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Milky Way may be visible during July 4 weekend: When, how to see our galaxy from Florida

Milky Way may be visible during July 4 weekend: When, how to see our galaxy from Florida

Yahoo01-07-2025
Looking for an alternative to fireworks? Stargazers have the opportunity to catch a cosmic light show this Independence Day when the Milky Way appears in the night sky.
The center of our home galaxy, which is composed of billions of stars, is expected to be bright and vibrant throughout the month ahead, including the July Fourth weekend. Astronomers say this is perhaps the best time of year to glimpse the iconic band of hazy light known as the Milky Way as it arcs across the sky.
The best part? You don't need any fancy telescopes or equipment to view it; just your eyes – and maybe a camera, if you're into astral photography.
Milky Way photos: See images of our galaxy making itself visible around the globe
Here's everything to know about our Milky Way, including how to see the stunning natural phenomenon.
The Milky Way is our home galaxy with a disc of stars that spans more than 100,000 light-years. Because it appears as a rotating disc curving out from a dense central region, the Milky Way is known as a spiral galaxy.
Our planet is located along one of the galaxy's spiral arms, about halfway from the center, according to NASA.
The Milky Way sits in a cosmic neighborhood called the Local Group that includes more than 50 other galaxies. Those galaxies can be as small as a dwarf galaxy with up to only a few billion stars, or as large as Andromeda, our nearest large galactic neighbor.
The Milky Way got its name because from our perspective on Earth, it appears as a faint, milky band of light stretching across the entire sky.
While the Milky Way is generally always visible from Earth, certain times of year are better for stargazers to catch a glimpse of the band of billions of stars comprising our galaxy.
"Milky Way season," when the galaxy's bright center becomes easier to see from Earth, typically runs from February to October, according to Milky Way photography website Capture the Atlas.
But because visibility from Earth depends on the latitude, the further south you go, the longer the Milky Way season will last.
For instance, southern states like Florida could have great views of the Milky Way from March to September, according to Capture the Atlas. Northern states in higher latitudes, though, may only have Milky Way sightings through late August.
What you're looking at when the Milky Way is visible is the bright center of our galaxy, "seen edge-on from our position within the galaxy's disk," Preston Dyches, who hosts NASA's "What's Up," a monthly video series that describes what's happening in the night sky, wrote for NASA.
The center of the Milky Way, which Dyches refers to as "the core," became visible in June, and is expected to shine every night through August as it gets higher in a darker sky.
Typically, the sky is darkest between sunset and sunrise, or about midnight and 5 a.m., according to Capture the Atlas. You can check the sunrise and sunset times at your location using the website TimeAndDate.
"This doesn't mean that as soon as the sun goes down, you can see the Milky Way," writes Dan Zafra, co-founder of Capture the Atlas. "Even if it's in the sky, the Milky Way will be barely visible during blue hour, so you'll have to wait at least until the end of the astronomical twilight to see all the details of the Milky Way."
Stargazers can observe the Milky Way galaxy by looking for the Summer Triangle, a shape formed by "three bright stars" that spans across the Milky Way, according to science news website LiveScience.
In the Northern Hemisphere, the Milky Way rises in the southeast, travels across the southern sky and sets in the southwest, according to Weather.com.
Spectators will have the best luck on cloud-free nights and in locations away from city light pollution – including *ahem* fireworks. DarkSky International maintains a website that lists all designated dark sky communities around the world, including 159 locations in the U.S.
Eric Lagatta is the Space Connect reporter for the USA TODAY Network. Reach him at elagatta@gannett.com
This article originally appeared on Florida Today: Could Milky Way be visible from Florida? When to see galaxy in July
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The asteroid that will spare Earth might hit the moon instead. What happens if it does?
The asteroid that will spare Earth might hit the moon instead. What happens if it does?

Yahoo

time19 minutes ago

  • Yahoo

The asteroid that will spare Earth might hit the moon instead. What happens if it does?

