It’s highly unlikely to be a gas planet at that size and distance from such a star. Something called hydrodynamic escape means that a gas planet needs to be quite a distance from its star, or very large, or both.
It could be a water planet - similar to Uranus or Neptune, which used to be called gas giants along with Jupiter and Saturn but are now more commonly called ice giants because their structure is quite different from the two largest planets in the solar system - but with liquid rather than ices because of its temperature. It would still have a rocky core (as Uranus and Neptune are both believed to) but it’s “ocean” would cover the entire surface. Or it could be a rocky planet like Mercury, Venus, Earth, and Mars. These are the two most likely possibilities from what I’ve been able to find out.
It’s highly unlikely to be a gas planet at that size and distance from such a star. Something called hydrodynamic escape means that a gas planet needs to be quite a distance from its star, or very large, or both.Thank you very much for that. I didn't know that. Are you a science writer?It could be a water planet - similar to Uranus or Neptune, which used to be called gas giants along with Jupiter and Saturn but are now more commonly called ice giants because their structure is quite different from the two largest planets in the solar system - but with liquid rather than ices because of its temperature. It would still have a rocky core (as Uranus and Neptune are both believed to) but it’s “ocean” would cover the entire surface. Or it could be a rocky planet like Mercury, Venus, Earth, and Mars. These are the two most likely possibilities from what I’ve been able to find out.
Thanks naturalman1975.
The weight of an astronaut on the lunar surface is about one sixth that of his Earth weight — despite the fact that the Moon is someone less than one-fourth the diameter of the Earth, and about one-one-hundredth of the Earth’s mass. Distance is more significant than mass when calc’ing stuff like this.
nice relevant graphic (not about weight):
http://btc.montana.edu/ceres/html/Weight/images/solarsystems9.gif
