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Questions regarding the Sun, or Sol in Latin, the star at the center of the solar system Earth is in.

5 votes
1 answer
547 views

How do solar flares and coronal mass ejections create proton storms?

Wikipedia has this to say about solar particle events: A solar particle event (SPE), or "proton storm," occurs when particles (mostly protons) emitted by the Sun become accelerated to very high …
kim holder's user avatar
  • 21.5k
4 votes
3 answers
2k views

What are the problems with using the sun for Oberth maneuvers?

Presumably, it has something to do with the sun being rather hot. All the same, are there any potential cases with current technology where swinging close by the sun would be worth the shielding for t …
kim holder's user avatar
  • 21.5k
9 votes
2 answers
1k views

How was this image of the sun taken and what does it show?

In the last few years amazing images of the sun have been around. They are from the Solar Dynamics Observatory's AIA instrument. The one below shows super-hot iron atoms. So, am I looking at field lin …
kim holder's user avatar
  • 21.5k