The asteroid known as 2024 YR4 is out of sight yet still very much on scientists' minds. The building-sized object, which initially appeared to be on a potential collision course with Earth, is currently zooming beyond the reach of telescopes on its orbit around the sun. But as scientists wait for it to reappear, its revised trajectory is now drawing attention to another possible target: the moon. Discovered at the end of 2024, the space rock looked at first as if it might hit our planet by December 22, 2032. The chance of that impact changed with every new observation, peaking at 3.1% in February — odds that made it the riskiest asteroid ever observed. Ground- and space-based telescope observations were crucial in helping astronomers narrow in on 2024 YR4's size and orbit. With more precise measurements, researchers were ultimately able to rule out an Earth impact. The latest observations of the asteroid in early June, before YR4 disappeared from view, have improved astronomers' knowledge of where it will be in seven years by almost 20%, according to NASA. That data shows that even with Earth avoiding direct impact, YR4 could still pose a threat in late 2032 by slamming into the moon. The impact would be a once-in-a-lifetime event for humanity to witness — but it could also send fine-grained lunar material hurtling toward our planet. While Earth wouldn't face any significant physical danger should the asteroid strike the moon, there is a chance that any astronauts or infrastructure on the lunar surface at that time could be at risk — as could satellites orbiting our planet that we depend on to keep vital aspects of life, including navigation and communications, running smoothly. Any missions in low-Earth orbit could also be in the pathway of the debris, though the International Space Station is scheduled to be deorbited before any potential impact. Initially, YR4 was seen as a case study in why scientists do the crucial work of planetary defense, discovering and tracking asteroids to determine which ones have a chance of colliding with Earth. Now, astronomers say this one asteroid could redefine the range of risks the field addresses, expanding the purview of the work to include monitoring asteroids that might be headed for the moon as well. 'We're starting to realize that maybe we need to extend that shield a little bit further,' said Dr. Paul Wiegert, a professor of astronomy and physics at the Western University in London, Ontario. 'We now have things worth protecting that are a bit further away from Earth, so our vision is hopefully expanding a little bit to encompass that.' In the meantime, researchers are assessing just how much chaos a potential YR4 lunar impact could create — and whether anything can be done to mitigate it. 'City killer' on the moon The threatening hunk of rock appears as just a speck of light through even the strongest astronomical tools. In reality, YR4 is likely about 60 meters (about 200 feet) in diameter, according to observations in March by the James Webb Space Telescope, the most powerful space-based observatory in operation. 'Size equals energy,' said Julien de Wit, associate professor of planetary sciences at the Massachusetts Institute of Technology, who observed YR4 with Webb. 'Knowing YR4's size helped us understand how big of an explosion it could be.' Astronomers believe they have found most of the near-Earth asteroids the field would classify as 'planet killers' — space rocks that are 1 kilometer (0.6 mile) across or larger and could be civilization-ending, said Dr. Andy Rivkin, planetary astronomer from the Johns Hopkins University's Applied Physics Laboratory in Maryland. The planet killer that slammed into Earth 66 million years ago and led to the extinction of dinosaurs was estimated to be roughly 6 miles (about 10 kilometers) in diameter. Smaller asteroids such as YR4, which was colloquially dubbed a 'city killer' after its discovery, could cause regional devastation if they collide with our planet. About 40% of near-Earth space rocks larger than 140 meters (460 feet) but smaller than a kilometer — capable of more widespread destruction — have been identified, according to NASA. But astronomers have never really had a chance to watch a collision of that size occur on the moon in real time, Wiegert said. The latest glimpses of YR4 on June 3 before it passed out of view revealed a 4.3% chance of a YR4 lunar impact — small but decent enough odds for scientists to consider how such a scenario might play out. A striking meteor shower — and a risk Initial calculations suggest the impact has the largest chance of occurring on the near side of the moon — the side we can see from Earth. 'YR4 is so faint and small we were able to measure its position with JWST longer than we were able to do it from the ground,' said Rivkin, who has been leading the Webb study of YR4. 