Radian One
Radian Aerospace is developing the Radian One spaceplane intended to carry people and "light cargo" to orbit, taking off and landing from runways. Credit: Radian Aerospace

WASHINGTON — A startup has raised a seed round of funding to pursue development of what’s long been considered the holy grail of space transportation: a single-stage-to-orbit reusable spaceplane.

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Jeff Foust writes about space policy, commercial space, and related topics for SpaceNews. He earned a Ph.D. in planetary sciences from the Massachusetts Institute of Technology and a bachelor’s degree with honors in geophysics and planetary science...