Coating satellites with super-dark Vantablack paint could help fight light pollution crisis
When you buy through links on our articles, Future and its syndication partners may earn a commission.
A new type of super-black, highly resistant satellite paint promises an affordable fix to the satellite light pollution problem that has marred astronomical research since the recent advent of low-Earth-orbit megaconstellations.
One of these, the internet-beaming Starlink constellation, has been a matter of controversy since the launch of the first batch of its satellites in 2019. The constellation's thousands of spacecraft orbit so low that the sunlight they reflect outshines many stars from our perspective on Earth. And while the sight of a Starlink satellite train might thrill skywatchers, it's a true nightmare to astronomers worldwide.
When the $1.9 billion Vera Rubin Observatory opens its telescopic eyes to the sky later this month, astronomers expect that up to 40% of its images will be degraded or completely ruined by satellite streaks. It's a costly problem that will only become more serious as the number of satellites in orbit is expected to grow to tens of thousands within the next few years. But a new paint being developed in conjunction with astronomers might help. The paint, called Vantablack 310, could reduce the amount of light reflected by satellites in orbit down to just 2% of what is reflected by uncoated satellites, virtually erasing the pesky streaks from telescope images.
According to Noelia Noël, an astrophysicist at the University of Surrey, these satellite streaks will significantly reduce the scientific return on investment that the taxpayer-funded Vera Rubin telescope represents. Noël, who is expected to take part in Rubin's ten-year mission to map the sky in unprecedented detail, has been concerned about the loss of the pristine dark sky for years.
A native of Argentina, Noël grew up in awe of the star-studded southern sky and has been painfully aware of its deterioration. Those concerns led her to establishing a partnership with a University of Surrey spin-off, Surrey NanoSystems, who has been developing ultra black coatings for scientific instruments on satellites. The partnership has now produced a new type of blacker-than-black space paint, which reflects less light than available alternatives and can be easily applied by satellite makers in their clean rooms.
"Over the past five years, humankind has launched more satellites into space than it has done over the previous 60 years," Noël told Space.com. "It's a real problem for astronomy, especially for telescopes like Vera Rubin, which had to significantly change its observing strategy to avoid satellite clusters. So, I wanted to do something about it."
Surrey NanoSystems' previous coatings, although exquisite at reflecting light (the flagship Vantablack High Performance coating absorbs 99.9% of incoming sunrays), were based on delicate nanotechnology that required a technically complicated application process. Once applied, the coating couldn't be touched by a human hand or it would lose its anti-reflective properties.
"The previous coating was based on a carbon nanotube structure that can't be touched because it would collapse," Kieran Clifford, a materials scientist at Surrey NanoSystems, told Space.com. "We needed something that can be easily handled by engineers at their own facilities."
The new coating is based on a proprietary blend of carbon black, a soot-like form of carbon, mixed with special binders that make the paint resistant against the harsh conditions in near-Earth space. In tests, the new coating outperformed other similar paints currently on the market not just in terms of its light absorption ability but also durability in space, Clifford said.
"We conducted tests that simulated three years in orbit and our coating withstood it with negligible changes whereas other types of space paints completely eroded," said Clifford. "Our coating also offers a better optical performance. Where competitor coatings reflect about 5% of the incoming light, the Vantablack 310 coating only reflects 2% of the light across the visible and near infrared spectrum."
SpaceX has previously experimented with dark paint to reduce the brightness of its satellites, but those experiments provided mixed results. In some cases, the satellites began to overheat due to the amount of absorbed light. The new paint should not cause such problems, Clifford believes, and will make the satellites much less visible than the current Starlinks.
"We know from some simulations that we have done that our coating should make satellites invisible to the naked eye," Clifford said. "That's about magnitude 7 in terms of brightness while Starlink satellites range from magnitude 3 to magnitude 5."
Magnitude is a measure of luminosity of astronomical objects, which is inverse to the object's actual brightness. The lower the magnitude number, the brighter the object is. The magnitude scale is logarithmic, meaning the observed brightness increases exponentially with the decreasing magnitude number.
Surrey NanoSystems and the University of Surrey will test the Vantablack 310 coating in space on the student satellite Jovian 1, which will carry a range of payloads built by British universities to low Earth orbit next year.
"The rear of the satellite's deployable solar panel will be coated with Vantablack 310, and we will be rotating the satellite while making ground-based measurements to observe the changes in brightness," Clifford said.
The company is already in talks with satellite manufacturers. They hope that the ease of the paint's application, its exquisite durability and ability to reduce brightness will inspire them to use it on their satellites in the future.
"I don't want to be too optimistic, but I hope that with this new solution, we might be able to inspire some policy changes," Noël said. "Satellites are an amazing technology, but we also want to make sure that the sky remains accessible to everyone. Large telescopes represent a huge investment, and we want to make sure that it doesn't go to waste."
Hashtags
Try Our AI Features
Explore what Daily8 AI can do for you:
Comments
No comments yet...
