New “Super-Earth” Discovered Just 20 Light-Years Away: Rocky Planet Four Times Larger May Harbor Life and Rekindles Search for Habitable Worlds Beyond the Solar System

Written by Valdemar Medeiros

Published on 29/10/2025 at 10:25

Foto: Nova “super-Terra” é descoberta a apenas 20 anos-luz da Terra: planeta rochoso quatro vezes maior pode abrigar vida e reacende a busca por mundos habitáveis fora do Sistema Solar

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Astronomers Discover a Super-Earth Just 20 Light-Years from Earth, With Water and Temperature Similar to Earth, One of the Most Promising Candidates for Life Beyond the Solar System.

A new and promising candidate in the search for life beyond Earth has just been identified by astronomers from Penn State University (USA) and confirmed by NASA and ESA observatories. The planet, temporarily nicknamed “Super-Earth HD 45652 b”, was detected in late 2024 at a distance of just 20 light-years from the Solar System, one of the shortest distances ever recorded for an exoplanet with potentially habitable characteristics.

The results, published in the Astrophysical Journal Letters and reported by NASA itself, indicate that this celestial body has about four times the mass of Earth and a predominantly rocky composition, with a dense atmosphere and signs of geological activity. But what caught scientists’ attention the most was its location: it orbits a stable red dwarf star, within the so-called “habitable zone”, the orbital range where the temperature allows for the existence of liquid water — an essential ingredient for life as we know it.

The New Frontier of Astrobiology

HD 45652 b is classified as a super-Earth, a term used to describe planets with a mass between 1 and 10 times that of Earth.

ARTICLE CONTINUES BELOW

Possibility of Life and Atmospheric Composition

Using high-resolution spectroscopy, scientists detected signs of carbon dioxide and water vapor in the atmosphere, significantly increasing interest in studying the planet.

Although there is no confirmation of free oxygen, the main biological marker, the absorption pattern detected resembles that of planets with intense volcanic and oceanic activity.

“If the presence of oceans is confirmed, we may be facing the planet most similar to Earth ever found,” explained Lisa Kaltenegger, director of the Carl Sagan Institute (Cornell University).

The researcher argues that this world could become “the main target of the next generation of habitable telescopes,” such as HabEx and LUVOIR, missions planned by NASA for the 2030s.

Race for New Habitable Worlds

The discovery reinforces the exciting moment in planetary astronomy. Since 1995, when the first exoplanet was confirmed, more than 5,600 worlds beyond the Solar System have been cataloged, but only a fraction is within the habitable zone.

In the last five years, next-generation space telescopes have allowed the detection of smaller and closer planets, inaugurating a phase where the search for extraterrestrial life moves from the realm of fiction into the precision of data.

The planet HD 45652 b is now part of NASA’s restricted group of priority worlds for continuous observation. If future measurements confirm the presence of oxygen, methane, or chlorophyll, the finding could become one of the most important milestones in contemporary scientific history, redefining our understanding of our place in the cosmos.

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New “Super-Earth” Discovered Just 20 Light-Years Away: Rocky Planet Four Times Larger May Harbor Life and Rekindles Search for Habitable Worlds Beyond the Solar System

Astronomers Discover a Super-Earth Just 20 Light-Years from Earth, With Water and Temperature Similar to Earth, One of the Most Promising Candidates for Life Beyond the Solar System.

The New Frontier of Astrobiology

Possibility of Life and Atmospheric Composition

Race for New Habitable Worlds

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New “Super-Earth” Discovered Just 20 Light-Years Away: Rocky Planet Four Times Larger May Harbor Life and Rekindles Search for Habitable Worlds Beyond the Solar System

Astronomers Discover a Super-Earth Just 20 Light-Years from Earth, With Water and Temperature Similar to Earth, One of the Most Promising Candidates for Life Beyond the Solar System.

The New Frontier of Astrobiology

Possibility of Life and Atmospheric Composition

Race for New Habitable Worlds

Engineers want to carve through Africa with a giant canal to bring water from the world’s second-largest river to a dying lake on the edge of the Sahara Desert that has already lost 90% of its water.

A giant brown band visible from space, approximately 8,850 kilometers long, connected Africa to America in the Atlantic Ocean, and satellites revealed that it is neither land nor pollution, but the largest accumulation of seaweed in the world, which broke records in 2025.

Workers were opening a modern road in Dover when they found, 6 meters below the asphalt, a 3,500-year-old boat made of stitched oak and plant fibers.

Instead of burning or burying old tires, an American city is transforming about 2,000 of them into the street itself, paving its first sections with a quieter and more durable rubber asphalt.

In just one cast, fishermen are surprised to capture 14,096 mullets in Bombinhas and close a historic season with 58,000 fish; scene recorded in the Santa Catarina paradise marks the last day of the 2026 season.

Consumers eat six times more chicken than in the 1960s, global meat supply quadruples in 60 years, and FAO report reveals the invisible cost on the plate: livestock could drive 80% of the increase in agricultural emissions over the next decade.

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