The Photon Sphere

Highlights

• ›Where light orbits — defining the black-hole shadow

Classes, physics & objects

• Black Hole
• The Event Horizon
• The Schwarzschild Radius
• Event Horizon Telescope (EHT)
• M87*

Knowledge connections

• Associated withBlack Hole
• Associated withThe Event Horizon
• Associated withThe Schwarzschild Radius
• Associated withEvent Horizon Telescope (EHT)
• Associated withM87*

Sources

Facts on this topic will be cited from these primary and reference sources.

• NASANational Aeronautics and Space Administration

  Mission data, planetary science, space telescopes, and public-domain imagery.

  Most NASA-produced imagery is in the public domain; individual items are checked for usage terms before publication.