The listed value is the approximate present distance from Earth. Interstellar destinations move, but the difference is negligible compared with the enormous journey time at current spacecraft speeds.
Complete world information
Gliese 12 b
Its size, temperate irradiation and relatively quiet host make it a high-priority target for learning whether small planets keep atmospheres.
Scientific status
No exoplanet is confirmed habitable or inhabited. Habitable-zone position only means that liquid surface water could be possible under the right atmospheric conditions. Rate the Earth percentages are editorial comparison scores, not scientific probabilities.
Rate the Earth habitability percentages are editorial comparison scores, not scientific proof of habitability or life.NASA-inspired scientific artist conceptTemperate Earth-sized world concept
Rate the Earth habitability comparison60%
Strong characterization target — atmosphere not yet established
Probability of other life37%
Candidate for simple life
Minimum delay for information travelling at light speed.
Approximate send-and-reply delay before processing time.
No spacecraft has travelled to this system
Image gallery
Gliese 12 b observed images and realistic concepts
Real mission or telescope imagery is shown when available; otherwise the closest realistic concept is used and clearly identified.
Photorealistic scientific concept
Gliese 12 b realistic orbital concept
A high-resolution scientific concept showing how Gliese 12 b could plausibly appear from orbit.
No resolved true photograph of this world exists, so the site shows a clearly identified realistic concept.Source: Rate the Earth scientific concept generator ↗
Photorealistic scientific concept
Gliese 12 b surface or atmosphere concept
A second realistic interpretation focused on the surface, clouds, atmosphere or horizon of Gliese 12 b.
This scene is an editorial scientific visualization, not a claimed photograph.Source: Rate the Earth scientific concept generator ↗Life potential
Could other life exist on Gliese 12 b?
Gliese 12 b is treated as a potentially habitable candidate, so this site assigns it a moderate editorial probability for simple non-human life.
Candidate for simple life
Why this score?
- Rate the Earth habitability comparison score: 60%.
- Atmosphere clue: Unknown; prime target for spectroscopy.
- Host-star context: Quiet M-type red dwarf.
- The catalog flags this world as a potentially habitable candidate.
This probability is an editorial astrobiology estimate based on public characteristics, not a formal scientific measurement.
Complete data sheet
Everything listed for Gliese 12 b
Measured values, estimates, discovery information and the main uncertainties are shown together below.
Travel calculation
How long would the journey take?
Straight-line arithmetic is compared with real mission history. Actual trajectories depend on orbital mechanics, acceleration, braking, launch windows and gravity assists.
A physical reference only. A spacecraft with mass cannot reach light speed.
No operational spacecraft can sustain this interstellar cruise speed.
Still far beyond current spacecraft propulsion.
Parker reaches this speed only very close to the Sun; it is not an interstellar cruise speed.
A comparison using a real high-energy launch from Earth.
A practical comparison with a spacecraft already moving into interstellar space.
Research guide
What we know, and what we do not know
What is directly known
The planet itself is not resolved as a detailed globe. Its existence and properties are inferred mainly through transit, together with measurements of the host star.
What remains unknown
Surface geography, oceans, continents, clouds and living organisms have not been directly observed. Atmosphere and composition may also remain uncertain.
What is known
Gliese 12 b is close to Earth in measured radius and orbits a comparatively quiet M-type star every 12.8 days.
Habitability limits
Its atmosphere is unknown. The same measured size could correspond to an airless rock, a Venus-like greenhouse or a more temperate world.
Why it stands out
At roughly 40 light-years, it is one of the nearest temperate transiting Earth-sized planets suitable for atmospheric follow-up.