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Earth-sized exoplanet ‘habitable zone’

nature.com

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Re: Earth-sized exoplanet ‘habitable zone’

#91

Earlier quoted context omitted.

> why do all the curvature calculations fail? Please, show a calculation that fails. Or two.

It fails in the sense that the rate of curvature expected on a sphere of that size cannot be seen or measured anywhere. Here's a curvature calculator from a non-geocentric site https://dizzib.github.io/earth/curve-calc/?d0=30&h0=10&unit=...

It was done in 240 B.C., by the Greek astronomer Eratosthenes:

https://www.youtube.com/watch?v=Mw30CgaXiQw

Re: Earth-sized exoplanet ‘habitable zone’

#92

Earlier quoted context omitted.

I just imagine 337453805774280 football fields end-to-end when I want to visualize a parsec

I imagine 18131846280409076 George Smoots standing on top one another.

They still painting those on the bridge? Smoots, I mean. Been outta the US for a while...

Re: Earth-sized exoplanet ‘habitable zone’

#93

I've been pondering this for a while: once we have artificial gravity in space (from rotation, for instance), would we ever want to shackle ourselves to the gravity of a foreign planet? It would be so much easier just to create the ideal environment in a large, rotating cylinder instead of having adjust a planet's environment to our needs. Take this new discovery for instance. Imagine that this planet is 400m years y…

I think the reason earth-like exoplanets generate so much interest is not because of the terraforming / colonization potential but rather because they are more likely places where we might find alien life.

We have to wonder if they're thinking the same about us.

"That 3rd planet looks easy to colonize. I wonder if there are any upright, talking primates there?"

Re: Earth-sized exoplanet ‘habitable zone’

#94

Earlier quoted context omitted.

It fails in the sense that the rate of curvature expected on a sphere of that size cannot be seen or measured anywhere. Here's a curvature calculator from a non-geocentric site https://dizzib.github.io/earth/curve-calc/?d0=30&h0=10&unit=...

It was done in 240 B.C., by the Greek astronomer Eratosthenes: https://www.youtube.com/watch?v=Mw30CgaXiQw

The old faithful Eratosthenes. The 2300 year old experiment used to refute no curvature being detected using modern optics in the year 2020.

That experiment is irrelevant because it assumes the metrics of the Heliocentric model. Meaning, it assumes the Sun to be much larger and further away. The Geocentric model proposes the Sun is vastly smaller and more localized. In that scenario the same phenomena would occur.

and I'll also add here, since I see it mentioned elsewhere in the thread. I'm not here to 'troll' anyone. I came here to glance through threads, noticed this one, looked at the picture, and had to say something. (((Space))) is not real my fellow human friends.

Re: Earth-sized exoplanet ‘habitable zone’

#95

Earlier quoted context omitted.

Typical NASA fanboy response. Ad-hominem, no substance. Refute the point. You can't. No curve = no sphere

You took maybe thirty second to write your rant and demand others spend hours or maybe even weeks coming up with an entire education program to fill in the gaps you have in your knowledge. This is a huge discrepancy in effort required. Perhaps if you volunteered to do push ups for the entire time posters went through the primary school education you missed, it would be equal effort and you'd get a better reception. A…

https://www.youtube.com/watch?v=GcEpmm1vLiU
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