New Discovery on Exoplanet K2-18b Points to Signs of Life 124 Light-Years from Earth

Written by Bruno Teles

Published on 19/04/2025 at 11:11

Cientistas de Cambridge fazem nova descoberta com o telescópio James Webb: sinais de compostos orgânicos em exoplaneta K2-18b podem indicar vida fora da Terra.

5 people reacted to this.

James Webb Telescope Identifies Rare Organic Compounds in the Atmosphere of Planet with Global Ocean

A new discovery made by scientists from Cambridge detected signs of possible biosignatures in the atmosphere of the exoplanet K2-18b. The data were obtained by the James Webb Space Telescope and may indicate biological activity beyond Earth.

New Discovery on Exoplanet K2-18b Could Change the Course of Astrobiology

The team led by astrophysicist Nikku Madhusudhan from the University of Cambridge made a new discovery with historic potential. For the first time, compounds such as dimethyl sulfide (DMS) and dimethyl disulfide (DMDS) were identified in the atmosphere of a planet outside the Solar System. These compounds are exclusively produced by living organisms such as marine phytoplankton on Earth.

The observations were made using the James Webb Space Telescope (JWST), aimed at the exoplanet K2-18b, located in the constellation Leo, 124 light-years from Earth. The planet is classified as “Hycean”, with a global ocean and hydrogen-rich atmosphere, orbiting its star every 33 days.

ARTICLE CONTINUES BELOW

New Discovery Does Not Confirm Life, But Opens a New Path

The new discovery shows a statistical significance of 3σ, which represents a 99.7% chance that the signals of DMS and DMDS are real. Nonetheless, researchers caution that the existence of life cannot yet be confirmed, as the certainty margin for a definitive confirmation needs to reach 5σ.

There is also the possibility that the detected compounds have a non-biological origin. Therefore, further observations from the JWST will be conducted in the coming years to reinforce or refute the results.

Importance of Planets in the Habitable Zone

K2-18b is 8.6 times more massive and 2.6 times larger than Earth. Its position in the so-called “habitable zone” indicates that liquid water may exist on its surface. This new discovery reinforces the importance of studying exoplanets with these characteristics, which present theoretical conditions to host life.

If confirmed, this will be the first time that biosignatures are detected in the atmosphere of an exoplanet with potential to support living organisms. This advancement also demonstrates the power of the JWST as a tool in the search for extraterrestrial life.

New Discovery on Exoplanet K2-18b Points to Signs of Life 124 Light-Years from Earth

James Webb Telescope Identifies Rare Organic Compounds in the Atmosphere of Planet with Global Ocean

New Discovery on Exoplanet K2-18b Could Change the Course of Astrobiology

New Discovery Does Not Confirm Life, But Opens a New Path

Importance of Planets in the Habitable Zone

While an average building in London or New York takes three years to be completed, in China a 26-story tower went up in five days with about 100 workers, and the global modular construction market already moves US$ 95 billion per year.

Australia installs giant concrete structures on the seabed 800 meters from the shore to create an ocean intake for desalination that will draw in saltwater and produce 30 million liters of drinking water per day.

While a traditional school may take several days just to raise walls, in Malawi a 3D-printed school had its structure ready in 18 hours, welcomed children in June, and showed a new solution to the lack of classrooms.

Goodbye traditional washing machine: Panasonic surprises housewives with the NA-G5 featuring four drums, a 13 kg washer and dryer, a 12 kg dryer, independent mini washers, a heat pump, and a 4-in-1 system awarded at the German Design Award.

While cities spend fortunes patching potholes and tons of plastic become waste, the Netherlands transforms over 218,000 recycled cups into a modular bike path that can conceal drainage, cables, and pipes.

Empty beer bottle turns into sand, and the sand turns into concrete: an American city has discovered how to recycle glass locally using a solar-powered truck that crushes five tons of bottles per day in a local circular economy project.

While treasure hunters compete for the San José in Colombia and the Atocha in Florida, Andalusian archaeologists map a 17th-century Spanish galleon with 27 intact cannons and evidence of cargo linked to the colonial silver fleet at just 6 meters deep in the Bay of Cádiz.

