Scientists flew the XL-Calibur telescope on a high-altitude balloon to measure polarized X-rays from Cygnus X-1. These ...

Long before rockets and satellites reached space, the Crab Nebula stood out as a steady beacon of high-energy light. At its ...

A high-altitude balloon telescope has revealed new patterns in X-rays emitted near the black hole Cygnus X-1. These signals give scientists a clearer picture of how gas and radiation behave in the ...

An international collaboration of physicists including researchers at Washington University in St. Louis has made measurements to better understand how matter falls into black holes and how enormous ...

On November 28, 1967, astronomers found the first pulsar. A pulsar is a super-dense star that rotates super fast. As the ...

CAPE CANAVERAL, Fla. — Scientists have detected what they believe to be lightning on Mars by eavesdropping on the whirling ...

Scientists have caught Mars's atmosphere crackling with static, uncovering evidence of miniature lightning in its dust storms.

NASA’s sleek and quiet supersonic jet — which is built to reach speeds of up to 925 mph without producing a loud sonic boom— soared across the California desert in its first test flight on Tuesday, ...

NASA has captured unsettling cosmic noises — from black hole vibrations to Martian winds and Saturn’s rings — despite space’s vacuum. These endangered predators have finally returned. Should ...

The "quiet" supersonic aircraft developed by NASA and Lockheed Martin has completed its first flight in California. Dubbed the X-59 Quiet SuperSonic Technology Aircraft, or Quesst, it is a sleek ...

NASA's Perseverance rover has recorded the first evidence of electrical activity on Mars that a scientist described as "mini ...