The 17th Carnival of Space is now available, hosted by The Planetary Society’s Emily Lakdawalla. Astronomy Down Under offers some useful advice on choosing binoculars for celestial observing, while Brian Wang’s scenario for space technology in 2057 looks at what’s coming through the lenses of nanotechnology, advanced fission and fusion. Will carbon nanotubes lead to high-performance solar sails? Plenty to speculate about in this one, and an interesting set of links all around.