Missile-tracking satellites are part of the plan to foil Russia’s hypersonic weapons
by Sandra Erwin — May 20, 2018
WASHINGTON — The Pentagon is looking at the possibility of deploying sensors in space to fill blind spots in the nation’s antimissile defense system.
This not a new idea. Six previous administrations have weighed concepts for space-based sensors but none materialized — the exception being two experimental satellites launched during the George W. Bush presidency that are still in orbit.
http://spacenews.com/missile-tracking-satellites-are-part-of-the-plan-to-foil-russias-hypersonic-weapons/Corrected title.