Planet Nine from Outer Space!

[KitemanSA]

Obviously, it is the world of the jötnar. The Jötnar are the race that live on Jötunheimr, one of the nine worlds of Norse cosmology.

So again, obviously the ninth planet, an ice giant is the home of the ice giants and is named Jötunheimr.

[choff]

If they can invade Earth or have their planet collide with our own, it works for me.

[JoeP]

I like Kite's suggestion on the name. Fitting.

Although the ice giants on a high gravity world might evolve as mouse sized and mass when compared to us in order to deal with the weight

[paperburn1]

Maybe they are just giants in width...

[krenshala]

I like Kite's suggestion on the name. Fitting.

Although the ice giants on a high gravity world might evolve as mouse sized and mass when compared to us in order to deal with the weight

This reminds me of a book I read quite a while ago. I don't remember the author, but the title was Dragon's Egg - a book about humans investigating a passing neutron star, and how the life on that star behaved in response. Just looked it up, figures its a Robert Forward novel. https://en.wikipedia.org/wiki/Dragon's_Egg

The natives of the neutron star are sesame seed sized, about half a milimeter tall and about five milimeters across, living in a gravity field of about 67 Gg (yeah, giga-gees).

[KitemanSA]

I like Kite's suggestion on the name. Fitting.

Muny Taks, JoeP!

[hanelyp]

Would the planet have high surface gravity? That depends on both total mass and density. Uranus has a surface gravity of only 8.69 m/s²

[choff]

For rocket scientists and Pink Floyd fans.

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