January 2021
Time to change our relationship with space?
... I moved office furniture! Perhaps I should have said Rocket Scientist! Meteosat Second Generation (MSG) satellites operate in geostationary orbit nearly 36,000 km over the west coast of Africa, from where they continuously scan the globe, showing...
February 2022
An interplanetary transportation system
...to move mass from Earth to a train station beyond geostationary orbit (GEO), known collectively as the Galactic Harbour; a ... The proposed Space Train would be in a continuous ‘Cycler Orbit’, as described by Aldrin, and would operate like a continuous ...
01 June 2021
Space junk collision highlights need for intervention
... services. It is estimated that there are around 34,000 trackable objects - larger than 5-10 cm in low Earth orbit (LEO) and 30 cm to 1 m in geostationary orbit (GEO) - as well as several thousands to millions of non-trackable debris particles...
March 2015
Sky links: from multi-satellite systems to nano-launchers
... that is still widely used. The effective use of the spectrum by large SC during television transmission from geostationary orbit is telling – the same frequency may be used by satellites in different positions and additionally radiate with different...
March 2016
Saving Earth from an Expanding Sun
...asteroid at the L1 or L2 or L5 Lagrangian points of Earth’s orbit and tug Earth away. Sound implausible? Maybe it’s time to take ... a very, very long tether from Earth to above geostationary orbit, secured to a counterweight, it could be possible to...
September 2016
Transforming US space policy
... demonstrated similar capabilities. And now, a Russian Luch satellite is manoeuvring from one satellite to another in geostationary orbit. Apart from potentially hostile activities, we face a threat from the growing population of space debris. This...
