VISUAL ARCHIVE / IMAGE STORY
A Probe Crosses the Corona
Parker Solar Probe sampled conditions in the Sun’s outer atmosphere.

An artist’s impression of Parker Solar Probe above the solar limb, with its heat shield facing the Sun. The mission’s first confirmed passage into the corona occurred in April 2021. AI-generated illustration.
THE OBSERVATION
What we can actually see.
NASA identifies an April 2021 passage through the Alfvén critical surface from magnetic and particle measurements. The probe measures the surrounding solar environment, not the route of a photon from the core.
THE ILLUSTRATION
What the artwork imagines.
The camera placement and nearby surface detail are artistic. Crossing the corona is defined by measured plasma conditions, not a visible line the spacecraft pierced.
FROM THE ILLUSTRATED ARTICLE
The story that inspired it.
The article separates the slow transport of energy through the Sun from the later outward flight of light and plasma. Parker Solar Probe sampled conditions in the Sun’s outer atmosphere.
Read The Sun Is a Prison for Its Own LightCHECK THE RECORD
The image interprets the research below. Follow the original work for the measurements and limits behind the scene.
NASA: Parker enters the solar atmosphereOTHER IMAGE STORIES
The Slow Escape of Solar Energy
Earth Inside the Sun’s Reach
The Mark Shared by Titan and Pluto