ALL TOURS

The nearest worlds

closest first, starting next door
This tour

Distance is the one exoplanet number that needs no explanation. This walk starts at the closest planet to Earth outside the solar system and works outward, a few light-years at a time. Every star here is a naked-eye or small-telescope object — you can point at where these planets are tonight, and each planet page will show you where in the sky to look.

How picked

Picked automatically from the current data: sorted by distance from Earth, closest first, one per star system. The solar system's own planets are excluded — they are on the 'Start here' tour.

STOP of 10

Arrow keys ← → step through the tour; on a phone, swipe sideways.

PHASE

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Click a hex to copy it

4.2 ly

Proxima Centauri b

Proxima Centauri · 2,900 K · M5.5 V Modelled

The closest known planet outside the solar system: 4.2 light-years, in Centaurus, orbiting Proxima Centauri. Its modelled colour: its 2,900 K red-dwarf sun puts out almost nothing except red and infrared light, so the colour owes more to the star than to the planet; underneath that, a bare rocky surface hands its star's light back with barely any change.

⚠ ABOUT THIS SWATCHThis colour falls outside the range a screen can display — the swatch is the closest your screen can get.

Temperature
218 K
Size
1.0 × Earth's radius
Distance
4.2 light-years
Reflects
18.3 % of the light that reaches it
As Roman would see it
#ffb568 ΔE 1
Model assumes
rocky / thin atmosphere (grey)
Open the full planet page →