For the first time, TTV enabled the detection of a super-Earth named Kepler-725c, which is about 10 times the mass of Earth and orbits within the habitable zone of a Sun-like star, Kepler-725. The findings were published in Nature Astronomy.
Kepler-725c’s orbit and habitability
Kepler-725c—the newly discovered non-transiting planet—orbits a G9V host star. With an orbital period of 207.5 days and a semi-major axis of 0.674 AU, it receives roughly 1.4 times the solar radiation that Earth does. During part of its orbit, the planet lies within the host star’s habitable zone, making it a potential candidate for habitability.
So it has 10 times the mass of Earth, it gets 40% more radiation from its parent star than Earth, it’s within the Goldilocks zone during only part of its transit around the parent star, and it’s 1,200 light years away.
It’s a big step forward when it comes to using the TTV detection method. But this is pretty far from the “Earth 2.0” it’s being hyped up to.
If you had a warp drive it would be interesting to see in person I guess?
What would the gravity be for a planet 10 times the mass of Earth?
That would depend on it’s radius at surface level. Can’t find that figure.
I’m gonna make a naive atempt.
Lets say both earth and kepler-c has similar relationships between mass and volume and that they are spheres.
Earth radius: rₑ = ~6371 km
Earth mass: mₑ = ~5.972168×10²⁴ kg
Kepler-c mass: mₖ = ~10mₑ
Gravity konstant: G = ~6.674 x 10^⁻¹¹ m³kg⁻¹s⁻²Kepler-c Radius:
4/3πrₖ³ = 40/3πrₑ³ → rₖ = rₑ³√10 ≈ 13726 kmGravity at Kepler-c surface:
gₖ = Gmₖ / rₖ² = ~21 m/s²Compare that to earths 9.8 m/s². You would feel about twice as heavy. Time to loose that beer belly. Also pack a helmet, compression pants and sun screen.
It depends. It would probably be close to 10 times earths gravity, but it depends on the density of the planet, since gravity falls off following the inverse square law.
Even though there is more total mass, more of that mass should be farther away from you, so it’s probably only 5-8 times earths gravity.
So pretty much safe to say no human will be able to live there even if we could get there today.
Well, that depends. You would have 1200 years to Goku up before putting it to the test.
1200 light years from earth
