What it’s like to stand here
GJ 238 b
- weight
- ≈ 0.39 g
- sun
- 20.3× wider
- sky
- deep orange
Illustration computed from this world’s measured and derived values, not a photograph.
Rocky world
GJ 238 b
Transit: spotted by the tiny, repeating dip in its star’s light each time the planet crosses in front of it.
GJ 238 →
host star
0.57 R⊕
radius
0.13 M⊕
mass · estimated from radius
1.7 days
orbital period
485°C (905°F)
avg temp
What it's like to stand here
≈ 0.39 g
your weight (mass estimated from size)
1.7 days
one year, in Earth time
20.3× wider
how big its sun looks vs ours
deep orange
midday sky tint
2.5×
how high you could jump vs Earth
likely
likely tidally locked: probably eternal day on one side, night on the other
How long to get there · 49.6 ly away
Jet airliner
59.5 million years
dies en route1000-yr cryo: fails
Parker Solar Probethe fastest craft ever built
77,391 years
dies en route1000-yr cryo: fails
Light speed
50 years
arrives elderly
Warp 10
18 days
arrives thriving
Folding spacetime
instant
arrives thriving
Size vs Earth
Explore from here · roam the neighborhood
Host star
GJ 238
M2.5 V · 1 planet
Sibling worlds in this system
No other confirmed planets here yet. New ones auto-appear as telescopes report.
Nearby star systems
Similar worlds (size · gravity · star)
Zoom out: star → system → (soon) galaxy arm, host black hole, and a real image of the host galaxy.
Can you see it tonight? · observe
SMALL TELESCOPE NEEDED
Gear bridge
Matched telescope & eyepiece recommendations are coming. Any product links will carry a clear affiliate disclosure.
Illustration generated from GJ 238 b's confirmed parameters, not a photograph.