Swarming Proxima Centauri: Coherent Picospacecraft Swarms Over Interstellar Distances
Tiny gram-scale interstellar probes pushed by laser light are likely to be the only technology capable of reaching another star this century.
Proxima Centauri Thomas Eubanks Thomas Eubanks Space Initiatives Inc Swarming Proxima Centauri Thomas Eubanks Space Initiatives
Source: astrobiology.com