European Reusable Launch Vehicles: DLR

German Space Agency proposed a path towards European Reusable Launch Vehicle – SpaceLiner. From small ReFEx, through Callisto, RLV-Demo and Semi RLV it will increasingly develop expertise in hypersonics and rapid re-usability towards making launchers operate almost like regular jetliners.

Wavelengths – seeing the unseen from space

Every substance interacts with light in a different way. Knowing these interactions allows us to figure out of what are composed the materials we are looking at. Thus, in a visible light spectrum chlorophyll in plants absorbs red and blue light while reflecting a wide...