10 Strangest planets

[Blue Ghost]

According to Thoughty Squared, these are the ten strangest planets;

https://www.youtube.com/watch?v=6KZ1kvIUFrU

 

[aramis]

According to Thoughty Squared, these are the ten strangest planets;

here's the list:

1. TrES 2b — albedo ≤0.01, 1,100°C
2. 55 Cancri e — diamond
3. Gliese 436b — 439°C, burning ice
4. HD 189773b — rains glass
5. WASP-12b — being eaten by its star
6. Gliese 581c — orbits a red dwarf, tidelocked
7. WASP-17b — 1.9M(j) Puffy.
8. HD 188653 Ab - trinary system
9. GJ 1214b - water world
10. Kepler 438b - most similar to earth yet found

 

[Blue Ghost]

There's a few others that didn't make the list. I think one is a gas giant that orbits its sun every few days. And allegedly water worlds may be somewhat common. Cool stuff if we ever make it to the stars.

 

[Blue Ghost]

Here's another vid about visiting Uranus (pronounced; Ura-nuss).

https://www.youtube.com/watch?v=0kPn8TRRL5Q

 

[Blue Ghost]

Giant Exo-planet defying planetary formation theory;

https://www.youtube.com/watch?v=-bGvEXPa5BM

 

[aramis]

Giant Exo-planet defying planetary formation theory;

https://www.youtube.com/watch?v=-bGvEXPa5BM

Looks to me like it started to form as a binary, but something disrupted its accretion (perhaps stellar ignition?) just below degeneracy starts fusion. (And wasn't 10 Jovian Masses the supposed upper limit for planets?

 

[Blue Ghost]

Looks to me like it started to form as a binary, but something disrupted its accretion (perhaps stellar ignition?) just below degeneracy starts fusion. (And wasn't 10 Jovian Masses the supposed upper limit for planets?

I have no idea, but apparently this guy bucked the trend.

 

[whulorigan]

(And wasn't 10 Jovian Masses the supposed upper limit for planets?

I believe 13 Jovian Masses is the upper-limit for Jovian Worlds vs the smallest Brown Dwarfs. But there seem to be some verified exceptions to this calculated value, so there is still uncertainty.

 

[G. Kashkanun Anderson]

I believe 13 Jovian Masses is the upper-limit for Jovian Worlds vs the smallest Brown Dwarfs. But there seem to be some verified exceptions to this calculated value, so there is still uncertainty.

Yes, the upper limit is generally accepted to be around 13 Jupiter Masses for a substellar body in a star system, although that's not an ironclad definition. Generally speaking, though, if it orbits a star and it's too small to fuse deuterium, it's a planet.

If it's off wandering the galaxy on its own, however, then it's not a planet, even if it's too small to keep the pilot light on. The most accepted term for those objects right now is 'sub-brown dwarf' -- at least if it's non-terrestrial.