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The Parker Solar Probe will make its closest approach yet to the Sun

(arstechnica.com)
164 points pseudolus | 1 comments | 20 Dec 24 11:23 UTC | HN request time: 0.245s | source
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amelius ◴[20 Dec 24 19:50 UTC] No.42474343[source]▶
Of course it is completely evaporated before hitting anything that remotely resembles a surface.
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detritus ◴[20 Dec 24 19:57 UTC] No.42474412[source]▶
Is there even a surface?
replies(2): >>42474449 #>>42474954 #
1. adolph ◴[20 Dec 24 20:59 UTC] No.42474954[source]▶
The photosphere is the visible surface of the Sun that we are most familiar with. Since the Sun is a ball of gas, this is not a solid surface but is actually a layer about 100 km thick (very, very, thin compared to the 700,000 km radius of the Sun).

https://solarscience.msfc.nasa.gov/surface.shtml