CosmosX/ Marketplace Hub
Stellar Testnet

Your Achievements

Your on-chain proofs of CosmosX completion — verified on Stellar, non-transferable.

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Mercury Graduate
Testnet · Mercury

Complete the Mercury curriculum to mint your Testnet achievement.

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CosmosX Graduate
Mainnet · Soulbound

Mint the soulbound Mainnet NFT to claim your permanent on-chain credential.

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Wanna trade on Mainnet?

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Mainnet Assets

Published exoplanet assets in the CosmosX ecosystem. View or trade them through the external marketplace.

Kepler-452bLegendary
Super-Earth1402 ly265 K

Often referred to as Earth's Cousin or Earth 2.0, Kepler-452b orbits a G2V star very similar to our Sun in the habitable zone. It is 60% larger than Earth and has a high probability of possessing a rocky surface and atmospheric water vapour.

Supply: 1/1Trade
TRAPPIST-1eLegendary
Terrestrial39.5 ly251 K

Located in the ultra-cool dwarf star system TRAPPIST-1, planet e is the most Earth-like in terms of size, density, and stellar radiation. It resides in the core of the habitable zone, with high potential for liquid water oceans and a stable atmosphere.

Supply: 5/5Trade
Proxima Centauri bEpic
Terrestrial4.24 ly234 K

The closest known exoplanet to Earth, Proxima Centauri b orbits in the habitable zone of our solar system's nearest stellar neighbor. Despite stellar flares from its red dwarf host, it remains one of the prime candidates for search of biosignatures.

Supply: 10/10Trade
55 Cancri eLegendary
Super-Earth41 ly2400 K

A carbon-rich super-Earth so close to its star that its surface is a molten ocean of lava. Due to intense pressure and carbon abundance, scientists hypothesize that a significant fraction of its mass could be crystallized carbon, effectively making it a diamond world.

Supply: 3/3Trade
HD 189733bEpic
Gas Giant64.5 ly1200 K

A beautiful cobalt blue gas giant with a deadly climate. It rains molten glass sideways at speeds of over 5,400 mph. Its blue hue comes from light scattering off silicate particles suspended in its high-temperature atmosphere.

Supply: 8/8Trade
WASP-12bEpic
Gas Giant1410 ly2500 K

An egg-shaped 'hot Jupiter' orbiting so close to its star that it is being slowly devoured. The star's tidal forces stretch the planet into an ellipsoid and strip its outer layers, creating a massive shroud of gas surrounding the system.

Supply: 6/6Trade
K2-18bRare
Super-Earth124 ly265 K

A sub-Neptune super-Earth orbiting in the habitable zone. In 2019, water vapor was detected in its atmosphere, and recent observations suggest it could be a 'Hycean' planet - a world covered in liquid water oceans under a hydrogen-rich atmosphere.

Supply: 15/15Trade
LHS 1140 bRare
Super-Earth48.8 ly230 K

A super-Earth orbiting a quiet red dwarf star. It has a density twice that of Earth, suggesting a rocky metal-rich composition. It lies in the habitable zone, making it a prime candidate for studying rocky planet atmospheres.

Supply: 12/20Trade
Kepler-16bLegendary
Gas Giant245 ly188 K

Known as the real-world Tatooine, Kepler-16b is a cold Saturn-mass gas giant orbiting a binary star system. Standing on its surface (if it had one), you would see two suns set on the horizon, creating a spectacular double-shadow effect.

Supply: 2/2Trade
Gliese 504 bEpic
Gas Giant57.3 ly510 K

A jovian planet famous for its striking pink color. Because it is a young planet (about 160 million years old), it still glows with the heat of its formation, casting a magenta hue. It orbits its Sun-like star at a distance nine times that of Jupiter's orbit.

Supply: 4/4Trade
TOI-700 dRare
Terrestrial101.4 ly269 K

An Earth-sized planet orbiting in the habitable zone of an M-dwarf star. It is one of the few Earth-sized planets discovered in a habitable zone by NASA's TESS mission and is expected to have liquid water and a moderate climate.

Supply: 15/15Trade
OGLE-2005-BLG-390LbUncommon
Super-Earth21500 ly50 K

Nicknamed Hoth, this super-Earth is one of the most distant planets discovered. It orbits a red dwarf star so far away and in such a cold orbit that its surface temperature is a frozen 50 K (-223°C), leaving its entire oceans locked in deep ice.

Supply: 25/25Trade