How Many Satellites are there in Space?

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  • Registration Date : 2020-09-18
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How Many Satellites are there in Space?

 - The University of Science and Technology (UST), a national research institute-based university,

operating various online public lectures on satellites and other topics


 How many satellites are there in space? Can small satellites be used as well? How many satellites are needed for the global positioning system to cover the entire earth? If you are curious about the answers to these questions, you can find them through “STAR-MOOC”, the online platform for public lectures offered by UST’s program for supporting S&T-Centered Research Universities.  

 In order to fulfill its capacities as a national research institute and provide a space for increasing public understanding of science and technology, UST launched the STAR-MOOC platform in 2018. There are 10 open lectures on various topics provided through this online platform, including classes on: Smart City : the Platform of the 4th Industrial Revolution” on the relationship between operation management of smart homes or buildings and urban regeneration; and “Biomedical Engineering” introducing research trends and fundamental mechanisms in biomedical engineering area including core technologies used in medical settings. Since its launch, a total of 3,425 individuals have attended these online, open lectures provided by UST.

 On Friday September 18, UST launched the following three new classes for the second semester of the 2020 school year: “Introduction to Satellite Orbital Mechanics”, which covers basic information on the dynamics of satellites and the principles of determining their orbits, as well as discussions on the problem of space debris; “Liquid Flow Metrology solving for Water Shortage and Energy Crisis Problems”, which provides the necessary engineering knowledge to help solve water shortage issues due to climate change and resulting energy issues; and “Introduction to Korean Medicine for Researcher”, which builds capacities for scientifically discovering the value of traditional medicine through theories and experiences in traditional Korean medicine from a modern perspective. The curricula for these classes are designed and operated by experts in their respective fields who are not only doctoral-level researchers in national research institutes, but also current professors at UST.

 The online classes provided by UST are open to anyone after following a simple login process, and all classes can be accessed on both the PC and mobile devices. More information can be found on the UST STAR-MOOC website at Through its open lectures, UST plans to use both the research-based and field-related knowledge that it is compiled as a national research institute to improve the quality of and continue designing content suitable for future education.

 As an educational institute operated directly under the Ministry of Science and ICT, UST is the only national research institute-based university in Korea. It fosters professionals in the field of science and technology by granting educational functions to 32 national research institutes, including the Electronics and Telecommunications Research Institute (ETRI), Korea Research Institute of Bioscience and Biotechnology (KRIBB), and Korea Institute of Ocean Science and Technology (KIOST). UST currently offers degree programs in 46 different integrated and convergent fields, including aerospace studies, new energy studies, construction, astronomy, maritime studies. Through its advanced research equipment, UST provides students with field-based education.