'And that lets us calculate a much more precise orbit for it, so we now have a much better idea of where it will be and won't be.' The collision could create a bright flash that would be visible with the naked eye for several seconds, according to Wiegert, lead author of a recent paper submitted to the American Astronomical Society journals analyzing the potential lunar impact. The collision could create an impact crater on the moon estimated at 1 kilometer wide (0.6 miles wide), Wiegert said — about the size of Meteor Crater in Arizona, Rivkin added. It would be the largest impact on the moon in 5,000 years and could release up to 100 million kilograms (220 million pounds) of lunar rocks and dust, according to the modeling in Wiegert's study. Even pieces of debris that are just tens of centimeters in size could present a hazard for any astronauts who may be present on the moon, or any structures they have built for research and habitation, Wiegert said. The moon has no atmosphere, so the debris from the event could be widespread on the lunar surface, he added. On average, the moon is 238,855 miles (384,400 kilometers) away from Earth, according to NASA. Particles the size of large sand grains, ranging from 0.1 to 10 millimeters in size, of lunar material could reach Earth between a few days and a few months after the asteroid strike because they'll be traveling incredibly fast, creating an intense, eye-catching meteor shower, Wiegert said. 'There's absolutely no danger to anyone on the surface,' Wiegert said. 'We're not expecting large boulders or anything larger than maybe a sugar cube, and our atmosphere will protect us very nicely from that. But they're traveling faster than a speeding bullet, so if they were to hit a satellite, that could cause some damage.' Not all lunar debris that reaches the Earth is so small, and it depends on the angle and type of impact to the moon, according to Washington University in St. Louis. Space rocks slamming into the lunar surface over millions of years have resulted in various sizes of lunar meteorites found on Earth. Preparing for impact Hundreds to thousands of impacts from millimeter-size debris could affect Earth's satellite fleet, meaning satellites could experience up to 10 years' equivalent of meteor debris exposure in a few days, Wiegert said. Humankind depends on vital space infrastructure, said Dan Oltrogge, chief scientist at COMSPOC, a space situational awareness software company that develops solutions for handling hazards such as space debris. 'Space touches almost every aspect of our lives today, ranging from commerce, communications, travel, industry, education, and social media, so a loss of access to and effective use of space presents a serious risk to humanity,' Oltrogge said. The event is unlikely to trigger a Kessler Syndrome scenario in which debris from broken satellites would collide with others to create a domino effect or fall to Earth. Instead, it might be more akin to when a piece of gravel strikes a car windshield at high speed, meaning solar panels or other delicate satellite parts might be damaged, but the satellite will remain in one piece, Wiegert said. While a temporary loss of communication and navigation from satellites would create widespread difficulties on Earth, Wiegert said he believes the potential impact is something for satellite operators, rather than the public, to worry about. Protecting Earth and the moon Scientists and astronomers around the world are thinking about the possible scenarios since they could not rule out a lunar impact before YR4 disappeared from view, Wiegert said. 'We realize that an impact to the moon could be consequential, so what would we do?' de Wit said. A potential planetary defense plan might be clearer if the asteroid were headed straight for Earth. Rivkin helped test one approach in September 2022 as the principal investigator of NASA's Double Asteroid Redirection Test, or DART, which intentionally slammed a spacecraft into the asteroid Dimorphos in September 2022. Dimorphos is a moonlet asteroid that orbits a larger parent asteroid known as Didymos. Neither poses a threat to Earth, but the double-asteroid system was a perfect target to test deflection technology because Dimorphos' size is comparable to asteroids that could harm our planet in the event of an impact. The DART mission crashed a spacecraft into the asteroid at 13,645 miles per hour (6 kilometers per second) to find out whether such a kinetic impact would be enough to change the motion of a celestial object in space. It worked. Since the day of the collision, data from ground-based telescopes has revealed that the DART spacecraft did alter Dimorphos' orbital period — or how long it takes to make a single revolution around Didymos — by about 32 or 33 minutes. And scientists have continued to observe additional changes to the pair, including how the direct hit likely deformed Dimorphos due to the asteroid's composition. Similarly, if YR4 strikes the moon and