February 2020
Aeroshells – from LEO to Mars
...deployment mechanism. Debris mitigation LEO is one of the most commercially valuable regions of outer space (second only to geostationary orbit, GEO), and is situated between altitudes of about 150 km and 2000 km. The key letter in the acronym is the...
August 2020
Battle for the night sky - from telescopes to ad-breaks
...on larger, more powerful and more expensive satellites in geostationary orbit (GEO), but they faced the issue of longer...objects - including the Humanity Star and the presently hypothetical orbital advertising displays - purely in order to be seen from...
February 2021
Space archaeology - preserving our orbital heritage
... debris. For LEO, current guidance is that an asset should be safely de-orbited in a controlled fashion to burn up on re-entry. For satellites in geostationary orbit (GEO), the guidance is to place end-of-life hardware in a much higher ‘graveyard...
September 2023
A multifaceted approach to space sustainability
... other factors such as post-mission disposal. This has only been a consideration in geostationary orbit (GEO), where both the frequencies and the use of orbital positions are regulated by the ITU. But now, when radio regulators licence...
