{"id":26195,"date":"2023-09-14T06:46:55","date_gmt":"2023-09-14T06:46:55","guid":{"rendered":"https:\/\/blubot.in\/pixxel\/from-sputnik-to-firefly-the-fascinating-world-of-satellites\/"},"modified":"2025-03-13T11:31:26","modified_gmt":"2025-03-13T11:31:26","slug":"from-sputnik-to-firefly-the-fascinating-world-of-satellites","status":"publish","type":"post","link":"https:\/\/blubot.in\/pixxel\/from-sputnik-to-firefly-the-fascinating-world-of-satellites\/","title":{"rendered":"From Sputnik to Firefly: The Fascinating World of Satellites"},"content":{"rendered":"

October 4, 1957 – <\/strong>\u201cT -10 minutes,\u201d blared the loudspeaker in an underground bunker in the Baikonur Cosmodrome<\/a>, Kazakhstan. Just 200 meters away, the Tulip launch pad hosted a colossal 29-meter R-7 rocket with a unique payload: a shiny, sphere, basketball-sized sphere, weighing 83.6 kg.<\/p>\n

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Sputnik satellite, shown resting on a three-legged pedestal in 1957 (Russian News Agency, via <\/em>New York Times<\/em><\/a>)<\/em><\/figcaption><\/figure>\n

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Sputnik-1<\/a>, the world\u2019s first artificial satellite, marked a monumental milestone, inaugurating the Space Age and triggering the Space Race. Sputnik\u2019s characteristic radio signals<\/a> were a symbol of Soviet technological prowess, revolutionizing the era of space exploration.<\/p>\n

From Sputnik to today\u2019s technological marvels, the satellite journey is captivating, evolving from its humble beginnings to redefining our understanding of our planet.<\/p>\n

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What is a satellite?<\/strong><\/h4>\n

A satellite <\/a>is something that orbits a planet or star, including natural satellites<\/strong> (like our Moon) and artificial satellites<\/strong>. <\/p>\n

Artificial satellites are man-made objects, typically built for Earth\u2019s orbit but can serve missions on other planets, such as the Mars Orbiter Mission (MOM)<\/a>. They\u2019re built, launched, and operated for objectives like imaging, communications, and scientific research. <\/p>\n

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Explained: A brief history of satellites<\/strong><\/h4>\n

How did the concept of satellites emerge? What experiments caused us to get to where we are today? <\/p>\n

1. Newton\u2019s pioneering thoughts<\/strong><\/p>\n

In \u201cDe Mundi Systemate (<\/em>A Treatise of the System of the World<\/em><\/a>),\u201d <\/em>Isaac Newton<\/a> laid the foundation for artificial satellites. His thought experiment described the idea of shooting a cannonball<\/a> from a great height, exploring the dynamics of motion and gravitational forces.<\/p>\n

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Page extract from Newton\u2019s \u2018A Treatise of the System of the World\u2019 which shows his cannonball experiment (Google Books, via <\/em>Wired<\/em><\/a>). <\/em>  <\/figcaption><\/figure>\n

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Newton theorised that launching a cannonball at various speeds would yield different outcomes: low speeds (between 0 and 7,000m\/s) would lead to it falling to Earth, moderate speeds (between 7,000 and 10,000 m\/s) would create an elliptical orbit around our planet, and speeds exceeding 10,000 m\/s (or Earth\u2019s escape velocity<\/a>) would allow escape from Earth\u2019s gravitational pull. This laid the foundation for artificial satellites.<\/p>\n

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Newton\u2019s cannonball thought experiment with an initial velocity under 7,300 m\/s (top) and between 7,300 and 10,000 m\/s (bottom) (Wikimedia Commons).<\/a><\/figcaption><\/figure>\n

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2. Tsilovsky\u2019s influence: the Father of Spaceflight <\/strong><\/h4>\n
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Konstantin Tsiolkovsky (<\/em>ESA<\/em><\/a>).<\/em><\/figcaption><\/figure>\n

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Konstantin Tsiolkovsky<\/a>, a Russian (and later Soviet) scientist, is celebrated as the \u201cFather of Spaceflight<\/strong>.\u201d His ideas set the stage for space exploration and modern rocket development. <\/p>\n

In 1903<\/a>, he outlined the principles of rocket propulsion and space travel. Tsiolkovsky\u2019s most notable contribution was the concept of multi-stage rockets for launching payloads into Earth\u2019s orbit. <\/p>\n

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3. Clarke\u2019s vision and the modern satellite era<\/strong><\/h4>\n

In the mid-20th century, science fiction writer Arthur C. Clarke<\/a> played a crucial role in revolutionising telecommunications. His 1945 piece, \u201cExtraterrestrial Relays,\u201d laid the groundwork for the modern satellite era.<\/p>\n

Clarke\u2019s theory proposed that a satellite orbiting at Earth\u2019s rotational speed would remain fixed relative to the planet\u2019s surface. Positioned about 35,786 kilometres above Earth, this seemingly stationary satellite would serve as a relay for telecommunication signals, revolutionising how we connect.
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\u200dWhat does a satellite consist of?<\/strong><\/h4>\n

A typical satellite consists of electrical, mechanical, and chemical components which perform specific functions within the satellite. These can be divided into satellite subsystems:<\/p>\n