May 2019
A matter of perspective
... of defunct objects now in various orbits around the Earth, from spent rocket stages and dead satellites to nuclear reactors. Some 600,000 objects ranging from 1 to 10 cm in diameter and 21,000 objects larger than 10 cm are orbiting Earth...
April 2020
Plasma Clipper - opening the age of sail, in space travel
... by igniting and expelling the reaction mass (propellant) they carry on board. Electric rockets use solar panels or a nuclear reactor to power the expulsion of the reaction mass but, essentially, they both work on the same principle - you...
31 January 2020
First images of new solar telescope produces most detailed images of the Sun
... solar storms." Illuminating what we know about our nearest star The sun is our nearest star – a gigantic nuclear reactor that burns about 5 million tons of hydrogen fuel every second. It has been doing so for about 5 billion...
