14

None of the TRAPPIST-1 planets are "considered habitable"; we don't know nearly enough about them to say that (any news article which referred to the planets themselves as "habitable" needs firm correction). Three of them are within the habitable zone of the star, which is defined as the region around the star where liquid water could potentially be found on ...


13

For Jovian and Saturnine moons, the simplest answer is no, at least not much more habitable than our own Moon is, because none of these moons have their own magnetic field or sufficient mass and their atmosphere would eventually thin out via the ionospheric hydrogen loss due to the solar wind. A bit more difficult answer is how many of these moons would be ...


8

The temperature estimate is based on no atmosphere. For instance, Earth, without our atmosphere, would have an average temperature of -20°C . The equator should be warmer, and any atmosphere will also add heat. Also, the objects are most likely tidally locked, which means that a single side of the planet will always face it's star, making it even warmer in ...


5

Here's yesterday's media briefing (audio stream) that explains what this announcement is all about, on top of already linked to news article. Many other links are available on Kepler Planet Bonanza press kit, including presentation slides (PDF, 27MB warning!). The table of confirmed planets is published on Kepler pages, including planet characteristics, ...


2

On the first reading I thought you were asking about possible earth like moons orbiting gas giants in habitable zones of other star systems. This is fairly plausible in my opinion. I can't think of a reason why moons of about earth's mass couldn't be orbiting some of the gas giant exo-planets But on rereading it seems like you're asking about duplicates of ...


2

There is a list of confirmed planets, but this does not identify which planets were confirmed by the Lissauer and Rowe teams. Their papers (Lissauer, Rowe (large PDFs)) don't identify all of the planets they've confirmed. This presentation (pdf) says that 4 planets are in the habitable zone.


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