November 2017
Reusable air-launch and the space access paradigm
... US$1million, as shown in Figure 6. It also shows that a small subsonic air-launched RLV with a performance of only 500 kg to LEO – equivalent to a fully reusable ‘Pegasus’ – could support this market by carrying only two passengers per flight, but...
March 2019
Urgent action needed to avert space debris threat
... and it’s getting worse. With multiple low Earth orbit (LEO) satellite constellation launches planned in the coming months and years...rendered impossible. This could be the case not only for LEO, but also for medium Earth orbit (MEO) and geostationary ...
August 2020
Battle for the night sky - from telescopes to ad-breaks
...saw pollution.” Then, in early 2019, the Russian company Orbital Display proposed a constellation of a hundred CubeSats in a 400 km LEO that would unfurl 10 m diameter Mylar sails to create a pixilated matrix for advertising, using the sun as a light...
September 2017
Measuring space debris risk
...have a size greater than 10 cm diameter in low Earth orbit (LEO) and greater than 1 m in geosynchronous orbit (GEO). This means... mission capability. The spacecraft involved were nearly all in LEO (usually in sun-synchronous or near polar orbits) and ...
September 2020
Tackling space debris - a global priority
... TNT. As a result, both spacecraft were destroyed and about 2000 additional pieces of trackable debris were added to LEO. Most recently, on 27 March 2019, India conducted an ASAT test (known as Mission Shakti) on a 740 kg Earth observation satellite...
January 2021
Asgardia’s project for a new module to expand Space Station
...future of research in - and exploitation of - low Earth orbit (LEO) beyond the lifetime of the ISS. At present, it seems likely...The essence of the Asgardia initiative is the construction of a LEO economy The aim of the consortium is to secure funding ...
