American spy agencies are divided on whether Moscow would go so far, but the concern is urgent enough that Secretary of State Antony J. Blinken has asked China and India to try to talk Russia down.
The Pentagon is in the early stages of a program to put constellations of smaller and cheaper satellites into orbit to counter space-based threats of the sort being developed by Russia and China.
Even the most powerful telescopes are in peril as orbits above Earth fill with thousands of new satellites. But scientists aren’t ready to give up the night sky.