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In a discovery that has reignited excitement in the search for extraterrestrial life, astronomers have identified TOI-1452 b – a fascinating “super-Earth” exoplanet located roughly 100 light-years away in the constellation Draco. This distant world, first detected in 2022, is emerging as one of the strongest candidates yet for a water world a planet potentially covered entirely by a deep global ocean.
Unlike Earth, where water makes up less than 1% of the planet’s mass, models suggest that up to 30% of TOI-1452 b’s mass could be water. That would mean vast oceans hundreds of kilometers deep, with no continents or dry land in sight a truly alien seascape.
A Super-Earth in the Habitable Zone TOI-1452 b is about 70% larger in diameter and roughly five times more massive than Earth. It orbits a cool red dwarf star in a binary system every 11.1 days, placing it squarely within the star’s habitable zone the sweet spot where temperatures could allow liquid water to exist on the surface.
warm, but Current estimates put the planet’s average temperature at around 53°C (127°F) potentially suitable for liquid oceans beneath a thick atmosphere. Its lower-than-expected density rules out a purely rocky composition and strongly points toward a water-rich world.
Discovered using NASA’s Transiting Exoplanet Survey Satellite (TESS) and confirmed with ground-based telescopes like the Canada-France-Hawaii Telescope’s SPIRou instrument, TOI-1452 b stands out as one of the best ocean planet candidates found to date
While the “global ocean” hypothesis is based on mass, radius, and density modeling rather than direct imaging, the planet has become a prime target for the James Webb Space Telescope (JWST). Astronomers hope JWST’s powerful instruments will analyze its atmosphere for water vapor and potential biosignatures – chemical clues that could indicate the presence of life.