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    Leonids Meteor Shower: When and How to Watch Its Peak

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    The event produces some of the year’s fastest meteors, although the nearly full moon may make them challenging to spot.Our universe might be chock-full of cosmic wonder, but you can observe only a fraction of astronomical phenomena with your naked eye. Meteor showers, natural fireworks that streak brightly across the night sky, are one of them.The latest observable meteor shower will be the Leonids, which have been active since at least Nov. 6 and are forecast to continue through Nov. 30. They reach their peak Nov. 16 to 17, or Saturday night into Sunday morning.Meteors from the Leonids can be spotted in the constellation Leo, and they will be visible from both the Northern and Southern Hemispheres. The Leonids produce some of the fastest meteors each year, at 44 miles per second, with bright, long tails. But this year, spotting them may be difficult during the peak because of the nearly full moon.To get a hint at when to watch, you can use a meter that relies on data from the Global Meteor Network showing when real-time fireball activity levels increase in the coming days.Where meteor showers come fromThere is a chance you might see a meteor on any given night, but you are most likely to catch one during a shower. Meteor showers are caused by Earth passing through the rubble trailing a comet or asteroid as it swings around the sun. This debris, which can be as small as a grain of sand, leaves behind a glowing stream of light as it burns up in Earth’s atmosphere.We are having trouble retrieving the article content.Please enable JavaScript in your browser settings.Thank you for your patience while we verify access. If you are in Reader mode please exit and log into your Times account, or subscribe for all of The Times.Thank you for your patience while we verify access.Already a subscriber? Log in.Want all of The Times? Subscribe. More

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      Try This Quiz on Books That Were Made Into Great Space Movies

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      Welcome to Great Adaptations, the Book Review’s regular multiple-choice quiz about books that have gone on to find new life as movies, television shows, theatrical productions, video games and more. This week’s challenge is focused on fiction and nonfiction works about space exploration that were adapted into popular films.Just tap or click your answers to the five questions below. And scroll down after you finish the last question for links to the books and their movie versions. More

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      Enigmas Seen With James Webb Space Telescope May Be Stellar Bullying Victims

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      Some 1,350 light-years from Earth, astronomers detected strange pairs of unexplained objects orbiting in the Orion Nebula. Since then, about 12 months ago, other scientists have proposed a new potential explanation for these apparitions, while other researchers wonder whether they exist at all.“There’s a bit less confidence they exist,” said Rosalba Perna, a theoretical astrophysicist at Stony Brook University. But “even just having one would revolutionize what we thought was possible” for star and planet formation.Using the James Webb Space Telescope, astronomers have started to reveal the Orion Nebula in glorious detail, showcasing the brilliant swirling clouds of dust and gas that will give rise to hundreds of stars in the next few million years.Two scientists, Mark McCaughrean at the Max Planck Institute for Astronomy in Germany and Samuel Pearson from the European Space Agency in the Netherlands, detected more than 40 pairs of objects similar in mass to Jupiter floating within the nebula. They named the objects Jupiter Mass Binary Objects, or JuMBOs.A James Webb Space Telescope image showing the spectrum of light from objects in the Orion Nebula, known as Jupiter Mass Binary Objects, among some of the fainter lines. The white dots in the image are bad pixels and cosmic ray hits, not stars.Mark McCaughrean (MPIA) & Sam Pearson (ESA)scienceThe JuMBOs suggested something was wrong in our understanding of star and planet formation. Stars form from the gravitational collapse of dust and gas, but JuMBOs appeared to be too small to have undergone this process, suggesting they formed as planets around stars that were then ejected. However, their presence in pairs complicates this scenario. It is unlikely that dozens of pairs of planets thrown from a star would end up orbiting one another because of their low gravitational attraction.We are having trouble retrieving the article content.Please enable JavaScript in your browser settings.Thank you for your patience while we verify access. If you are in Reader mode please exit and log into your Times account, or subscribe for all of The Times.Thank you for your patience while we verify access.Already a subscriber? Log in.Want all of The Times? Subscribe. More

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      California Rejects Bid for More Frequent SpaceX Launches

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      A commission denied a request to increase the number of rocket launches on the state’s central coast, citing environmental concerns.A California state commission this week rejected the U.S. Space Force’s bid to increase the number of SpaceX rocket launches on the state’s central coast, citing concerns about the environmental impacts of the launches.The Space Force had sought to increase the number of launches of SpaceX’s flagship Falcon 9 rocket from 36 to 50 per year out of California. But on Thursday, the California Coastal Commission denied the bid in a 6-4 vote, pointing to its previous requests for the military and SpaceX to mitigate the disruptive sonic booms caused by the rockets and to keep a closer eye on the operations’ effects on the state’s wildlife.The commission also rejected the military and SpaceX’s argument that the launches should be considered a federal activity, saying they mostly benefit SpaceX and its private business operations, as opposed to the government.The move came just a couple of months after the commission had approved increasing the number of SpaceX launches to 36, contingent on the military’s commitment to adopting such measures. The board, which is tasked with protecting the state’s coastal resources, previously expressed its reservation for approving more launches without understanding the effects of the sonic booms and launch debris on wildlife.SpaceX, which is owned by Elon Musk, has grown to dominate the space launch business, serving as the primary provider to both NASA and the Pentagon. It has blasted its own commercial satellites into space out of bases across the country at a rapid clip, and it is set to test its new Starship rocket on Sunday in Texas. In California, SpaceX carries out many of its missions at the Vandenberg Space Force Base in Santa Barbara County.But the sonic booms have been startling residents in Southern California, whose homes have been shaken by powerful, confusing jolts, The Los Angeles Times reported. And several environmental groups submitted letters urging the commission to take more time to study the impact on wildlife ahead of this week’s meeting.We are having trouble retrieving the article content.Please enable JavaScript in your browser settings.Thank you for your patience while we verify access. If you are in Reader mode please exit and log into your Times account, or subscribe for all of The Times.Thank you for your patience while we verify access.Already a subscriber? Log in.Want all of The Times? Subscribe. More

