Talk:Proxima Centauri d

"twice the mass of Mars" is wrong

If Proxima D is a quarter the mass of Earth, then "twice the mass of Mars" is wrong, as Mars has 38% of Earth's mass. Thus the right sentence would be "... half the mass of Mars" 2A02:3032:2:6498:1:1:CF4:33D8 (talk) 23:30, 22 May 2023 (UTC)[reply]

Wrong. Mars has 10.7% of Earth's mass, as stated in its article. Do you have a reliable source stating that Mars has 38% of Earth's mass? SevenSpheres (talk) 23:50, 22 May 2023 (UTC)[reply]

OK, you're right.

The mass is only 10% of Earth's.

But it's misleading. Because then people think its (surface) gravity is also only 10%.

But its (surface) gravity is 38% of Earth's. Because it is smaller than Earth. And thus one stands closer to it's center.

If talking about mass, one should also mention (surface) gravity, because that's what people are usually googling for. They want to know how heavy is a human walking on such a planet.

Mass is misleading.

But besides that, you're right.

I'm Sorry 2A02:3032:2:6498:1:1:CF4:33D8 (talk) 02:22, 23 May 2023 (UTC)[reply]

Without a measured radius for Proxima d, any surface gravity could only be an estimate. SevenSpheres (talk) 03:09, 23 May 2023 (UTC)[reply]

Yes, you're right 2A02:3032:2:6498:1:1:CF4:33D8 (talk) 07:01, 23 May 2023 (UTC)[reply]

bjtyfjh 64.188.193.118 (talk) 03:54, 22 November 2023 (UTC)[reply]