Top 7 space agencies in the world -

1.NASA - National Aeronautics and Space Administration 

2.RFSA - Russian Federation Space Agency 

3.ISRO - Indian Space Research Organization 

4.ESA - European Space Agency 

 5.CNSA - China National Space Administration 

 6.JAXA - Japan Aerospace Exploration Agency 

 7.SSI - Space Studies Institute in California 

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●Top 5 space agencies in the world 

●Top 10 space agencies in the world 

1.NASA 

 ■ Early Years

 The origins of NASA date back to May 25th, 1958, when President Dwight D. Eisenhower signed into law the National Aeronautics and Space Act. This act created NASA and charged the organization with accomplishing several objectives including exploring space, conducting scientific experiments aboard Earth orbit, and supporting human activity on other planetary bodies.

 ■ Mission

 NASA's mission is to advance aeronautics and space science through innovative research, creative technology, and efficient use of resources. To this end, NASA conducts a variety of research projects, develops technologies for civilian and military uses, and explores space travel. NASA's current goals include sending astronauts back to the moon by 2024, finding habitable planets outside our solar system, and eventually settling Mars.

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💙Mission Mangal 

2.RFSA

Russian Federal Space Agency (Roscosmos; ) is the central executive body responsible for the administration of the Russian federal space program and its constituent agencies. Roscosmos was founded in 1992 under the Soviet Ministry of Defence after the dissolution of the USSR. Its first head was Anatoly Perminov. In April 1994, Yeltsin signed into law a bill renaming the agency, making it a successor to the Soviet Union's  Intergovernmental Space Program, which had been established in 1972.

3.ISRO

India Space Research Organization (ISRO) is the Indian space agency that has been responsible for many scientific achievements including satellite launches, astronomy, communication technologies, and navigation systems. They have developed advanced tracking and communications satellites including Chandrayaan-1, ISRO's first lunar mission; Mangalyaan, India’s Mars Orbiter Mission; GSAT-7, India's seventh communication satellite; IRNSS 1A, the first regional Navstar Global Positioning System; RISAT 2B, India's second Earth observation satellite and RISAT-PSLV, India’s first dedicated remote sensing launch vehicle.

 4.ESA

 ESA is a group of 22 states of Europe aiming the exploration of space . Established in 1975 and the headquarters of the ESA located in Paris and france.

5.CNSA

The China National Space Administration (CNSA) was founded on November 29, 1958. CNSA's first satellite, Dong Fang Hong 1 (DFH-1), was launched on May 16, 1959. On October 11, 1960, DFH-1 began its mission. The Chinese Academy of Sciences set up the First Satellite Control Center and the People's Liberation Army General Staff Department established and operated the Second Satellite Control Center. Until April 1961, the United States Air Force had control over U.S. satellites. In 1962, CNSA gained control over all satellites. By the end of 1964, over 30% of the world's population were able to receive television signals from a satellite. In the 1970s, China became heavily involved in lunar exploration. In 1972, the Chang'e program was started. This program aimed to build a manned vehicle that could travel to the moon. In 1973, the country sent their first manned spacecraft, Shenzhou I, into orbit. By the early 1990s, the United States and Soviet Union had lost their monopoly over manmade objects in outer space. Russia attempted unsuccessfully to launch a satellite containing a nuclear warhead.

6.JAXA 

1. Japan Aerospace Exploration Agency (JAXA)

 2. JAXA is the Japanese space agency. It was founded in 1993 from the merger of three government agencies. They are responsible for sending people into space, mapping Earth's surface, monitoring natural disasters, and managing the International Space Station.top space agency 

 7.SSI - Space Studies Institute in California

Space Studies Institute in California is a non profit organisation founded in 1977. It has some very important research projects  like research on non-terrestrial materials .