"Consider it comparable to a [Tomahawk Missile] striking US forces and allies anywhere on Earth at least once an hour with absolute impunity," the report reads.

A gigantic "blazar" may have fired a beam of light-speed particles at our planet, creating a 2023 "ghost particle" detection.

Between radiation and weightlessness, there's no telling how spacebound human development might go.

AI-only search is a slow-motion catastrophe. Here's how to make sure that the death of the traditional search engine remains greatly exaggerated.

A routine spacewalk provided some spectacular views and intriguing astro-babble.

Caltech has led JPL to some of the most ambitious and successful missions in NASA's history, but the agency could be about to change that relationship.

As long as there's been a space program, there have been people saying that there is no space program.

Science fiction saw this one coming from way out.

This year, DARPA should finally realize its long-time ambition to service and even cannibalize satellites in geosynchronous orbit.