NASAAstrophysicsSep 25, 20261 min
Approaching the Photon Sphere
Astroboat summary
As before, from this orientation, the black hole’s enormous gravity bends light to make two discernible images of the constellation Orion. You now descend to the photon sphere.
Why it matters
Astrophysics updates show how observations refine our picture of stars, galaxies, and the wider universe.