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Earth-sized exoplanet ‘habitable zone’

nature.com

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Re: Earth-sized exoplanet ‘habitable zone’

#31

Post by CWuestefeld »

Pfhreak wrote: post #5
baxtr wrote: post #3

Earlier quoted context omitted.

I imagine that there is a small area where life would be possible?

These types of planets are known as 'Eyeball planets'. [1] They are hypothesized to have a hot side and a cold side, and potentially a ring around the periphery that is 'just right' where liquid water could form and sustain life. Not sure if this particular planet would meet those criteria. [1] https://en.wikipedia.org/wiki/Eyeball_planet

The problem is that around the margins where it's "just right", you'll probably have mega-winds and stuff, too.

Re: Earth-sized exoplanet ‘habitable zone’

#33

Post by thekingofh »

dmurray wrote: post #15
jcims wrote: post #4

> Astronomers have discovered a world only a little bit bigger than Earth, whirling around a bright star about 31 parsecs from our planet. Parsec is one of those units that is difficult to remember if you just look at the conversion (1 parsec = 3.26 light years). If you remember how it's defined, however, it somehow becomes easier (for me anyway). One parsec is the distance at which one astronomical unit (AU, mean di…

I just remember that a parsec is the same as a light year. By astronomical standards of precision, that's about right.

Is that the same as discarding constants in big O notation?

Re: Earth-sized exoplanet ‘habitable zone’

#35

Post by DenisM »

baxtr wrote: post #3
CWuestefeld wrote: post #2

According to this [1] it's probably tidally locked, which means that despite being in the goldilocks zone, the environment is likely problematic for life. [1] https://www.sciencealert.com/nasa-found-a-tatooine-like-plan...

I imagine that there is a small area where life would be possible?

The snow storms are pretty bad I imagine.

Re: Earth-sized exoplanet ‘habitable zone’

#36

Post by StuffedParrot »

ppeetteerr wrote: post #16

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…

> 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.

Yea but people want to go outside.

Re: Earth-sized exoplanet ‘habitable zone’

#37

Post by [deleted] »

dmurray wrote: post #15
jcims wrote: post #4

> Astronomers have discovered a world only a little bit bigger than Earth, whirling around a bright star about 31 parsecs from our planet. Parsec is one of those units that is difficult to remember if you just look at the conversion (1 parsec = 3.26 light years). If you remember how it's defined, however, it somehow becomes easier (for me anyway). One parsec is the distance at which one astronomical unit (AU, mean di…

I just remember that a parsec is the same as a light year. By astronomical standards of precision, that's about right.

[deleted]

Re: Earth-sized exoplanet ‘habitable zone’

#38

Post by vorticalbox »

StuffedParrot wrote: post #36
ppeetteerr wrote: post #16

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…

> 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. Yea but people want to go outside.

Artificial outside? If the ship, for lack of a better term, were big enough its conceivable that you could have a larger open area with grass and trees which would feel much like a park.

Could even paint the roof blue.

Re: Earth-sized exoplanet ‘habitable zone’

#40

Post by [deleted] »

dmurray wrote: post #15
jcims wrote: post #4

> Astronomers have discovered a world only a little bit bigger than Earth, whirling around a bright star about 31 parsecs from our planet. Parsec is one of those units that is difficult to remember if you just look at the conversion (1 parsec = 3.26 light years). If you remember how it's defined, however, it somehow becomes easier (for me anyway). One parsec is the distance at which one astronomical unit (AU, mean di…

I just remember that a parsec is the same as a light year. By astronomical standards of precision, that's about right.

[deleted]
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