February 2017
Protecting our space interests
...’ in outer space has not taken place there is no clear definition of what is a weapon in outer space. Objects orbiting in LEO travel at 7-8 km/second and two such objects would present a very high relative velocity, in the order of 10-16 km/s, which...
July 2021
Collaboration and competition in lunar exploration
... alongside other commercial partnerships, NASA is well within vision to eventually entrust the commercial industry with all LEO operations. This shift to purchasing services from the private sector is allowing NASA to focus on areas where commercial...
April 2019
The changing economics of space
...be increased pressure on space nations to implement remedial action This has been overcome by launching smaller spacecraft into LEO at around 2,000 km altitude, or medium Earth orbit (MEO) at about 20,000 km altitude, both of which remove much of the...
February 2021
Space archaeology - preserving our orbital heritage
... The threat posed by debris within the commercially and scientifically valuable LEO and MEO is significant. If an object is large enough and.... Hubble, on the other hand, in a 545 km LEO, is accessible for servicing, repair and upgrade. A number ...
May 2024
Could ICAO be a NewSpace regulator?
...that it is not compulsory for countries to register satellites on launching. The goal of the UK Space Agency’s Clearing of the LEO Environment with Active Removal (CLEAR) Mission is to remove at least two UK-registered derelict objects from low Earth...
September 2024
Hypersonics and the route to orbit
...an altitude of 100 km at speeds in excess of Mach 5 and, from this altitude, to deploy a transfer vehicle designed to carry payloads to LEO. “HELLO-2 takes this a step further”, said Dass, “with the capability to deliver payloads to the lunar surface...