doesn't result in damaging effects for satellites, it could create a tremendous opportunity for researchers to learn how the lunar surface responds to impacts, Wiegert said. But whether it would make sense to send a DART-like mission to knock YR4 off a collision course with the moon remains to be seen. It will depend on future risk assessments by planetary defense groups when the asteroid comes back into view around 2028, de Wit said. Though defense plans for a potential moon impact still aren't clear, YR4's journey underscores the importance — and the challenges — of tracking objects that are often impossible to see. Hidden threats YR4 was detected by the Asteroid Terrestrial-impact Last Alert System, or ATLAS telescope, in Río Hurtado, Chile, two days after the asteroid had already made its closest pass by Earth, hidden by the bright glare of the sun as it approached our planet. The same thing occurred when an asteroid measuring roughly 20 meters (about 65 feet) across hit the atmosphere and exploded above Chelyabinsk, Russia, on February 15, 2013, damaging thousands of buildings, according to the European Space Agency. While no one died, about 1,500 people were injured when the windows in homes and businesses blew out due to the shock wave. Trying to observe asteroids is challenging for many reasons, Rivkin said. Asteroids are incredibly faint and hard to see because rather than emitting their own light, they only reflect sunlight. And because of their relatively tiny size, interpreting observations is not a clear-cut process like looking through a telescope at a planet such as Mars or Jupiter. 'For asteroids, we only see them as a point of light, and so by measuring how bright they are and measuring their temperature, basically we can get a size based on how big do they have to be in order to be this bright,' Rivkin said. For decades, astronomers have had to search for faint asteroids by night, which means missing any that may be on a path coming from the direction of the sun — creating the world's biggest blind spot for ground-based telescopes that can't block out our star's luminosity. But upcoming telescopes — including NASA's NEO Surveyor expected to launch by the end of 2027 and the European Space Agency's Near-Earth Object Mission in the InfraRed, or NEOMIR satellite, set for liftoff in the early 2030s — could shrink that blind spot, helping researchers detect asteroids much closer to the sun. 'NEOMIR would have detected asteroid 2024 YR4 about a month earlier than ground-based telescopes did,' said Richard Moissl, head of ESA's Planetary Defence Office, in a statement. 'This would have given astronomers more time to study the asteroid's trajectory and allowed them to much sooner rule out any chance of Earth impact in 2032.' NASA and other space agencies are constantly on the lookout for potentially hazardous asteroids, defined as such based on their distance from Earth and ability to cause significant damage should an impact occur. Asteroids that can't get any closer to our planet than one-twentieth of Earth's distance from the sun are not considered to be potentially hazardous asteroids, according to NASA. When the new Vera C. Rubin Observatory, located in the Andes in Chile, released its first stunning images of the cosmos in June, researchers revealed the discovery of more than 2,100 previously unknown asteroids after seven nights of those newly detected space rocks, seven were near-Earth objects. A near-Earth object is an asteroid or comet on an orbit that brings it within 120 million miles (about 190 million kilometers) of the sun, which means it has the potential to pass near Earth, according to NASA. None of the new ones detected by Rubin were determined to pose a threat to our planet. Rubin will act as a great asteroid hunter, de Wit said, while telescopes such as Webb could be a tracker that follow up on Rubin's discoveries. A proposal by Rivkin and de Wit to use Webb to observe YR4 in the spring of 2026 has just been approved. Webb is the only telescope with a chance of glimpsing the asteroid before 2028. 'This newly approved program will buy decision makers two extra years to prepare — though most likely to relax, as there is an 80% chance of ruling out impact — while providing key experience-based lessons for handling future potential impactors to be discovered by Vera Rubin,' de Wit said. And because of the twists and turns of YR4's tale thus far, asteroids that have potential to affect the moon could become objects of even more intense study in the future. 'If this really is a thing that we only have to worry about every 5,000 years or something, then maybe that's less pressing,' Rivkin said. 'But even just asking what would we do if we did see something that was going to hit the moon is at least something that we can now start thinking about.' Sign up for CNN's Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more. Solve the daily Crossword

