What it’s like to stand here
Kepler-155 c
weight
≈ 1.13 g
sun
2.6× wider
sky
amber-orange

Illustration computed from this world’s measured and derived values, not a photograph.

Sub-Neptune · likely temperate

Kepler-155 c

Kepler-155 c is a confirmed sub-Neptune exoplanet 957 ly from Earth in the constellation Cygnus, discovered in 2014 by Kepler.

Transit: spotted by the tiny, repeating dip in its star’s light each time the planet crosses in front of it.

Kepler-155
host star
2.24 R⊕
radius
5.65 M⊕
mass · estimated from radius
53 days
orbital period
13°C (55°F)
avg temp
Human scale

Standing on Kepler-155 c, you would weigh roughly about 13% more than you do on Earth. Its orange dwarf looks 2.6× wider than ours, bathing the surface in amber-orange light. It is likely tidally locked, so that sun never moves in the sky: one hemisphere in endless day, the other in permanent night. A year passes in just 53 days, and at an estimated 13°C (55°F) it is cold.

≈ 1.13 g
your weight (mass estimated from size)
53 days
one year, in Earth time
2.6× wider
how big its sun looks vs ours
amber-orange
midday sky tint
0.9×
how high you could jump vs Earth
likely
likely tidally locked: probably eternal day on one side, night on the other
Calculate your exact weight on Kepler-155 c
Earth Similarity Index0.74#93 of 5,788 ranked worlds

How closely this world matches Earth in size and warmth, from 0 to 1 (Earth = 1.0). Computed by gravityfinder. See every world ranked →

What these mean: surface gravity · tidal locking · equilibrium temperature · Earth similarity · habitable zone

If your children grew up herea playful thought experiment
EARTH HEIGHT≈ 0.98xEARTH-RAISEDRAISED HERE
much like Earth height

Gravity close to Earth's, at about 1.1 times. A child would grow up much as they would back home.

A playful thought experiment from this world’s gravity, not a prediction about any real person. No human has ever grown up off Earth, so no one truly knows; the direction (taller in low gravity, shorter and stockier in high) follows how growing bodies respond to weight.

Hear how a voice sounds herea computed acoustic demo

Your voice would sound much as it does on Earth.

Assuming Earth-like air at this world's temperature of about 13°C (55°F), sound would travel close to its Earth speed, so your voice would sound much as it does on Earth. The real atmosphere is unknown.

sound speed ≈ 339 m/s · 1.00× Earth · assumes Earth-like air

A real voice sample, pitch-shifted (tempo held constant) to suggest the acoustics: a playful approximation, not a precise simulation. Voice: Lingua Libre / Vealhurl, CC BY-SA 4.0.

The journey
Cosmic travel advisory
★★★★
Recommended, with reservations
  • Surface temperatures near 13°C (55°F) fall in the range where liquid water is at least possible.
  • Surface gravity is close to Earth's, about 1.13 times, so you would move much as you do here.
  • !Likely tidally locked: one hemisphere in endless day, the other in permanent night.

A playful read of Kepler-155 c’s measured and computed values, not a real advisory.

How long to get there · 957 ly away
Jet airliner
1.1 billion years
dies en route1000-yr cryo: fails
Parker Solar Probethe fastest craft ever built
1.5 million years
dies en route1000-yr cryo: fails
Light speed
957 years
dies en route1000-yr cryo: survives
Warp 10
349 days
arrives thriving
Folding spacetimeinstant, plus 1 hr of paperwork
1 hour
arrives thriving
Size vs Earth
EarthKepler-155 c is 2.2× the width of Earth
Explore from here · roam the neighborhood

Zoom out: star → system → (soon) galaxy arm, host black hole, and a real image of the host galaxy.

Can you see it tonight? · observe
FAINT: LARGE TELESCOPE NEEDED
Host-star brightnessmag 14.7
ConstellationCygnus
To see the host star10"+ (250 mm) telescope, dark sky
Gear bridge

Matched telescope & eyepiece recommendations are coming. Any product links will carry a clear affiliate disclosure.

Common questions

What is the gravity on Kepler-155 c?

Kepler-155 c's surface gravity is about 1.1 times Earth's, estimated from its size.

How much would you weigh on Kepler-155 c?

Someone who weighs 150 pounds on Earth would weigh about 169 pounds on Kepler-155 c.

How far is Kepler-155 c from Earth?

Kepler-155 c lies about 957 light-years from Earth.

How long would it take to get to Kepler-155 c?

At the speed of NASA's Parker Solar Probe, the fastest craft ever built, the journey would take about 1.5 million years.

How hot is Kepler-155 c?

Kepler-155 c's equilibrium temperature, the balance it reaches from its star's light alone before any greenhouse warming, is about 13°C (55°F).

Is Kepler-155 c habitable?

Kepler-155 c orbits near its star's habitable zone, the range of distances where liquid water could be stable, and its Earth-similarity index is 0.74. That makes it worth studying, but it is not evidence of life: we have no measurement of its atmosphere, water, or surface.

How long is a year on Kepler-155 c?

Kepler-155 c completes one orbit of its star in 53 days.

Illustration generated from Kepler-155 c's confirmed parameters, not a photograph.