Astronomy Picture of the Day · July 2, 2013

Circling a Black Hole at its Photon Sphere

The Astronomy Picture of the Day for July 2, 2013 is “Circling a Black Hole at its Photon Sphere,” a video. The video is copyrighted by its creator (Image Credit & Copyright: Robert Nemiroff ( MTU )). The original explanation runs about 269 words.

From the explanation

“What would it look like to go right up to a black hole? One particularly interesting place near a black hole is its photon sphere , where photons can orbit in circles, a sphere 50 percent further out than the event horizon .”

— APOD editors, July 2, 2013

Read the full explanation on science.nasa.gov

At a glance

Date: July 2, 2013
Type: Video
Credit: Credit: Image Credit & Copyright: Robert Nemiroff ( MTU )
Copyright: Copyrighted by the credited creator. Ask the copyright holder before reusing it.
Explanation length: About 269 words

All of July 2013 → · 2013 by month → · Full archive since 1995 →

Topics in this entry

Black holes

Topics are matched from words in the title and explanation.

On this day: July 2 in other years

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Source

Astronomy Picture of the Day, July 2, 2013 — science.nasa.gov/image-article/apod-2013-july-2-circling-a-black-hole-at-its-photon-sphere

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.