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alfa015
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BREAKING: New potentially habitable exoplanet found around Teegarden's star

19 Jun 2019 05:58

Astronomers have discovered a potentially habitable exoplanet around Teegarden's Star.

Teegarden is an old red dwarf star 12 light-years away in the Aries constellation.
 
The exoplanet found, called Teegarden b, has a minimum mass almost identical to Earth.
 
It orbits within the star's habitable zone.
 
And it has a 60% chance of having a temperate surface environment.
 
Surface temperature should be closer to 28°C assuming a similar terrestrial atmosphere.
 
Teegarden b is the exoplanet with the highest Earth Similarity Index discovered so far: 95%.
 
This means that it has the closest mass and insolation to terrestrial values.
 
Source: https://www.youtube.com/watch?v=eNGXerXGnjo
 
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Watsisname
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BREAKING: New potentially habitable exoplanet found around Teegarden's star

20 Jun 2019 00:12

alfa015 wrote:
Source of the post The exoplanet found, called Teegarden b, has a minimum mass almost identical to Earth.

I hate to dim the excitement, but I think that this part is important to emphasize.  When detecting an exoplanet by radial velocity measurements, the strength of the signal (how much it tugs its host star along our line of sight) depends on the inclination of the orbit, which is unknown (unless the planet also transits).  So the mass is reported as a minimum possible value.  

If the true orbit is edge on, then the reported mass is the true mass.  But if it's closer to face on, then the true mass can be several times larger, because we only see a small portion of the star's induced wobble. It's statistically inevitable that some "potentially habitable planets" reported by radial velocity measurements are not planets at all, but brown dwarfs.

I think the excited announcements of potentially habitable exoplanets should be more limited to planets found by combination of both radial velocity and transit method, since then we get not only the true mass, but also the planets radius, and thus density and a good idea of its bulk composition. 

The other big unknown is its atmosphere.  This world could be much more like Venus than Earth, baked under a tremendous greenhouse atmosphere.  Hopefully with next generation telescopes we can get much better data on atmospheric compositions, and look for evidence that they are not only potentially habitable, but actually inhabited. :)
 
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JackDole
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BREAKING: New potentially habitable exoplanet found around Teegarden's star

20 Jun 2019 00:37

Addons for the newly discovered planets (there are two planets!): viewtopic.php?f=3&t=301&start=30#p30056 and viewtopic.php?f=3&t=301&start=30#p30064
JackDole's Universe: http://forum.spaceengine.org/viewtopic.php?f=3&t=71
JackDole's Archive: http://forum.spaceengine.org/viewtopic.php?f=3&t=419
JackDole: Mega structures ... http://old.spaceengine.org/forum/17-3252-1 (Old forum)
 
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Gnargenox
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BREAKING: New potentially habitable exoplanet found around Teegarden's star

20 Jun 2019 05:10

What I thought was pretty cool was any Observer from Teearden could possibly detect Earth with the transit method, both Stars will be in perfect position in 25 years.
CPU: AMD FX-8350 8 core processor 4GHz / GPU: GeForce GT 730 @ 1920x1080, 60Hz with 1GB adapter RAM / RAM: Patriot Signature 4GB 1600MHz 240-Pin DDR3 (only 2GB work, don't buy it) / Motherboard: MSI 970 Gaming MS-7693
 
A-L-E-X
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BREAKING: New potentially habitable exoplanet found around Teegarden's star

26 Jun 2019 17:10

Will this planet be added to 0.990 automatically or should I add JD's version manually?
 
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JackDole
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BREAKING: New potentially habitable exoplanet found around Teegarden's star

26 Jun 2019 21:02

A-L-E-X wrote:
Source of the post Will this planet be added to 0.990 automatically or should I add JD's version manually?

In the latest version of SE 0.990, the planets of Teegarden's Star are already included.
You do not need my version anymore.
JackDole's Universe: http://forum.spaceengine.org/viewtopic.php?f=3&t=71
JackDole's Archive: http://forum.spaceengine.org/viewtopic.php?f=3&t=419
JackDole: Mega structures ... http://old.spaceengine.org/forum/17-3252-1 (Old forum)
 
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BREAKING: New potentially habitable exoplanet found around Teegarden's star

27 Jun 2019 06:19

SpaceEngine does not add new exoplanets automatically. I do it myself and release in a next planned update.
 
A-L-E-X
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BREAKING: New potentially habitable exoplanet found around Teegarden's star

29 Jun 2019 20:49

JackDole wrote:
A-L-E-X wrote:
Source of the post Will this planet be added to 0.990 automatically or should I add JD's version manually?

In the latest version of SE 0.990, the planets of Teegarden's Star are already included.
You do not need my version anymore.

Oh sorry, I thought those were procedurals, I didn't know that star had so many planets!
 
A-L-E-X
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BREAKING: New potentially habitable exoplanet found around Teegarden's star

29 Jun 2019 20:55

SpaceEngineer wrote:
SpaceEngine does not add new exoplanets automatically. I do it myself and release in a next planned update.

Thanks I love the 1660 Beta!
It works well but there are a couple of things I dont understand

I have either found a bug or a side effect of the new version.  When you land on a planet or moon and there are objects in the sky, you can click on some of them to highlight them and view their names and go to them as with the previous version.  But on some you can't do that!  Why is that?  Some of the objects I cant select or go to by clicking on them are objects in the solar system of the object I am on and some are other stars- there doesn't seem to be any pattern to it.  I can select and go to objects just fine if I am in space, just not in many cases if I am on the surface of an object.
I am on 1660 Beta now and the graphics memory usage is much less so I am in Ultra mode now [img=24x24]http://forum.spaceengine.org/images/smilies/icon_e_smile.png[/img]
One thing with the new version, I see a saturation illumination slider and it is set to Auto, what does that do?  I tried unchecking Auto and changed the setting to 2, and it changes the colors of the atmosphere and when set all the way up it makes a planet and its atmosphere look red?  When set to Auto it shows a pattern of different colors for the atmosphere depending on whether the sun is in the field of view, so I kept it at that.
 
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JackDole
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BREAKING: New potentially habitable exoplanet found around Teegarden's star

29 Jun 2019 22:10

A-L-E-X wrote:
Source of the post oh sorry, I thought those were procedurals, I didn't know that star had so many planets!

There are only two planets. And with the latest version of course I meant version 35.1660. (I had this version already a bit earlier.)
(Of course, the many planets in the previous version were procedural.)
JackDole's Universe: http://forum.spaceengine.org/viewtopic.php?f=3&t=71
JackDole's Archive: http://forum.spaceengine.org/viewtopic.php?f=3&t=419
JackDole: Mega structures ... http://old.spaceengine.org/forum/17-3252-1 (Old forum)
 
A-L-E-X
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BREAKING: New potentially habitable exoplanet found around Teegarden's star

30 Jun 2019 00:10

I see that was cleaned up in the new version and that planets I had previously saved look different now (different colored skies and different terrain!)

Any idea why when you land on a planet that the objects in its sky are sometimes not selectable by clicking on them?  It happens with some objects and not others.

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