September 2024
Hypersonics and the route to orbit
...here is using hypersonic technology to realise a two-stage to orbit spaceplane. Artist’s impression of H1X. The DASS GNX is ...iteration, HELLO-2, will carry 5500 kg to LEO, 1730 kg to geostationary orbit (GEO) and 760 kg to the lunar surface, and will ...
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...
August 2017
On-orbit assembly will deliver major benefits in coming decade
... and provide launch savings of several hundred million dollars. Communications satellites On-orbit assembly can also provide payoff for telecommunications in geostationary orbit (GEO). Consider the data distribution sector where the satellite is used...
January 2019
Preparing for a robotic revolution in Earth orbit
...; it produces no greenhouse gases, radioactive waste, pollution, or scarring of the Earth for resources; and from geostationary orbit, it is most efficiently received at low latitudes, where much of the Earth’s population growth is occurring. Japan...
