LONDON: Astronomers have found possible chemical signs of life on a distant planet outside our solar system, though they caution more work is needed to confirm their findings.
The research, led by scientists at the University of Cambridge, detected evidence of compounds in the exoplanet’s atmosphere that on Earth are only produced by living organisms and contended it’s the strongest potential signal yet of life.
Independent scientists described the findings as interesting, but not nearly enough to show the existence of life on another planet.
“It is the strongest sign to date of any possibility of biological activity outside the solar system,” Cambridge astrophysicist Nikku Madhusudhan said during a livestream on Thursday.
By analyzing data from the James Webb Space Telescope, the researchers found evidence of dimethyl sulfide and dimethyl disulfide in the atmosphere of the planet known as K2-18b. The planet is 124 light-years away; one light-year is equivalent to nearly 6 trillion miles.
On Earth, those two compounds are produced primarily by microbial life, such as marine phytoplankton.
The planet is more than double Earth’s size and more than 8 times more massive. It’s in the so-called habitable zone of its star. The study appeared in the journal Astrophysical Journal Letters.
Madhusudhan stressed that further research is needed to rule out any errors or the possibility of other processes, besides living organisms, that could produce the compounds.
David Clements, an astrophysicist at Imperial College London, said atmospheres on other planets are complex and difficult to understand, especially with the limited information available from a planet so far away.
“This is really interesting stuff and, while it does not yet represent a clear detection of dimethyl sulfide and dimethyl disulfide, it is a step in the right direction,” he said in comments released by the Science Media Center in London.
More than 5,500 planets orbiting other stars have been confirmed so far. Thousands more are in the running out of the billions out there in our Milky Way galaxy alone.
Launched in 2021, Webb is the biggest and most powerful observatory ever sent into space.
Scientists find possible chemical signs of life on a faraway planet
https://arab.news/62pwd
Scientists find possible chemical signs of life on a faraway planet
- Researchers found evidence of dimethyl sulfide and dimethyl disulfide in the atmosphere of the planet known as K2-18b
- On Earth, those two compounds are produced primarily by microbial life, such as marine phytoplankton
Egypt reveals restored colossal statues of pharaoh in Luxor
- Amenhotep III, one of the most prominent pharaohs, ruled during the 500 years of the New Kingdom, which was the most prosperous time for ancient Egypt
LUXOR: Egypt on Sunday revealed the revamp of two colossal statues of a prominent pharaoh in the southern city of Luxor, the latest in the government’s archeological events that aim at drawing more tourists to the country.
The giant alabaster statues, known as the Colossi of Memnon, were reassembled in a renovation project that lasted about two decades. They represent Amenhotep III, who ruled ancient Egypt about 3,400 years ago.
“Today we are celebrating, actually, the finishing and the erecting of these two colossal statues,” Mohamed Ismail, secretary-general of the Supreme Council of Antiquities, said ahead of the ceremony.
Ismail said the colossi are of great significance to Luxor, a city known for its ancient temples and other antiquities. They’re also an attempt to “revive how this funerary temple of King Amenhotep III looked like a long time ago,” Ismail said.
Amenhotep III, one of the most prominent pharaohs, ruled during the 500 years of the New Kingdom, which was the most prosperous time for ancient Egypt. The pharaoh, whose mummy is showcased at a Cairo museum, ruled between 1390–1353 BC, a peaceful period known for its prosperity and great construction, including his mortuary temple, where the Colossi of Memnon are located, and another temple, Soleb, in Nubia.
The colossi were toppled by a strong earthquake in about 1200 BC that also destroyed Amenhotep III’s funerary temple, said Ismail.
They were fragmented and partly quarried away, with their pedestals dispersed. Some of their blocks were reused in the Karnak temple, but archeologists brought them back to rebuild the colossi, according to the Antiquities Ministry.
In late 1990s, an Egyptian German mission, chaired by German Egyptologist Hourig Sourouzian, began working in the temple area, including the assembly and renovation of the colossi.
“This project has in mind … to save the last remains of a once-prestigious temple,” she said.
The statues show Amenhotep III seated with hands resting on his thighs, with their faces looking eastward toward the Nile and the rising sun. They wear the nemes headdress surmounted by the double crowns and the pleated royal kilt, which symbolizes the pharaoh’s rule.
Two other small statues on the pharaoh’s feet depict his wife, Tiye.
The colossi — 14.5 meters and 13.6 meters respectively — preside over the entrance of the king’s temple on the western bank of the Nile. The 35-hectare complex is believed to be the largest and richest temple in Egypt and is usually compared to the temple of Karnak, also in Luxor.
The colossi were hewn in Egyptian alabaster from the quarries of Hatnub, in Middle Egypt. They were fixed on large pedestals with inscriptions showing the name of the temple, as well as the quarry.
Unlike other monumental sculptures of ancient Egypt, the colossi were partly compiled with pieces sculpted separately, which were fixed into each statue’s main monolithic alabaster core, the ministry said.
Sunday’s unveiling in Luxor came just six weeks after the inauguration of the long-delayed Grand Egyptian Museum, the centerpiece of the government’s bid to boost the country’s tourism industry. The mega project is located near the famed Giza Pyramids and the Sphinx.
In recent years, the sector has started to recover after the coronavirus pandemic and amid Russia’s war on Ukraine — both countries are major sources of tourists visiting Egypt.
“This site is going to be a point of interest for years to come,” said Tourism and Antiquities Minister Sherif Fathy, who attended the unveiling ceremony. “There are always new things happening in Luxor.”
A record number of about 15.7 million tourists visited Egypt in 2024, contributing about 8 percent of the country’s GDP, according to official figures.
Fathy, the minister, has said about 18 million tourists are expected to visit the country this year, with authorities hoping for 30 million visitors annually by 2032.
