2022年2月18日 · Low-earth orbit (LEO) satellites are said to be the technology to revolutionize the internet. With more than a third of the world still offline, this satellite constellation can help connect the unconnected and bridge the digital divide that’s leaving remote and rural communities behind.

2022年1月11日 · The traditional Geostationary Orbit (GEO) commercial satellite market, which has dominated the communications sector for decades, is now losing commercial value because of competition from new players seeking to provide services from LEO or MEO. 1 More recently, in the last decade, the financing of new applications for space-based initiatives has grown fast: …

2021年5月5日 · Space junk is rapidly proliferating in low-Earth orbit, or LEO, which generates more debris and imperils space exploration. International space agencies are creating guidelines to mitigate space junk, while aerospace corporations are designing spacecraft to proactively minimize and even pick up debris.

2023年6月13日 · “Astra takes great pride in continuing to work with the larger aerospace industry to reduce space debris. Maintaining space sustainability, particularly in low-earth orbit, is vital not only for our mission to improve life on earth from space, but for lowering the barriers of entry to space and creating a healthier and more connected planet.”

2021年5月20日 · Since the Soviet Union put Sputnik 1, the first satellite, into space in 1957, the area of space known as low-earth orbit has become ever-more crowded. With space traffic increasing, the number of in-space collisions are “expected to rise ," according to the United Nations Office for Outer Space Affairs (UNOOSA).

2023年9月4日 · These recent launches are adding to the congestion in low-Earth orbit. The Union of Concerned Scientists (UCS) keeps a database of all satellites deployed. Its latest update shows there are 6,718 operational satellites in orbit around the Earth.

2025年2月13日 · Modern servicing vehicles combine sophisticated robotics with AI-driven autonomy, capable of performing complex repairs and modifications in orbit. New capabilities include in-orbit assembly of large structures, component-level repairs using 3D printing technology, and the ability to upgrade satellite hardware and software systems.

2024年5月16日 · A first-generation Earth observation satellite touched back down in March, after revealing the accelerated changes of polar ice sheets due to global warming in the 1990s. From equipment mounted on the ISS to miniature satellites, we look at the current – and future – generation of technology used to monitor our planet’s health from space.

2017年10月10日 · Stellenbosch University electronic engineering students built South Africa’s first satellite, Sunsat, launched in 1999. Their spinoff company, Sunspace, built the country’s second satellite, Sumbandila. Students from the Cape Peninsula University of Technology were responsible for developing the third satellite, the cubesat Tshepiso. South ...

2019年3月4日 · This has helped the spread of satellite technology to less wealthy countries without space programmes of their own. The UCS Satellite Database, compiled by the Union of Concerned Scientists, a nonprofit science advocacy group, shows that the United States, as of November 2018, had 830 registered units in orbit. That number almost exceeds the ...