Building a greener, smarter future
Building a greener, smarter future

Business Journals

time2 hours ago

  • Business Journals

Building a greener, smarter future

San Leandro's Gate510 campus has quickly become a hub for companies shaping the future of multiple industries. Air Protein, Coreshell and Lyten are among the innovators leveraging the infrastructure and support for makers in San Leandro. Read on to discover how they're redefining what's possible. AIR PROTEIN NASA-inspired research drives sustainable food production A food production facility that once made such American breakfast innovations as Eggo Waffles and Pop-Tarts is aiming to change the way we eat once again, this time with a sustainable twist. Air Protein opened its first Air Protein Farm on San Leandro's Gate510 campus in 2023, where it does just what its name suggests: make high-quality protein out of particles in the air. Co-founders Lisa Dyson and John Reed were inspired by research from the early days of NASA, which explored ways astronauts could produce food on long space journeys. They built on that work, creating a method for growing protein in cultures, similar to the production of yogurt, cheese, and wine. The result is a neutral-tasting protein flour that can be turned into or used in any food. 'We and our investors believe we've cracked the code on making functional ingredients that have a great cost profile,' Dyson said. 'Many companies are also looking for ingredients that are resource-efficient, and that's what we do. We help CPG [Consumer Packaged Goods] companies make great products for consumers.' In choosing San Leandro, Air Protein put the company's headquarters in a location with a history of food manufacturing. Dyson said the Air Protein project team and the landlord worked closely with the City throughout the process to obtain the necessary permits for building out the facility. 'With this particular site and location, there is fermentation happening with other companies around us,' Dyson said. These include 21st Amendment Brewery and Drake's Brewing. 'That made this more appealing than some other options.' The San Leandro Air Protein Farm produces samples of its protein in large enough quantities for food product companies to use in their product development. Next up will be a larger commercial facility to support full-scale use of Air Protein in food for grocery shelves. 'That's the most exciting thing about 2025,' Dyson said. 'We're turning the science innovation that NASA started in the 1960s and 1970s, completing the mission and making it a reality.' LYTEN San Leandro lands new battery cell production facility Every once in a while, an opportunity comes along that is just too good to pass up. That's what happened to Lyten, a San Jose-based company specializing in supermaterial applications, which focuses on commercializing lithium-sulfur batteries as a high-performance, low-cost alternative to lithium-ion technology. The company was in the process of planning a gigafactory in Nevada and thinking about its next major production facility outside California when the perfect location popped up in San Leandro, said Chief Battery Technology Officer Celina Mikolajczak. A lithium-metal battery maker had closed, leaving behind a manufacturing space and equipment that was immediately of interest. Lyten snapped up the equipment and 119,000-square-foot lease at Gate510 that November. Mikolajczak expects to have a 100-megawatt-hour production line in San Leandro up and running in 2026. 'We were planning and tooling for a big factory, and then the opportunity to take over the lease in San Leandro occurred,' she said. 'We said, 'Wow, that's a big enough space. There's enough dry room capability there. There's enough power. We could get one high-volume production line running there and learn a hell of a lot and get a jump on being ready for a bigger factory.' Lyten's San Leandro site will deliver lithium-sulfur battery cells for multiple types of energy storage customers, including defense and drone applications. In doing so, the company will help U.S. manufacturers keep more of their supply chain close to home. 'With lithium-sulfur, we can develop the technology and commercialize it in the U.S. and be part of creating the next wave of manufacturing in this country,' Mikolajczak said. CORESHELL New battery anodes boost domestic supply chain Batteries have quickly become a crucial component in efforts to transition from fossil fuels to sustainable forms of energy. But the batteries most widely used in electric vehicles and other key applications today come with limitations. San Leandro-based Coreshell is one of the innovators working to change this. The company has developed a battery anode that uses 100% domestically sourced metallurgical silicon instead of graphite, allowing it to store significantly more energy without relying on a risky supply chain. 'We're replacing something that is produced only in China with silicon that is produced widely here in the United States and in Europe,' said Co-founder and CEO Jonathan Tan. 'It can be even more cost-effective.' Founded in 2017, Coreshell relocated its development work to the Gate510 campus in 2020 and opted to remain in the city when it was time to expand into the first stages of production in 2024. It moved across the street to another building on the Gate510 campus, where a team of approximately 50 people has a four megawatt-hour pilot production facility that produces its first battery cells ready for commercialization in electric vehicles. 'We're proposing a foundational change in battery chemistry by replacing graphite — one of the largest single materials in a battery — with silicon,' Tan said. 'It is imperative that we show the market how that will help people power their daily lives.' San Leandro was ideal because it offered a combination of the necessary infrastructure — including access to the heavy power Coreshell needs for manufacturing — and efficient permitting and other City support, Tan said. A San Leandro headquarters also gives Coreshell access to a strong talent pipeline from throughout the Bay Area's growing battery expertise. San Leandro Mayor Juan Gonzalez, and members of the City staff visited with Coreshell this spring. It was an opportunity for Tan and his team to share more about their work and talk about how the City can support the company's future growth. 'To have a receptive audience with the Mayor, the City Manager's office and others in San Leandro, it shows that they are invested in helping companies like Coreshell grow and be successful,' Tan said. 'We value that partnership and how they are actively working to find ways to support the success and growth of companies like ours.'

