Scientists detect “strongest evidence till date” of life outside our solar system
London: Astronomers have reported the strongest evidence yet of potential biological activity on a distant planet named K2-18b, located about 124 light-years away from Earth. The planet, which is more than twice the size of Earth, has shown signs of atmospheric molecules that, on Earth, are produced only by living marine organisms.
The discovery was made by an international team of scientists led by Indian Origin scientist Dr. Nikku Madhusudhan of the University of Cambridge. Using data collected by NASA’s James Webb Space Telescope, the team analyzed the chemical composition of the planet’s atmosphere. They found molecular signatures that suggest the possible presence of life-supporting processes.
“This is certainly the strongest sign we have seen yet,” said Dr. Madhusudhan in a television interview. “I can realistically say that we could confirm this signal within one or two years.” He added that if life is found on K2-18b, it could point to the likelihood of life being common across the galaxy.
The planet K2-18b is located in the habitable zone of its host star, a red dwarf. This is the region where temperatures could allow for the existence of liquid water—a key ingredient for life. The planet is about 2.5 times the size of Earth and sits roughly 700 trillion miles away.
The James Webb Space Telescope, launched in 2021, is equipped to detect and analyze the faint light that passes through a planet's atmosphere as it transits its star. This allows scientists to identify the presence of specific molecules. In the case of K2-18b, the molecules detected appear to be those that, on Earth, are associated with biological activity.
However, experts are urging caution. While the findings are promising, they remain inconclusive. The scientific team is in the process of preparing a detailed paper on the discovery and is expected to seek further observations to validate the results.
Catherine Heymans, the Astronomer Royal for Scotland, noted that even more detailed data might not provide a definite answer. “Even with perfect data, you still won’t be able to say that this is definitely of biological origin,” she said. “There are many unknowns in the universe, and other non-biological processes could produce similar signatures.”
The research team hopes that continued observations using the James Webb Space Telescope and other advanced instruments will offer greater clarity in the coming years.
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Karnataka govt tables Rs 14,767 cr supplementary estimates in assembly
Bengaluru (PTI): The Karnataka government on Monday tabled the supplementary estimates in the assembly, totalling Rs 14,767 crore of additional expenditure for the current fiscal.
Tabled by Revenue Minister Krishna Byre Gowda on behalf of Chief Minister Siddaramaiah, supplementary estimates are additional expenditures incurred by the government over and above the budget provisions.
In the fiscal ending March, additional expenditures include Rs 147 crore on the Sadhana Samavesha to mark two years of the Congress government and Rs 223 crore for railway barricading to prevent human-elephant conflict.
As per the supplementary estimates, the government spent Rs 1.25 crore to purchase a Volvo XC90 for former Prime Minister H D Deve Gowda.
It also includes -- Rs 1,025 crore to clear various irrigation works bills, Rs 15 crore for helicopter and air travels by Governor, CM, ministers and other VIPs, Rs 110 crore towards scholarship and tuition fee reimbursement for minority students, Rs 15 crore for development of various temples, maths and trusts.
The government also spent Rs 1.4 crore to print a book comprising 'selected' speeches of Governor Thaawarchand Gehlot, Rs 50 lakh to clear pending electricity and water bills of ministers' residences, Rs 10 crore towards rehabilitation of families affected by landslides at Meppadi in Wayanad, Kerala.
Rs 5 crore each for Brahmin Development Board and Arya-Vysya Development Corporation, Rs 60 lakh to Supreme Court senior advocate Kapil Sibal for two appearances representing the government, Rs 5.13 crore towards bills from the Belagavi winter session of the legislature, Rs 5.5 crore towards pending bills from the 2019 and 2021 Assembly bypolls and the upcoming Davangere South and Bagalkot bypolls, are among the expenditures incurred.