Related Articles
Yahoo
8 hours ago
- Yahoo
Just 1 dose of magic mushroom compound eases depression for at least 5 years in most patients, small study suggests
When you buy through links on our articles, Future and its syndication partners may earn a commission. DENVER—Psilocybin, the main psychoactive ingredient in magic mushrooms, can alleviate depression for at least five years after a single dose, a new study finds. The research, presented June 18 at the Psychedelic Science 2025 conference in Denver, focused on patients with major depressive disorder (MDD), which is often called clinical depression. The serious mood disorder causes a persistent feeling of sadness and a loss of interest or pleasure in activities that were once enjoyable. The most common treatments for MDD include talk therapy and medications such as selective serotonin reuptake inhibitors, and both can take a long time to show any benefits. When early studies hinted at psilocybin's potential as an antidepressant, a team of researchers undertook the first-ever randomized clinical trial to explore the use of the psychedelic for treating severe depression. The trial included 24 patients, half of whom received psilocybin at the very start of the trial and half of whom received the same dose eight weeks later—the "waitlist" group. Each patient also received 11 hours of psychotherapy. Even in that short time frame, "there was a significant reduction in depression in the immediate-treatment group compared to those on the waitlist," study co-author Alan Davis, director of the Center for Psychedelic Drug Research and Education at The Ohio State University, told Live Science. Once all of the patients had completed the four-week study, the psilocybin appeared to be four times more effective than traditional antidepressant medications, based on previous research data. One month after the treatment, 17 patients had relieved symptoms, including 14 who were in full remission from depression. Patients also responded much faster to psilocybin than is typical for conventional antidepressants. But do these benefits of psilocybin last? Related: Magic mushrooms temporarily 'dissolve' brain network responsible for sense of self Very few long-term studies of psilocybin for depression have been conducted to date, said Dr. Charles Raison, a professor of human ecology and psychiatry at the University of Wisconsin-Madison who was not involved in the research. "They are very difficult to do because people drop out," Raison told Live Science in an email. "But also because they go on all sorts of other treatments that obfuscate the degree to which any longer lasting benefits result from the psychedelic or because the participant got therapy or restarted an antidepressant." To investigate whether the benefits for psilocybin lasted and if the patients had experienced any side effects, the researchers contacted the original trial participants several years later to request their enrollment in a follow-up study. Twenty-one patients enrolled, and their clinicians rated any changes in the participants' levels of depression from before the original treatment to the present day. The patients also filled out a series of self-reported, online questionnaires and met up with clinicians to document their ability to engage in everyday tasks, their levels of anxiety and their general mental health. The researchers assumed that the three patients that didn't sign up for the follow up, and the three that didn't complete the questionnaires had not remained in remission. Even so, the researchers found that 67% of the participants who had suffered from depression half a decade earlier remained in remission after a single psychedelic therapy session. These patients also reported less anxiety and less difficulty functioning on a daily basis. In general, the two-thirds of the patients who responded well reported lasting positive changes in their mindsets, emotional health and relationships. "I'm excited by these deeper aspects of their lives that really speaks to the importance of these interventions beyond just reduction of depression," Davis said. RELATED STORIES —Psychedelics rapidly change the brain. Here's how. —Australia clears legal use of MDMA and psilocybin to treat PTSD and depression —'Magic mushroom' treatment for depression inches closer to approval Most of the patients shared that, following the original treatment, they'd engaged in self-reflection and therapy to help understand themselves and navigate life's challenges. Davis hypothesizes that the psychedelic experience catalyzes a deeper therapy process and would like to conduct future studies comparing the relative influences of psilocybin and psychotherapy in alleviating depression. "The biggest caveat of this study is the small sample size, and the fact that the original trial showed larger antidepressant effects than subsequent larger multi-site studies seem to be showing," Raison said. In a multi-site clinical trial with 233 participants, 37% of the 79 who received a single 25 mg dose of psilocybin, coupled with psychotherapy, went into remission from major depression. While these trials report less widespread antidepressant effects, they support the idea that psilocybin can effectively treat depression, Davis said, and he is keen to see how the findings of multi-site trials hold up five years post-treatment.