While the US and China compete over who will first deploy a hypersonic aircraft on a commercial route, JAXA tested a 2-meter demonstrator with a hydrogen ramjet engine in 2026 under conditions equivalent to Mach 5 with an external temperature of 1832 degrees Fahrenheit.

Attention: Bolsa Família app will undergo changes and the update will reach 19 million families

While traditional driving schools lose 70% of enrollments, the Brazilian government saves R$ 1.8 billion in 5 months with the free theoretical CNH course on the official app and exempts 1.5 million candidates from the mandatory 45 hours.

While Tesla is still awaiting approval for FSD in China, XPENG deploys the country’s first mass-produced robotaxi unit in Guangzhou, with 3,000 TOPS of computing power and latency under 80 ms without LiDAR.

New Discovery on Exoplanet K2-18b Points to Signs of Life 124 Light-Years from Earth

James Webb Telescope Identifies Rare Organic Compounds in the Atmosphere of Planet with Global Ocean

New Discovery on Exoplanet K2-18b Could Change the Course of Astrobiology

New Discovery Does Not Confirm Life, But Opens a New Path

Importance of Planets in the Habitable Zone

While an average building in London or New York takes three years to be completed, in China a 26-story tower went up in five days with about 100 workers, and the global modular construction market already moves US$ 95 billion per year.

Australia installs giant concrete structures on the seabed 800 meters from the shore to create an ocean intake for desalination that will draw in saltwater and produce 30 million liters of drinking water per day.

While a traditional school may take several days just to raise walls, in Malawi a 3D-printed school had its structure ready in 18 hours, welcomed children in June, and showed a new solution to the lack of classrooms.

Goodbye traditional washing machine: Panasonic surprises housewives with the NA-G5 featuring four drums, a 13 kg washer and dryer, a 12 kg dryer, independent mini washers, a heat pump, and a 4-in-1 system awarded at the German Design Award.

While cities spend fortunes patching potholes and tons of plastic become waste, the Netherlands transforms over 218,000 recycled cups into a modular bike path that can conceal drainage, cables, and pipes.

Empty beer bottle turns into sand, and the sand turns into concrete: an American city has discovered how to recycle glass locally using a solar-powered truck that crushes five tons of bottles per day in a local circular economy project.

Soot from rocket launches remains in the atmosphere for years and has a climate impact 540 times greater than pollution emitted near the Earth’s surface. Mega constellations like Starlink will account for 42% of the space sector’s climate impact by 2029.

NASA plans a network of fuel stations in space that could reduce the cost of missions to the Moon and Mars. A satellite will be launched by a Rocket Lab rocket and will test technology that allows spacecraft to be refueled in orbit instead of carrying all the fuel from Earth.

While NASA targets astronauts on the Moon and the world is still planning how to colonize the satellite, China is preparing a 100 kg robot with wheels and mechanical arms to test lunar materials and pave the way for building a base at the lunar south pole.

Google tries to turn the page on the failure of Glass and bets on smart glasses with Gemini, a hidden camera in the frame, and private audio directly to the user’s ear.

Brazil manufactures a 342-ton transformer with direct current technology to transport energy over long distances in Saudi Arabia. An operation that was supposed to last a month was completed in eight days, and shipment is scheduled for June.

While treasure hunters compete for the San José in Colombia and the Atocha in Florida, Andalusian archaeologists map a 17th-century Spanish galleon with 27 intact cannons and evidence of cargo linked to the colonial silver fleet at just 6 meters deep in the Bay of Cádiz.

While the US and China compete over who will first deploy a hypersonic aircraft on a commercial route, JAXA tested a 2-meter demonstrator with a hydrogen ramjet engine in 2026 under conditions equivalent to Mach 5 with an external temperature of 1832 degrees Fahrenheit.

Attention: Bolsa Família app will undergo changes and the update will reach 19 million families

While traditional driving schools lose 70% of enrollments, the Brazilian government saves R$ 1.8 billion in 5 months with the free theoretical CNH course on the official app and exempts 1.5 million candidates from the mandatory 45 hours.

While Tesla is still awaiting approval for FSD in China, XPENG deploys the country’s first mass-produced robotaxi unit in Guangzhou, with 3,000 TOPS of computing power and latency under 80 ms without LiDAR.