this post was submitted on 10 Oct 2023
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Falling through the Solar System at an astonishing 635,266 kilometers (394,736 miles) per hour, NASA's Parker Solar Probe has just smashed the record for fastest object ever to be created by human hands.

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[–] Pons_Aelius@kbin.social 22 points 1 year ago* (last edited 1 year ago) (6 children)

One the most counter-intuitive facts about the solar system is that the hardest place to visit is the Sun. It takes less energy (delta-V) to send a probe on its way to Alpha-Centuri than to the sun.

[–] MD756@lemmy.world 2 points 1 year ago* (last edited 1 year ago) (4 children)

Can you expand? Is it just because close proximity to the sun is so hostile? Takes more fuel to counter the sun’s “headwind?”

[–] meyotch 10 points 1 year ago (2 children)

I don’t want to talk over the original comment, but I believe they were speaking specifically of delta-v, which is ‘change in velocity’. So you have to burn more fuel to visit the sun than you need to go the other way and leave the solar system.

[–] thepianistfroggollum@lemmynsfw.com 8 points 1 year ago (1 children)

You are correct, that is what they meant

[–] BilboBargains@lemmy.world 7 points 1 year ago

People are really polite here

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