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Exoplanets news thread

Posted: 14 Mar 2017 07:20
by SpaceEngineer
TRAPPIST-1 discussion and addon for 0.98 is here.

Exoplanets news thread

Posted: 19 Jun 2017 09:43
by Spacer

Exoplanets news thread

Posted: 15 Dec 2017 07:31
by Wicker1M
An eighth planet has been discovered at the star Kepler-90. This makes the Kepler-90 star similar to our sun with the number of planets in the Kepler-90 system equal to the number of planets in our solar system. 
https://arxiv.org/abs/1712.05044

Of course, if you consider dwarf planets like Pluto to be actual planets, then our solar system has the most planets.

Exoplanets news thread

Posted: 17 Dec 2017 07:26
by Mr. Missed Her
Wicker1M wrote:
Source of the post Of course, if you consider dwarf planets like Pluto to be actual planets, then our solar system has the most planets.

(Known.)

Exoplanets news thread

Posted: 20 Dec 2017 01:24
by Watsisname
Yeah, since we cannot yet detect exoplanets smaller than the Moon, it makes little sense to compare the number of known planets + dwarf planets in the solar system to any other system.  If we could, our system's status of "having the most" would probably be lost very quickly.

Exoplanets news thread

Posted: 20 Dec 2017 06:55
by SpaceEngineer
We also can't detect planets which are very far from the star, like Uranus and Neptune. So systems like Kepler-90 may actually have more planets.
Compact systems with many planets packed inside Mercury orbit probably have no external planets (or have just few of them). We can roughly estimate "is the system map complete" by summing up the masses of all known planets and dividing them on mass of the host star. If it is greater than 0.002, this may indicate that star has no unknown gas giants at the least (but still may have smaller planets of course). This is the upper limit on the mass of the protoplanetary disk.

Exoplanets news thread

Posted: 26 Jan 2018 15:17
by A-L-E-X
Hope all of these have been added as add ons :) we also discovered the closest earthlike planet at 11 LY away

Exoplanets news thread

Posted: 28 Jan 2018 05:08
by SpaceEngineer
Each new version of SE have up-to-date exoplanets catalog.

Exoplanets news thread

Posted: 04 Feb 2018 14:32
by PlutonianEmpire
It seems we have found (more) extra-galactic worlds now. https://www.universetoday.com/138478/fi ... er-galaxy/

Time to fix that distance bug for hyper-faraway custom systems? :D :lol:

(Just joking, no worries. ;) )

Exoplanets news thread

Posted: 05 Feb 2018 00:22
by SpaceEngineer
PlutonianEmpire wrote:
Source of the post It seems we have found extra-galactic worlds now.

https://en.wikipedia.org/wiki/PA-99-N2

Exoplanets news thread

Posted: 05 Feb 2018 10:49
by PlutonianEmpire
Eek, thanks for the reminder!

Exoplanets news thread

Posted: 05 Feb 2018 12:01
by SpaceEngineer
TRAPPIST-1 update:
https://www.nasa.gov/feature/jpl/new-clues-to-trappist-1-planet-compositions-atmospheres

All planets are most likely SE terra class, with a densities range from 3.4 (like Moon) to 5.6 (like Earth). Smallest planets certainly have large amounts of volatiles, probably water or ice.

Image

Image

Edit: the plot from the article is more informative. It shows that only planet e resembles Earth and Venus by composition, others seems to have significant amounts of water, or abnormally small metallic core.

fig10.png

Exoplanets news thread

Posted: 05 Feb 2018 22:58
by AyaReiko
[quote="SpaceEngineer"][quote="PlutonianEmpire"][post]18441[/post] It seems we have found extra-galactic worlds now.[/quote]
[url=https://en.wikipedia.org/wiki/PA-99-N2]https://en.wikipedia.org/wiki/PA-99-N2[/url][/quote]
Multiply that by a couple thousand.
https://www.seeker.com/astronomy/thousa ... first-time

Exoplanets news thread

Posted: 05 Feb 2018 23:22
by DoctorOfSpace
So I take it this means the planets in SE will need to be updated. 

Exoplanets news thread

Posted: 02 Apr 2018 05:47
by sophiewilson0191
Real life Exoplanet. Is it safe?
(Habitable Exoplanet Discovered Close To Earth)
https://www.evolving-science.com/space/ ... arth-00495