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SL scientist joins NASA’s simulated Mars mission at Johnson Space Center
Sri Lanka’s Piyumi Wijesekara is among the crew of four volunteers, selected by NASA, to participate in a simulated mission to Mars within a habitat at the agency’s Johnson Space Center in Houston.
Jason Lee, Stephanie Navarro, Shareef Al Romaithi, and Wijesekara will step into the agency’s Human Exploration Research Analog, or HERA, on Friday, 10 May. Once inside, the team will live and work like astronauts for 45 days. The crew will exit the facility on June 24 after they “return” to Earth. Jose Baca and Brandon Kent are this mission’s alternate crew members.
HERA enables scientists to study how crew members adapt to isolation, confinement, and remote conditions before NASA sends astronauts on deep space missions to the Moon, Mars, and beyond. Crew members will carry out scientific research and operational tasks throughout their simulated mission to the Red Planet, including a “walk” on Mars’s surface using virtual reality. They will also experience increasing communication delays lasting up to five minutes each way with Mission Control Center as they “near” Mars.
This crew is the second group of volunteers to participate in a simulated Mars mission in HERA this year. The most recent crew completed its HERA mission on March 18. Two other missions will follow this year, with the final HERA crew slated to wrap up on Dec. 20.
In a first for HERA, one crew member, Shareef Al Romaithi, hails from the United Arab Emirates (UAE) and will participate in the mission through a partnership between NASA and the UAE’s Mohammed Bin Rashid Space Centre (MBRSC).
As with the previous HERA mission this year, NASA’s Human Research Program is conducting 18 human health studies during the mission. The experiments will evaluate the physiological, behavioral, and psychological responses of crew members in an environment similar to what astronauts will face on a trip to Mars. Seven of these studies are collaborations with the MBRSC and the European Space Agency (ESA). Insights gleaned from the studies will allow researchers to develop and test strategies aimed at helping astronauts overcome obstacles on long missions deep into space.
Wijesekara is a postdoctoral research scientist in the Radiation Biophysics Laboratory at NASA Ames Research Center in California’s Silicon Valley. Her research focuses on developing tissue models to investigate the effects of spaceflight stressors, including ionizing radiation and lunar dust on the human respiratory system.
Wijesekara earned her bachelor’s degree in bioengineering from the University of California, San Diego, and her master’s and doctorate degrees in biomedical engineering from Carnegie Mellon University in Pittsburgh, Penn. Her doctoral research focused on stem cell and organ engineering, with an emphasis on engineering lung models that mimic human lung physiology, to study respiratory diseases.
News
Health authorities on high alert over Nipah Virus threat
Sri Lanka has stepped up efforts to detect and respond to a potential outbreak of the deadly Nipah virus (NiV), with health authorities enhancing surveillance and laboratory readiness amid growing concerns in the region.
The Medical Research Institute (MRI), the country’s premier laboratory, has upgraded its testing capacity with the latest technology to identify the Nipah virus, enabling early detection of suspected cases, an MRI source said.
Nipah virus is a highly infectious zoonotic disease that can spread from animals
to humans and also through human-to-human contact. Fruit bats are the natural hosts of the virus.
First identified in Malaysia in 1988, the virus has since caused deadly outbreaks in countries including India and Bangladesh. Experts warn that Sri Lanka, with its close human-animal interactions and tropical climate, must remain vigilant against such emerging infectious diseases.
The case fatality rate of Nipah virus ranges from 40% to 75%, making it one of the most lethal viral infections affecting humans. There are currently no specific drugs or vaccines, with treatment relying mainly on intensive supportive care, health specialists say.
Symptoms of infection initially include fever, headaches, muscle pain, vomiting, and sore throat, followed by dizziness, drowsiness, altered consciousness, and neurological signs indicating acute encephalitis. Severe cases may progress to atypical pneumonia, acute respiratory distress, seizures, and coma within 24 to 48 hours.Authorities continue to urge heightened awareness and precautionary measures, emphasizing that early detection and rapid response are key to preventing outbreaks.
by Chaminda Silva ✍️
News
Free Media Movement demands govt. accountability on free speech issues
The Free Media Movement (FMM) has demanded government accountability on many freedom of expression issues referred to in a statement issued by the Human Rights Commission in a statement issued last week.
The statement under the hands of FMM Convener Lasantha De Silva and Secretary Dileesha Abeysundera says FMM has paid close attention to the statement issued by the Human Rights Commission (HRC) under reference number HRC/S/i/E/03/02/26. It has also informed that global stakeholders, including the International Federation of Journalists—of which it is a member—that are already closely monitoring this matter.
In its statement, HRC has elaborated at length on the issues that have arisen in Sri Lanka concerning freedom of expression and online safety. It specifically points out that the actions of the Sri Lanka Police have been a major contributing factor to these concerns. The Commission notes that recent conduct of the police has indirectly interfered even with the professional activities of journalists.
HRC has also drawn attention to the practice of summoning journalists and other activists before the police without providing clear reasons, in violation of circulars issued by the IGP. In certain instances, the police have stated that journalists were summoned due to alleged defamation arising from media activities.
However, freedom of expression guaranteed by the Constitution is restricted only within constitutionally prescribed limits. Accordingly, defamation that is no longer a criminal offence cannot be acted upon by the police. Such matters constitute civil offences that must be resolved before courts of law. The Commission further observes that attempts by politicians and others to lodge complaints with the Criminal Investigation Department regarding defamation are efforts to portray defamation as a criminal offence.
The HRC statement also addresses the Online Safety Act. While emphasizing the need to be mindful of online safety, the Commission points out that the current law does not address genuine needs. Therefore, as already demanded by many stakeholders, the government has the option to repeal this Act.
In addition, HRC has outlined a three-pronged approach that should be adopted to safeguard freedom of expression, as guaranteed by the Constitution and in line with Sri Lanka’s commitments under the Universal Declaration of Human Rights of the United Nations.
FMM said it is of the view that the Government of Sri Lanka must give serious consideration to this statement and to the recommendations emphasized therein. “This is a moment in which the accountability of the Sri Lankan government is being questioned. Accordingly, the Free Media Movement urges the government to take immediate steps to implement the recommendations set out in this statement,” it said.
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Opposition alleges Govt deliberately delaying PC polls
ITAK Batticaloa District MP Shanakiyan Rasamanickam accused the government in Parliament on Friday of deliberately delaying Provincial Council elections, pointing to its failure to nominate members to a Parliamentary Select Committee.
The committee, tasked with considering matters related to Provincial Council polls, was announced on 6 January 2026. Opposition parties submitted their nominees promptly.
However, a month later, the government has yet to name its eight members, preventing the committee from being constituted and from commencing its work, Rasamanickam alleged.
Opposition representatives argue that this delay represents intentional inaction aimed at postponing elections. They urged the government to appoint its nominees without further delay to allow the committee to proceed.
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