Readers ponder mini-spacecraft and Canaanites’ genomes
Your letters and comments on the September 2, 2017 issue of Science News
Spritely voyage
Engineers recently launched prototypes of miniature spacecraft. The prototypes, each a single circuit board, include solar panels, radios, thermometers and gyroscopes, Maria Temming reported in “These chip-sized spacecraft are the smallest space probes yet” (SN: 9/2/17, p.