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Indian astronomers plan to find first exo-moon using James Webb Space Telescope
BY S VENKAT NARAYAN
Our Special Correspondent
NEW DELHI: As the James Webb Space Telescope (JWST) begins science operations, Indian astronomers are ready to peer into the edge of the universe with the observatory. Astronomers from the Indian Institute of Astrophysics (IIA) in Bengaluru have developed a new model to trace exo-moons that have remained elusive to ground- and space-based telescopes.Exo-moons are natural satellites that revolve around exoplanets, which are orbiting stars, just as planets in our own Solar System revolve around the Sun. Astronomers will look for habitable exo-moons as they try to understand new worlds beyond our solar system.
A large number of exo-moons are expected to be present in the universe, and they may play a crucial role in the habitability of rocky exoplanets in the habitable zone of their host stars. While most exoplanets are detected through the photometric transit method, signals from exo-moons are too weak to detect, mainly because of their extremely small size.

The James Webb Space Telescope.
Professor Sujan Sengupta of the IIA, along with his graduate student Suman Saha, has developed an analytical model that uses the radius and orbital properties of the host planet and its moon. The model uses their parameters and incorporates various possible orientations of the moon-planet-star system to model the photometric transit light curve of moon-hosting exoplanets.
They will use co-alignment and non-coalignment of the orbits of the planet and the moon as parameters to model all the possible orbital alignments for a star-planet-moon system. “Using these generic models and the analysis of photometric transit light curves of exoplanets that are being obtained by JWST, a large number of exomoons can be detected in near future,” the Department of Science and Technology said in a statement.
Astronomers across the world are looking for habitable planets that fall in the Goldilocks zone, which marks the distance between a star and a planet where temperatures are just optimum for water and life to flourish. According to the researchers, an exo-moon around a gas giant planet like Jupiter in the habitable zone of the host star where the temperature is appropriate for water to exist in a liquid state may harbour life.
“Under favourable alignment of moon-planet-star, such an exo-moon may also be detected by JWST,” they said in a statement.
So far, there have been 500 exoplanets that have been discovered outside our solar system, which have varied ranges when it comes to their composition and characteristics. These include small, rocky worlds like Earth, gas giants many times larger than Jupiter, and hot-Jupiters in scorchingly close orbits around their stars.These planets have been discovered using several ground-based and space telescopes, such as Kepler, CoRoT, Spitzer, and Hubble space telescopes. However, the natural satellites or exomoons around any of these planets still remain untraced, unlike our Solar System which is flooded with moons around its host planets. OVER
Latest News
INS Udaygiri makes port call in Colombo
The Indian Naval Ship (INS) Udaygiri arrived at the Port of Colombo on an official visit today, 8 September 2026, where it was received by the Sri Lanka Navy in accordance with time-
honoured naval traditions.
INS Udaygiri is a 149.02m long Frigate, Commanded by Captain Vikas Sood. Meanwhile, the Commanding Officer of the visiting ship is scheduled to call on Commander Western Naval
Area, Rear Admiral Harsha De Silva at the Western Naval Command Headquarters.
Captain Sood served as the Defence Adviser at the Indian High Commission in Sri Lanka from July 2020 to October 2023.
During their stay in the island, the crew of INS Udaygiri will participate in several goodwill events organized by the Sri Lanka Navy to enhance camaraderie between the two forces.
The visiting personnel are also scheduled to visit prominent tourist and cultural locations across the island.
Additionally, Sri Lanka Navy personnel are expected to visit the ship for capability observation and knowledge sharing, and will conduct onboard training during its stay.
News
22A: Exclusion of 8 petitions questioned, action filed against SC Registrar, others
The Supreme Court has been petitioned seeking an explanation as to how eight petitions filed against the 22nd Amendment to the Constitution were not listed for hearing . Two of the petitioners, namely Dias Bandaralage Ajith Shantha Kumara Jayathilaka and Gunathilakage Dakum Dulara Gunathilaka, have requested an opportunity to examine the official Registry and parliamentary records so that all material facts may be objectively established. They said that their petitions that had been registered by the Supreme Court should have been heard along with other petitions.
The Registrar of the Supreme Court, Secretary General of Parliament, Speaker and the Attorney General have been named as the respondents.
The five-member bench that heard the petitions consisted of Chief Justice P. Padman Surasena, Achala Wengappuli, J, Arjuna Obeyesekere, J, Sampath B. Abayakoon, J and K.M.G.H. Kulatunga, J.
The petitioners sought the explanation in the absence of any judicial order dismissing, rejecting, striking out, terminating or otherwise disposing the said petitions. They have requested the disclosure of the complete procedural history of the unlisted cases.
The second petitioner Gunathilaka has referred to a speech by Jaffna District Independent MP Ramanathan Archuna in Parliament, on 21 August, 2026, regarding X-Press Pearl, a container carrier that sank off the port of Colombo, and related matters.
They have sought leave to proceed under Articles 17 and 126 of the Constitution and asked for a full Bench of the Supreme Court, or the widest Bench, constitutionally permissible.
They also requested that the Chief Justice and Achala Wengappuli refrain from participating in the hearing and determination of their application, having regard to the objective-appearance issue arising from their prior constitutional and judicial participation in matters forming part of the factual subject matter now requiring examination.
Meanwhile, General Secretary of Vinivida Foundation, Nagananda Kodituwakku, has requested the Supreme Court Registrar not to proceed with the determination of 22nd Amendment process, pending the hearing of fundamental rights petition filed by Chairman of the Vinivida Foundation lawyer, Sugandhika Fernando, seeking a full bench, excluding Chief Justice Preethi Padman Surasena, to hear the petitions challenging the 22nd Amendment Bill. She also requested that the hearing be suspended immediately until the matter was fully heard and determined.
Among the respondents are Chief Justice Surasena, the first respondent, and Attorney General Parinda Ranasinghe. Justices Yasantha Kodagoda, Shiran Gooneratne, Achala Wengappuli and Priyantha Fernando.
(SF)
News
Thailand shuts door on undesirables from Sri Lanka
Sri Lankan passport holders travelling to Thailand wouldn’t be eligible for visa-free entry from 15 September, 2026, according to a new visa notice issued by the Royal Thai Embassy in Colombo.
Under the new measures, all Sri Lankan travellers will be required to obtain a Thai visa before departing for Thailand. Visa applications must be submitted online through Thailand’s official e-Visa system.
The Royal Thai Embassy in Colombo has also clarified that it will not accept visa applications submitted in person or in physical form.
According to the Embassy, tourist visa applications submitted by Sri Lankan passport holders are expected to take approximately 3–7 working days, calculated from the date on which all required documents have been duly completed and submitted.
Processing times for Non-Immigrant Visa and DTV (Destination Thailand Visa) applications may take longer.
Foreign nationals residing in Sri Lanka or the Maldives who hold valid work or residence permits may also require additional processing time.
The Embassy has cautioned applicants that it reserves the right to request additional documents or information when necessary. Applicants may also be asked to attend a visa interview on a case-by-case basis.
The new requirement represents a significant change for Sri Lankan travellers, who will need to complete the visa process before travelling to Thailand from September 15 onward.
The Embassy has urged applicants to rely only on its official communication channels for the latest visa requirements, procedures and updates.
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