Questions tagged [trappist-1]

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Are the planets in the TRAPPIST-1 system so close that inhabitants on one planet could see surface details on the other planets?

In a discussion below the Space Exploration question Are there any to-scale diagrams of the TRAPPIST-1 system I was invited to ask a question like this, so I have. Question: Are the planets in the ...
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Are there any to-scale diagrams of the TRAPPIST-1 system?

Recommended to cross-post from SpaceEx: https://space.stackexchange.com/questions/38397/are-there-any-to-scale-diagrams-of-the-trappist-1-system I was recently told that the planets in TRAPPIST-1 are ...
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Are there any to-scale diagrams of the TRAPPIST-1 system [duplicate]

I was recently told that the planets in TRAPPIST-1 are close enough together that you can see them from each other, as visible, discernible planets "hanging in the sky". i.e. much like the moon. I'm ...
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Is it possible for any of the planets in the TRAPPIST-1 system to have moons?

All of the planets in the TRAPPIST-1 system are all orbiting very closely and are somewhat large. Would it be possible for at least one of the planets to have a stable moon in orbit around it? Or ...
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TRAPPIST 1 and planet statistics?

From what I understand, the TRAPPIST 1 system was discovered using the transiting method looking at 20 ultra-cool small stars. I'm not sure how many have been observed since this study. What I wonder ...
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Is there a timeline for the naming of the TRAPPIST-1 worlds?

For the moment, the TRAPPIST-1 worlds are just known by their official designations, like "TRAPPIST-1a" etc. NASA made a casual tweet asking people what they would name the worlds, and there has been ...
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What would the tides on the Trappist-1 planets be like? [duplicate]

In the recent press conference about the planets orbiting around Trappist-1, one of the astronomers mentioned that the planets are close enough to each other that the tidal forces between planets are ...
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What would the view be list from TRAPPIST-1g, looking back towards TRAPPIST-1? [duplicate]

There's a lot of interest with the recent discovery of seven earth sized planets around TRAPPIST-1. I saw this poster, and the NASA video says that in the system you could see a lot of other planets ...
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How many things are wrong in this “artist view” of the TRAPPIST-1 system?

There is a this poster on the NASA site ( that irks me. Of course its an artist's fantasy, but since it is on a NASA site, I see people considering it as scientifically accurate. So, beyond the two ...
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Trappist-1 planet albedo

Is the albedo of any of the Trappist-1 planets know? Is it high enough so if you are on the surface of one of the planets, you can see the others? I looked up the distances from the star and size of ...
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1answer
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Is it realistic to build a telescope powerful enough to take a photo of TRAPPIST-1's planets?

Assuming modern and near future technology, could we build a telescope powerful enough to actually see TRAPPIST-1's planets?
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How long have the TRAPPIST-1 planets been in a habitable zone?

The planets orbiting TRAPPIST-1 are in orbits around their star much closer than Earth orbits Sol. However, since TRAPPIST-1 is a cool brown dwarf, some of the planets are in an "inhabitable zone", ...
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1answer
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How do we know the order of the new Trappist-1 planets?

Using transit photometry astronomers were able to discover Trappist b through h. Based on this question we learn that the naming of planets is based on their distance from their star (b being the ...
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Are there any planned future observations of TRAPPIST-1 and its planets?

The recent discovery of new planets around the star TRAPPIST-1 happened by observations from 7 ground-based telescopes, as well as the Spitzer Space Telescope. The team of astronomers responsible has ...
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How was Trappist-1 discovered?

I was going through all the questions in this community related to TRAPPIST-1 in order to know how planets TRAPPIST-1b to TRAPPIST-1h were discovered, but there aren't any. How were they discovered?
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Are the Trappist-1 planets close enough to be tidally heated?

According to the NASA press release, the Trappist planets are close enough (only a few million kilometers) that "the tidal forces between the planets are not negligible". The speaker says that this ...
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Are the Trappist-1 planets in stable orbits?

The Trappist-1 planets all orbit very close to each other. During NASA's press release, they mentioned that these planets are close enough to disturb each others orbits. Is this system stable over a ...
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How could we search for life in TRAPPIST-1 [duplicate]

It is possible to search for life from here, how? What methods could be used? It is possible to look for organic matter? Could we know if there is life according to the components of the planets ...
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Is there a gas giant orbiting TRAPPIST-1?

I would like to know if besides these planets, astronomers have discovered a gas planet like Jupiter in this system and if on these planets could exist life without a comet protector like Jupiter does ...
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Where did TRAPPIST-1a go?

According to the NASA announcement and the Wikipedia article on TRAPPIST-1, the planets around the TRAPPIST-1 star are named TRAPPIST-1 b through h. What happened to "TRAPPIST-1 a"?
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So, what exactly is an 'ultra-cool' dwarf star?

The TRAPPIST-1 system is around an ultra-cool dwarf star. I went looking for more information on that kind of star, and found very little. The Wikipedia article on it lengthened from a minimal stub to ...