# Parker Solar probe's heat survival - Heat vs Temperature

This is not about about heat shields, materials, coolant, etc.

I am not quite not getting the science that explains the Heat Vs Temperature, which is how the Parker probe is going to survive the corona of Sun.

https://www.nasa.gov/feature/goddard/2018/traveling-to-the-sun-why-won-t-parker-solar-probe-melt

I can understand the oven vs boiling water comparison in the above link, but then does that mean there will not be any high temperature contact at all during the corona fly-through or those few high temperature particles will not damage the probe? Or even if it is very few particles that contact the probe, won't they still damage the probe because of the high temperature at 2 Million degrees?

So what it really means when we say the temperature of corona is at 2 million degrees Fahrenheit - say, if we place a thermometer in the corona (that can measure extreme levels), will that read 2 million degrees or 2,500 degrees?

Can someone help me understand in layman terms? or am I missing something very basic here?

• You essentially have two very good questions here - what is the difference between heat and temperature? which would be better suited for Physics SE and what does it mean to measure the temperature of space? which may be better for Astronomy SE. Check to see if there isn't already an answer for you there!
– Jack
Aug 13, 2018 at 10:16
• I won't VTC because someone may write a good answer in the context of Parker Solar Probe. While you wait, think about this: If I flick a drop of boiling 100°C water on you, it will sting a bit at worst. However, if you jump into a boiling bathtub at the same temperature...
– Jack
Aug 13, 2018 at 10:18
• @Jack Thanks, I just wasn't sure where this question should go and since I had this question based on the Parker Probe NASA article, posted it here. Aug 14, 2018 at 6:59