Strange sightings

Julian · 28 Sep 2019 23:40

A minineptune smaller than the Earth? Should we consider it a very small Neptune or a very cold Venus? Note how high the ESI is even though it bears very little resemblance to Earth.

29 Sep 2019 01:16

Julian wrote:
Source of the post Note how high the ESI is even though it bears very little resemblance to Earth.

The ESI value is calculated from radius, density, escape velocity and surface temperature.
These values are all relatively earth-like on the planet.
(The ESI value has nothing to do with whether a planet is habitable.)

Space Bepis · 25 Oct 2019 17:36

I just found something weird: RS 0-7-970917-2306-63-4-4095-384 B2, a planet with rings that cast a shadow sideways. Yes, sideways, as in at a 90° angle from the rings themselves

YouTube · 28 Oct 2019 03:48

Julian wrote:
A minineptune smaller than the Earth?

Omg so interesting, I'm curious to know if it's possible.
I suppose the classification is that due to the planet's composition.

28 Oct 2019 22:14

Julian,
That is more a vapor planet rather than a true gas planet. Think of it as an Ice planet or water world with a runaway greenhouse effect.

Edit: This is not to say true gas planets can't get very small under the right circumstances.

A-L-E-X · 29 Oct 2019 03:55

Salvo wrote:
Julian wrote:
A minineptune smaller than the Earth?

Omg so interesting, I'm curious to know if it's possible.
I suppose the classification is that due to the planet's composition.

and it would have a thinner atmosphere so easier to see nice colors in the sky