NASA: Senegal is 56th country to sign Artemis Accords
NASA: Senegal is 56th country to sign Artemis Accords

UPI

time5 hours ago

  • UPI

NASA: Senegal is 56th country to sign Artemis Accords

From left, Ambassador of Senegal to the United States Abdoul Wahab Haidara, Director General of the Senegalese space agency Maram Kairé, NASA Chief of Staff Brian Hughes and Department of State Bureau of African Affairs Senior Bureau Official Jonathan Pratt pose for a photo during an Artemis Accords signing ceremony Thursday at the Mary W. Jackson NASA Headquarters building in Washington. Photo by Keegan Barber/NASA July 25 (UPI) -- Senegal has become the 56th country to sign the Artemis Accords for peaceful space exploration, NASA announced Friday. Signing the Artemis Accords means to explore peaceably and transparently, to render aid to those in need, to ensure unrestricted access to scientific data that all of humanity can learn from, to ensure activities do not interfere with those of others, to preserve historically significant sites and artifacts, and to develop best practices for how to conduct space exploration activities for the benefit of all, a NASA press release said. "Today, NASA built upon the strong relations between our two nations as the Senegalese Agency for Space Studies signed the Artemis Accords," acting NASA Administrator Sean Duffy said. Director General of the Senegalese space agency Maram Kairé signed the accords on behalf of Senegal. Jonathan Pratt, senior bureau official for African Affairs at the U.S. State Department, and Abdoul Wahab Haidara, ambassador of Senegal to the United States, also participated in the event. "Senegal's adherence to the Artemis Accords reflects our commitment to a multilateral, responsible, and transparent approach to space," Kairé said. "This signature marks a meaningful step in our space diplomacy and in our ambition to contribute to the peaceful exploration of outer space." Astronomers from Senegal have supported NASA missions by participating in multiple observations when asteroids or planets pass in front of stars, casting shadows on Earth. In 2021, NASA also collaborated with Kairé and a group of astronomers for a ground observation campaign in Senegal. As the asteroid Orus passed in front of a star, they positioned telescopes along the path of the asteroid's shadow to estimate its shape and size. NASA's Lucy spacecraft will approach Orus in 2028, as part of its mission to explore Jupiter's Trojan asteroids. More countries are expected to sign the Artemis Accords in the months and years ahead, as NASA continues its work to establish a safe, peaceful and prosperous future in space, the release said.

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