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Alright, so the primary inspiration for this is 55 Cancri e, the speculated carbon "diamond world" and to a degree, Nkllon, a planet in Star Wars that is essentially what Cancri is, but "confirmed" to be a crystal mineral-rich planet in-world. I gave Nkllon as an example because it bears many similarities with Cancri as both are uninhabitable carbon-based planets extremely close to their parent star, making it very, very inaccessible. To reach Nkllon, the use of shield ships were employed, which were umbrella-like vessels that could resist the extreme rays and heat.

Now, I don't want to rip off Star Wars (even though the planet bears many is "essentially" Cancri e. So to mediate this, I was thinking about making the star a white dwarf rather than basing it off the star similar to our own. White dwarfs are formed by stars less than a quarter mass of our sun, so they immediately shrink without undergoing the process of becoming red giants, expanding and consuming the planet (since they're at such a close range) in the process before finally becoming a dwarves. The problem with this is that I don't know if a star the quarter mass of ours is even capable of providing the correct conditions to go about producing such rare materials in its system.

If that's the case, and a white dwarf is truly incapable of allowing such, could any other astronomical body while in conjunction with the white dwarf allow this planet to form?

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  • $\begingroup$ en.m.wikipedia.org/wiki/PSR_B1257%2B12 This is a solution to your planet formation issue. Just make the colliding White Dwarfs carbon rich and there you go. I even heard that these might be carbon planets. $\endgroup$ – TheDyingOfLight Apr 20 at 13:42
  • $\begingroup$ Additionally the Rouche Limit and tidal heating are a concern. $\endgroup$ – TheDyingOfLight Apr 20 at 13:44
  • $\begingroup$ I'm not sure you've got your stellar classifications quite right... a star with .25 solar masses is a red dwarf, which is theorised to evolve into a blue dwarf after a trillion years or more (eg, longer than the age of the universe). White dwarfs are formed by any star capable of fusing hydrogen that started out under 8-10 solar masses. Hard to write a good answer without more information on what you mean! $\endgroup$ – Starfish Prime Apr 22 at 19:32
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The star of the solar system plays no significant role in the composition of the planets. The composition is more about the place of the solar system in a galaxy. This is because of galaxies spinning. The heavier particles tend to be closer to the centre of galaxy.

The orbited object needs to be a lot heavier. The stars are much heavier than the planets, so the size probably does not matter much for the orbiting.

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