Looking for the Earth Next Door

Where is everybody? That’s the question physicist Enrico Fermi asked when realizing that the high probability of extraterrestrial life never matched any empirical observation. So far, no evidence of alien existence has been established on an exoplanet — a planet outside of our Solar System — this is why astrophysicists have been focusing on studying the diversity of planets and the habitability of other worlds. Mars is the closest candidate for a planet Earth #2, but what else lies outside of our Solar system?

How close are we to living on another planet?

The Hall of Fame of exoplanets

Proxima Cen b
Travelling time
3.9 Lightyears
Gravity
1.01 x Earth
Surface Temperature
-9.3 Celsius
Radius
1.12 x Earth
Kapteyn b
Travelling time
11.7 Lightyears
Gravity
1.79 x Earth
Surface Temperature
-26.9 Celsius
Radius
1.64 x Earth
GJ 667 C c
Travelling time
20.4 Lightyears
Gravity
1.61 x Earth
Surface Temperature
13.3 Celsius
Radius
1.54 x Earth
GJ 667 C f
Travelling time
20.4 Lightyears
Gravity
1.39 x Earth
Surface Temperature
-14.3 Celsius
Radius
1.4 x Earth
GJ 667 C e
Travelling time
20.4 Lightyears
Gravity
1.39 x Earth
Surface Temperature
-46.0 Celsius
Radius
1.4 x Earth
TRAPPIST-1 g
Travelling time
36.3 Lightyears
Gravity
1.06 x Earth
Surface Temperature
-57.0 Celsius
Radius
1.13 x Earth
TRAPPIST-1 f
Travelling time
36.3 Lightyears
Gravity
0.61 x Earth
Surface Temperature
-43.4 Celsius
Radius
1.04 x Earth
TRAPPIST-1 e
Travelling time
36.3 Lightyears
Gravity
0.76 x Earth
Surface Temperature
-12.8 Celsius
Radius
0.92 x Earth
LHS 1140 b
Travelling time
37.4 Lightyears
Gravity
3.23 x Earth
Surface Temperature
-27.3 Celsius
Radius
1.43 x Earth
Kepler-186 f
Travelling time
516.0 Lightyears
Gravity
1.07 x Earth
Surface Temperature
-50.1 Celsius
Radius
1.17 x Earth
Kepler-1229 b
Travelling time
708.0 Lightyears
Gravity
1.39 x Earth
Surface Temperature
-21.7 Celsius
Radius
1.4 x Earth
Kepler-1652 b
Travelling time
756.0 Lightyears
Gravity
1.01 x Earth
Surface Temperature
-9.8 Celsius
Radius
1.12 x Earth
Kepler-442 b
Travelling time
1026.0 Lightyears
Gravity
1.3 x Earth
Surface Temperature
-2.6 Celsius
Radius
1.34 x Earth
Kepler-62 f
Travelling time
1104.0 Lightyears
Gravity
1.41 x Earth
Surface Temperature
-33.6 Celsius
Radius
1.41 x Earth