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Toronto Star
2 hours ago
- Toronto Star
Radar satellite launched by India and NASA will track miniscule changes to Earth's land and ice
CAPE CANAVERAL, Fla. (AP) — NASA and India paired up to launch an Earth-mapping satellite on Wednesday capable of tracking even the slightest shifts in land and ice. The $1.3 billion mission will help forecasters and first responders stay one step ahead of floods, landslides, volcanic eruptions and other disasters, according to scientists.
Winnipeg Free Press
2 hours ago
- Winnipeg Free Press
Radar satellite launched by India and NASA will track miniscule changes to Earth's land and ice
CAPE CANAVERAL, Fla. (AP) — NASA and India paired up to launch an Earth-mapping satellite on Wednesday capable of tracking even the slightest shifts in land and ice. The $1.3 billion mission will help forecasters and first responders stay one step ahead of floods, landslides, volcanic eruptions and other disasters, according to scientists. Rocketing to orbit from India, the satellite will survey virtually all of Earth's terrain multiple times. Its two radars — one from the U.S. and the other from India — will operate day and night, peering through clouds, rain and foliage to collect troves of data in extraordinary detail. Microwave signals beamed down to Earth from the dual radars will bounce back up to the satellite's super-sized antenna reflector perched at the end of a boom like a beach umbrella. Scientists will compare the incoming and outgoing signals as the spacecraft passes over the same locations twice every 12 days, teasing out changes as small as a fraction of an inch (1 centimeter). It's 'a first-of-its-kind, jewel radar satellite that will change the way we study our home planet and better predict a natural disaster before it strikes,' NASA's science mission chief Nicky Fox said ahead of liftoff. Fox led a small NASA delegation to India for the launch. It will take a full week to extend the satellite's 30-foot (9-meter) boom and open the 39-foot-in-diameter (12-meter) drum-shaped reflector made of gold-plated wire mesh. Science operations should begin by the end of October. Among the satellite's most pressing measurements: melting glaciers and polar ice sheets; shifting groundwater supplies; motion and stress of land surfaces prompting landslides and earthquakes; and forest and wetland disruptions boosting carbon dioxide and methane emissions. NASA is contributing $1.2 billion to the three-year mission; it supplied the low-frequency radar and reflector. The Indian Space Research Organization's $91 million share includes the higher-frequency radar and main satellite structure, as well as the launch from a barrier island in the Bay of Bengal. It's the biggest space collaboration between the two countries. The satellite called NISAR — short for NASA-ISRO Synthetic Aperture Radar — will operate from a near-polar-circling orbit 464 miles (747 kilometers) high. It will join dozens of Earth observation missions already in operation by the U.S. and India. ___ The Associated Press Health and Science Department receives support from the Howard Hughes Medical Institute's Department of Science Education and the Robert Wood Johnson Foundation. The AP is solely responsible for all content.
CBC
5 days ago
- CBC
Trump's NASA cuts will 'compromise human safety,' hundreds of employees say in letter
NASA scientists say pending cuts to the space agency could compromise mission safety and pave the way for another tragedy like the 1986 Challenger disaster. "When you're talking about cuts that appear unstrategic and unthoroughly researched and not motivated by actual improvements in mission safety, then you start to get people worried," Kyle Helson, a research scientist at the NASA Goddard Space Flight Center and the University of Maryland, told As It Happens guest host Megan Williams. Helson is one of 362 current and former NASA employees who have signed an open letter sounding the alarm about "recent policies that have or threaten to waste public resources, compromise human safety, weaken national security, and undermine the core NASA mission." In an email to CBC, NASA spokesperson Bethany Stevens dismissed those concerns. "NASA will never compromise on safety. Any reductions — including our current voluntary reduction — will be designed to protect safety-critical roles," she said. $6B US in proposed cuts U.S. President Donald Trump is seeking a 25 per cent, or roughly $6 billion US ($8.22 billion Cdn), budget cut for NASA as a whole, and 50 per cent cut for the scientific research division. "President Trump has proposed billions of dollars for NASA science, demonstrating an ongoing commitment to communicating our scientific achievements," Stevens said. Helson says that's technically true, but wildly disingenuous. "That's like saying your bicycle is missing one wheel, but don't worry, you've still got another wheel," he said. Trump's cuts have yet to be approved by Congress, which holds NASA's purse strings. But in leaked audio from a NASA town hall meeting last month, several high-ranking officials said they will be moving ahead with them anyway. Zoe Lofgren and Valerie P. Foushee, the top Democrats on a House committee overseeing NASA's budget, have said implementing the cuts prematurely would be "flatly illegal" and "offensive to our constitutional system." The bipartisan committee has called on NASA not to implement the cuts. Fears of reprisal The open letter, called The Voyager Declaration, is addressed to Secretary of Transportation Sean Duffy, who Trump appointed interim NASA administrator earlier this month. Duffy's office directed calls for comment to NASA. The declaration specifically cites concerns that, if NASA continues along this path, existing missions will be cancelled, valuable scientific data will be lost, international partners will be abandoned, development programs will be nixed, staffing will be gutted and safety measures will be scaled back. It follows similar open letters by workers at the National Institutes of Health (NIH) and the Environmental Protection Agency (EPA), the latter of which suspended 144 employees who signed. NASA workers fear a similar retribution. Roughly half of those who signed the letter did so anonymously, and only four signatories who currently work with NASA are willing to speak out on record, according to Stand Up For Science, the organization that helped organize this letter, and those at NIH and EPA. Helson is one of those four, and says he's only comfortable speaking because his work with NASA is in co-operation with the University of Maryland, Baltimore County, a position he says gives him more academic freedom than those employed directly by NASA. "A lot of my coworkers who are civil servants are very afraid right now, and so I want to use what I perceive to be my advantages in my position to speak out on their behalf," he said. "People are afraid that they're going to lose their job." NASA did not respond to questions from CBC about whether it would retaliate against the letter's signatories. The letter is framed an act of "Formal Dissent," a reference to a NASA policy that empowers employees to speak up against decisions they believe are "not in the best interest of NASA." According to the New York Times, the policy was put in place after the deadly 1986 Challenger and 2003 Columbia space shuttle disasters, when the concerns of some engineers were brushed aside. The Challenger broke up seconds into its flight on Jan. 28, 1986, killing all seven astronauts on board. The Columbia disintegrated upon re-entry on Feb. 1, 2003, killing its crew of seven. The letter's signatories say they're worried that other policies designed to prevent those kinds of tragedies will be impacted by the cuts. "The culture of organizational silence promoted at NASA over the last six months already represents a dangerous turn away from the lessons learned following the Columbia disaster," the letter reads.
