Astronomy Picture of the Day ·

Chandra Resolves the Hard X-Ray Background

The Astronomy Picture of the Day for January 14, 2000 is “Chandra Resolves the Hard X-Ray Background,” an image. It is credited to Credit: R. Mushotzky ( GSFC ) et al., Chandra , NASA. The original explanation runs about 135 words.

Chandra Resolves the Hard X-Ray Background
Credit: R. Mushotzky ( GSFC ) et al., Chandra , NASA Shown from science.nasa.gov. Not hosted by OpenOrbit.

From the explanation

“It is everywhere but nobody knew why. In every direction at all times, the sky glows in X-rays .”

— APOD editors, January 14, 2000

Read the full explanation on science.nasa.gov

At a glance

Date
January 14, 2000
Type
Image
Credit
Credit: R. Mushotzky ( GSFC ) et al., Chandra , NASA
Copyright
No copyright notice on the entry. Check the credited institution’s own usage rules before reusing it.
Explanation length
About 135 words

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On this day: January 14 in other years

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Source

Copy taken Oct 28, 2026, 2:39 AM EDT. The image and explanation belong to their creators. OpenOrbit is not affiliated with or endorsed by NASA.