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Which is the first artificial satellite to orbit earth?

Which is the first artificial satellite to orbit earth? Correct Answer Sputnik - I

The correct answer is Sputnik - I​.

 Key Points

  • The Sputnik 1 spacecraft was the first artificial satellite successfully placed in orbit around the Earth.
  • It was launched from Baikonur Cosmodrome at Tyuratam (370 km southwest of the small town of Baikonur) in Kazakhstan, then part of the former Soviet Union.
  • The Soviet Union launched it into an elliptical low Earth orbit on 4 October 1957.
  • It orbited for three weeks before its batteries died and then orbited silently for two months before it fell back into the atmosphere on the 25th of December 1957.

Important Points

  • Discoverer 1 was the first of a series of satellites that were part of the CORONA reconnaissance satellite program.
  • It was launched on a Thor-Agena A rocket on 28 February 1959 at 21:49:16 GMT from Vandenberg Air Force Base in California.
  • Explorer 1 was the first satellite launched by the United States and was part of the U.S. participation in the International Geophysical Year.
  • Vanguard 1 launched on 17 March 1958 at 12:15:41 UT from the Atlantic Missile Range in Cape Canaveral Florida.

Related Questions

This are the following statements given regarding satellite’s motion a. A satellite in geostationary orbit lies in the same plane with equator b. A satellite in geosynchronous orbit lies in the same plane with equator c. A satellite in geostationary orbit does not lie in the same plane with equator, it is inclined at some angle from plane of equator d. A satellite in geosynchronous orbit does not lie in the same plane with equator, it is inclined at some angle from plane of equator Choose one of the following options
Satellites used for telecommunication relay are kept in a geostationary orbit. A satellite is said to be on such an orbit when: 1. The orbit is geosynchronous. 2. The orbit is circular. 3. The orbit lies in the plane of the Earth's equator. 4. The orbit is at an altitude of 22,236 km. Select the correct answer using the codes given below: 
What is METSAT, the first exclusive weather satellite created by ISRO? A. Geosynchronous Satellite B. The Earth's lower orbit satellite C. Polar Orbit Satellite D. Deep Space Probe Satellite
Consider the following statements about Low Earth Orbit (LEO) 1. It is an Earth-centered orbit with an altitude of 2,000 km or less 2. The International Space Station conducts operations in LEO 3. Major disadvantage of Low Earth orbit is that it requires a high amount of energy for satellite placement 4. Spy satellites cannot use LEO Which of the above statements is/are not correct?
On 17th December 2020, India recently launched the CMS-01 communication satellite into the geostationary Transfer Orbit. What statements is/are CORRECT regarding the satellite? 1. The satellite was launched on a PSLV-C50 launch vehicle. 2. The satellite will provide telecom services in the extended C-Band of the frequency spectrum. 3. Is India's 40th communication satellite that will replace the functions of GSAT-12 launched in 2013. Select the correct answer using the code given below. (a) 1 only (b) 2 only (c) 3 only (d) Both 1 and 2
On 17 January 2021, Virgin Orbit the California-based satellite launch company recently launched its Launcher One rocket to orbit. What statements is/are CORRECT regarding the rocket? 1. It places the satellites in Sun Synchronous Orbit 2. It is the first all liquid-fuelled air-launched orbital rocket 3. It is capable of carrying payloads of up to 500–600 kg to a 310-mile-high (500-km) polar orbit Select the correct answer using the code given below. (A) 1 only (B) 2 only (C) Both 1 and 2 (D) Both 2 and 3
Which of the following pairs is/are correct? 1. When a satellite is at its closest point from the earth, it is at the apogee of the orbit. 2. When a satellite is at its farthest point to the earth, it is at the perigee of the orbit. Select the correct answer using the code given below.
Consider the following statements.
1. The time period of satellite does not depend on the radius of the orbit.
2. The orbital velocity is inversely proportional to the square root of the radius of the orbit.
3. The orbital velocity of a satellite increases with the radius of the orbit.
Which of the statement(s) given above is/are correct?
S1: Today the Earth has many satellites besides the moon.
P: But the pull of the Earth keep them from doing so.
Q: The artificial satellites do not fall because they are going too fast to do so.
R: They are artificial satellites made by man and very much smaller than the man.
S: As they speed along, they tend to go straight off into space.
S6: As a result, they travel in an orbit round the Earth.

The Proper sequence should be:
What is the area swept by a satellite in an elliptical orbit around earth at t = T/5, where T is the time period of the orbit? Given, semi-major axis and semi-minor axis of the orbit are 9,000 km and 4,000 km respectively.