Yahoo
8 hours ago
- Yahoo
Vera C. Rubin debut images: How to see the groundbreaking space photos from the world's largest camera
When you buy through links on our articles, Future and its syndication partners may earn a commission. The new Vera C. Rubin Observatory is set to release its debut images — taken with the largest digital camera ever built — on Monday (Jun. 23). The world-first images and videos will be ultra-high-definition and will show off the observatory's highly anticipated, cutting-edge capabilities for the first time. Here's what you need to know. If you want to watch from home, a news conference will be streaming on YouTube in English and Spanish at 11:00 a.m. EDT on Monday. The link to watch is posted on the observatory's website, and is also embedded here. If you'd prefer to bask in the awe of the cosmos with friends, you may be able to attend a watch party near you — or even host one of your own. Groups will gather across the globe in planetariums and universities to admire the highly detailed images and videos as they are released. The observatory has shared links to a map of all registered watch parties, as well as a link to sign up to become a host. During the news conference, the observatory team will introduce the Rubin Observatory before showcasing the new images and discussing their significance. Watch parties may also hear from local scientists and special guests. Be sure to check out the details of a watch party before you attend to learn about any extra programming. The observatory, perched high on a mountain in the Chilean Andes, will peer at interstellar comets and dangerous asteroids, as well as larger objects, like twisting galaxies and exploding supernovas. Related: 'People thought this couldn't be done': Scientists observe light of 'cosmic dawn' with a telescope on Earth for the first time ever Inside Rubin lies the world's largest digital camera and six of the largest optical filters ever produced. Together, they allow researchers to observe different facets of the universe in many wavelengths of light and remarkably high detail. The camera will take a new high-resolution photo of the sky around every 40 seconds. The images will then be transmitted via fiber optic cables to a supercomputer in California, which will analyze the photos. When stitched together, the images can act as a time-lapse video of space, one that is planned to span 10 years. RELATED STORIES —Space photo of the week: Observatory, or alien planet? Boggle your mind with this 360-degree image —Vera C. Rubin Observatory: The groundbreaking mission to make a 10-year, time-lapse movie of the universe —3,200-megapixel camera of the future Vera Rubin Observatory snaps record-breaking 1st photos Using its groundbreaking instruments, the observatory is expected to contribute to current understanding of widely debated phenomena, including dark energy and dark matter — two components that are thought to make up a vast majority of the universe, but remain poorly understood. The new images could be the first of many that vastly improve our understanding of the cosmos. Whether you join a watch party or tune in from the comfort of your couch, these photos are not to be missed.
Yahoo
8 hours ago
- Yahoo
Hurricanes and sandstorms can be forecast 5,000 times faster thanks to new Microsoft AI model
When you buy through links on our articles, Future and its syndication partners may earn a commission. A new artificial intelligence (AI) model can predict major weather events faster and more accurately than some of the world's most widely used forecasting systems. The model, called Aurora, is trained on more than 1 million hours of global atmospheric data, including weather station readings, satellite images and radar measurements. Scientists at Microsoft say it's likely the largest dataset ever used to train a weather AI model. Aurora correctly forecast that Typhoon Doksuri would strike the northern Philippines four days before the storm made landfall in July 2023. At the time, official forecasts placed the storm's landfall over Taiwan — several hundred miles away. It also outperformed standard forecasting tools used by agencies, including the U.S. National Hurricane Center and the Joint Typhoon Warning Center. It delivered more accurate five-day storm tracks and produced high-resolution forecasts up to 5,000 times faster than conventional weather models powered by supercomputers. More broadly, Aurora beat existing systems in predicting weather conditions over a 14-day period in 91% of cases, the scientists said. They published their findings May 21 in the journal Nature. Researchers hope Aurora and models like it could support a new approach to predicting environmental conditions called Earth system forecasting, where a single AI model simulates weather, air quality and ocean conditions together. This could help produce faster and more consistent forecasts, especially in places that lack access to high-end computing or comprehensive monitoring infrastructure. Related: Google builds an AI model that can predict future weather catastrophes Aurora belongs to a class of large-scale AI systems known as foundation models — the same category of AI models that power tools like ChatGPT. Foundation models can be adapted to different tasks because they're designed to learn general patterns and relationships from large volumes of training data, rather than being built for a single, fixed task. In Aurora's case, the model learns to generate forecasts in a matter of seconds by analyzing weather patterns from sources like satellites, radar and weather stations, as well as simulated forecasts, the researchers said. The model can then be fine-tuned for a wide range of scenarios with relatively little extra data — unlike traditional forecasting models, which are typically built for narrow, task-specific purposes and often need retraining to adapt. The diverse dataset Aurora is trained on not only results in greater accuracy in general versus conventional methods, but also means the model is better at forecasting extreme events, researchers said. Related stories —Google's DeepMind AI can make better weather forecasts than supercomputers —Is climate change making the weather worse? —What is the Turing test? How the rise of generative AI may have broken the famous imitation game In one example, Aurora successfully predicted a major sandstorm in Iraq in 2022, despite having limited air quality data. It also outperformed wave simulation models at forecasting ocean swell height and direction in 86% of tests, showing it could extract useful patterns from complex data even when specific inputs were missing or incomplete. "It's got the potential to have [a] huge impact because people can really fine tune it to whatever task is relevant to them … particularly in countries which are underserved by other weather forecasting capabilities," study co-author Megan Stanley, a senior researcher at Microsoft, said in a statement. Microsoft has made Aurora's code and training data publicly available for research and experimentation. The model has been integrated into services like MSN Weather, which itself is integrated into tools like the Windows Weather app and Microsoft's Bing search results.
