictures from Hubble help scientists learn more about the universe.
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China's Five-hundred-metre Aperture Spherical radio Telescope is better known as FAST. It is in Guizhou, China，and it has been used since September 25th, 2016. Its 500-metre dish is the world's largest single-dish radio telescope. Scientists can use it to search for signals of communication that are not coming from the earth. If scientists find such things, maybe there is life somewhere else in the universe!
What is Shenzhou-16?
Shenzhou-16 manned spaceship was sent into space from Jiuquan on May 30th, 2023. Shenzhou-16 connected with Tianhe Core Module 6. 5 hours later, with three astronauts inside it. Surprisingly, one of the three astronauts is a university teacher. In the next months, the three astronauts will do some scientific tests and carry out several spacewalks outside China's Space Station. Besides, they will give science lessons to students on the earth from the faraway space.
