The Carnival of Space 604 is up at Universe Today.
Universe Today – Progress for the Skylon. Europe agrees to continue working on the air-breathing SABRE engine
ESA, together with the UK Space Agency (UKSA) has given a positive evalution after reviewing the preliminary design of the demonstrator engine core of the Synergetic Air-Breathing Rocket Engine (SABRE). Reaction Engines will use to undertake ground-based testing at test facility at Westcott, Buckinghamshire, which is currently under construction. This will lead to major testing milestones being undertaken within the next 18 months.
SABRE is uniquely designed to scoop up atmospheric air during the initial part of its ascent to space at up to five times the speed of sound. At about 25 km it would then switch to pure rocket mode for its final climb to orbit.
In future SABRE could serve as the basis of a reusable launch vehicle that operates like an aircraft. Because it would carry much less bulky onboard oxygen supplies, such a vehicle could deliver the same payload to orbit of a half the vehicle mass of current launchers, as well as potentially offering a large reduction in cost and higher launch rate
Universe Today – SLS Rocket Promises To Do Better
Nextbigfuture – SpaceX Starship Rate of Progress Four Times Faster than the Reusable Falcon 9.
Universe Today -Which Habitable Zones are the Best to Actually Search for Life?