Cosmic Scale
Kepler-452b
Super-Earth · 1,800 light-years
How big is Kepler-452b?
Kepler-452b is about 20,770 km across.
See Kepler-452b in 3D, at true scale
Kepler-452b was announced in 2015 as the closest thing yet to an Earth twin: a slightly larger world orbiting a Sun-like star on a 385-day year, right in the habitable zone. Later analysis has questioned whether the signal is a planet at all.
At a glance
| Diameter | 20,770 km |
|---|---|
| Diameter compared with Earth | 1.63 × Earth |
| Distance | 1,800 light-years |
| Year | 385 days |
| Size | 1.6× Earth |
| Star | Sun-like, 6 billion years old |
Good to know
- Its star is older and brighter than the Sun, so the planet may be entering a runaway greenhouse phase.
- At that distance, confirming it will need instruments we do not yet have.
- It was nicknamed 'Earth's older cousin' rather than a twin, for good reason.
- Next smaller: Earth · 12,740 km
- Next larger: 55 Cancri e · 23,950 km