X-rays are radiated by matter hotter than one million Kelvin, and high-resolution X-ray spectroscopy can tell us about the composition of the matter and how fast and in what direction it is moving.

Astronomers from Germany and Turkey have analyzed available data from various space telescopes to investigate an ...

The Milky Way’s farthest spiral arms have long been sketched more from motion than measurement. Now three violent explosions ...

Silicon-On-Insulator (SOI) pixel sensors represent a pivotal technological advance in X‐ray astronomy, integrating a high-resistivity sensor layer with advanced CMOS circuitry on a single chip. This ...

X-ray astronomy has transformed our understanding of the Milky Way by revealing the high-energy processes that are invisible at optical wavelengths. Observations from orbiting telescopes capture ...

Astronomers have taken the closest look yet at X-4, one of the ultraluminous X-ray sources in the Whale galaxy, and found ...

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This image shows a collection of 25 new space images celebrating the Chandra X-ray Observatory's 25th anniversary. Starting from the upper left, and going across each row, the objects imaged are: Crab ...

NASA has been using X-rays to crack the invisible secrets of the universe for decades. The Einstein Observatory pioneered X-ray astronomy in the late '70s, but the crown jewel of this science field is ...

The Chandra X-ray Observatory, one of four great space telescopes NASA launched in the 1990s, revolutionized our understanding of the universe from the moment it first began recording X-rays ‒ the ...

Astronomers have found a vast loop-like structure, 20 light years across, adjacent to the most massive star-forming region known in our galaxy. The loop, which was observed in X-ray wavelengths, is 15 ...