History of Space Exploration | Space Sxploration Timeline

What is Space History – The word space (Space Exploration) refers to the vast infinite space that extends beyond the Earth’s atmosphere. The Moon has probably been the largest astronomical object in space.

Because often in scientific novels and other literary works, the final destination of fictional astronauts was the moon. Will power inspired man to ‘exploration’ of space.

Read: Names and serial numbers of solar system planets. Facts about Solar System Planets Name

Space Exploration

Following are the events in the history of Space Exploration

The program of space exploration started in the year 1957.

This year the former Soviet Union of Russia sent an artificial satellite named Sputnik-1 into space on 4 October.

This satellite started revolving around the Earth in an elliptical space, for which the value of the ground high point (Apogee) is 941 km. And the value of the land low point (Perigee) is 227 km. Was .

What is Orbit | What is the orbit or orbit

The path around the earth through which the satellite orbits is called an orbit. The orbit of a satellite is circular or ellipsoid.

The components that define an orbit are the ground high point, the ground low point and the inclination, which is defined below.

  1. Land High Point (Apogee)
  2. Land Low Point (Perigee)
  3. Inclination


Land High Point Apogee

The point which is farthest from the earth in the orbit of a satellite is called apogee.

Land Low Point Perigee

The point closest to the earth in the orbit of a satellite is called the perigee.

Lnclination Incline

The angle made by the orbit of a satellite with the equator is called inclination. It is denoted by alpha (c).

After the first Soviet satellite, the former Soviet Union launched the giant-sized satellite Sputnik II on 3 November 1957.

Read – Earth and Space Science related information

A dog named ‘Laika’ was also sent in this satellite. The weight of this satellite is 500 kg. Was .

The main reason for sending Sputnik-2 (Sputnik II) was to study its effects on body temperature, blood pressure and heart rate.

Its study helped in obtaining important data in the field of satellite launch, whose use paved the way for human in space flight.

The United Nations (USA) also became active in the field of satellite launch and on 31 January 1958 it launched a spacecraft named Explorer-1.

By which 1000 kms. Important information related to the density, temperature and composition of the Earth’s atmosphere was obtained up to the height of Which was named Explorer.

The name Explorer was given because it was mainly sent to search for other celestial bodies and to search for the possibility of life in space.

Spaceflight History:

In order to know about the necessary events related to space, man also stepped into space from space flight between 1960 and 1970.

Yuri Gagarin was the Soviet Union’s ‘Yuri Gagarin’ as the first cosmonaut on April 12, 1961.

It took about 4 years to send the first man to space from the first unmanned space flight.

After Yuri Gagarin, America sent a person named Alan Shepard in its spacecraft on May 5, 1961.

After 1965, Soviet Russia was the leader in space exploration compared to America.

Valentina Tereshkova of the former Soviet Union made a space flight on 4 December 1963 in Vostok 6.

Valentina Terishlova, who got the distinction of being the first woman astronaut in space.

On March 18, 1965, Alexey Leonov of Soviet Russia walked into space.

On July 16, 1969, America launched ‘Apollo-2’, in which three astronauts were sent, who were ‘Neil Armstrong,’ Edwin Aldrin (‘Buzz Aldrin’) and ‘ Michael Collins was.

Neil Armstrong set foot on the moon for the first time (Neil Armstrong on the moon). After 8 minutes of them, Edwin Aldrin (Buzz Aldrin) landed on the moon.

The first Indian astronaut was Squadron Leader Captain Rakesh Sharma (farst Indian astronaut on the moon).

In the 80s, the establishment of permanent space centers and the development of the space shuttle took place in the field of space science.

These space shuttles are sometimes used to take astronauts to space.

The main achievements of the 80s were the growth in the areas of application of satellite technology, the establishment of a permanent astronomical observatory in space and the launch of the Voyager II spacecraft.

With the help of this Voyager spacecraft, their pictures were sent to Earth after passing very close to all the planets.

A special achievement was achieved in the month of April 1992, when the errors generated in the satellite already sent into space by a team of US astronauts were rectified and after rectification, the satellite was again placed in its orbit.

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