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      F.A.A. Clears the Way for SpaceX to Hold Starship Launch on Sunday

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      The agency said the company had agreed to study the environmental impact of its launches in South Texas and ways to mitigate harm to wildlife.The Federal Aviation Administration issued a new license on Saturday allowing Elon Musk’s SpaceX company to launch its Starship rocket again from South Texas, and it included new requirements to limit the harm to birds’ nests and other wildlife in an adjacent state park and National Wildlife Refuge.The action by the F.A.A., which came after weeks of pressure by Mr. Musk on the agency to speed up its latest review, allows Mr. Musk to go ahead with his next test of Starship, with a launch now set to take place as early as 8 a.m. Eastern time on Sunday.So far, SpaceX has been required to obtain a license for each launch. With the latest license, the F.A.A. is allowing the company to launch more than once, unless it modifies its procedures.Starship, the largest rocket ever built, has not yet carried any humans into space, as its reliability is still being assessed. But this is the spaceship that Mr. Musk is under contract to use to land NASA astronauts on the moon — and that he hopes to someday use to take humans to Mars.But as prototypes and full-scale versions of the rocket have been tested at the company’s launch site at the edge of the Gulf of Mexico near the Mexican border in South Texas, there has been widespread evidence of environmental consequences to the region, as detailed in a New York Times investigation in July.The report in The Times examined, in part, damage that a Starship launch in June caused to the fragile migratory bird habitat surrounding the launch site, including destroying eggs in nearby nests.We are having trouble retrieving the article content.Please enable JavaScript in your browser settings.Thank you for your patience while we verify access. If you are in Reader mode please exit and log into your Times account, or subscribe for all of The Times.Thank you for your patience while we verify access.Already a subscriber? Log in.Want all of The Times? Subscribe. More

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      Rare Northern Lights Entrance Viewers in New York and Beyond

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      The aurora borealis, which transformed the sky with startling streaks of pink and purple, arose from a magnetic storm.As a girl in Michigan, Gabriela Aguilar sometimes went looking for the northern lights in the state’s Upper Peninsula. But it wasn’t until Thursday night, when she climbed to the roof of her apartment building in Harlem, that she finally saw them.“I’m just shocked that it took my entire life to be able to see it,” said Dr. Aguilar, 37, who stood with her dog, Gomez, and watched the sky turn pink, purple and green until the autumn chill drove her back inside. “And — of all places — seeing it in New York City!”New Yorkers were treated to a rare light show Thursday night as the aurora borealis, also known as the northern lights, spread an ethereal smear across the sky. On social media, people as far south as Washington, D.C., and Kentucky reported seeing the lights, which in pictures seemed to vary in color and intensity from neon pink to a subtle hazy purple.Udi Ofer, a professor of public affairs at Princeton University, was at home shortly after dusk when a neighbor texted to alert him to the sky. He rushed to his backyard in Princeton, N.J., with his 9-year-old daughter and 4-year-old son.For about 20 minutes, they watched stripes of pink and purple as the stars began to come out.“I think the thing that’s most remarkable about it are the streaks of light, which I just didn’t expect,” Mr. Ofer, 49, said. He called them “pretty magical.”The northern lights were also seen from behind Gracie Mansion, the mayor’s official residence, on the Upper East Side.City of New YorkWe are having trouble retrieving the article content.Please enable JavaScript in your browser settings.Thank you for your patience while we verify access. If you are in Reader mode please exit and log into your Times account, or subscribe for all of The Times.Thank you for your patience while we verify access.Already a subscriber? Log in.Want all of The Times? Subscribe. More

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      SpaceX to Launch Crew-9 Mission for NASA: How to Watch

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      Two astronauts — one American, one Russian — will launch on a flight that is set to bring the Boeing Starliner astronauts home next year.Eight times during the past four years, SpaceX has provided a regular astronaut transportation service for NASA from Kennedy Space Center in Florida.Its next flight to the International Space Station, scheduled to launch on Saturday, will not be like the previous eight.There will be two, not four, astronauts aboard. Two other astronauts who were assigned to the mission will remain on Earth. And the mission, named Crew-9, will launch from a different launchpad.The shuffling is a consequence of difficulties with a different spacecraft, Boeing’s Starliner, over the summer.“The word that comes to mind for this flight is ‘agility,’” Steve Stich, the manager for NASA’s commercial crew program, said during a prelaunch news conference on Friday.Here’s what you need to know about Saturday’s launch, and why it’s unlike other recent NASA astronaut missions.We are having trouble retrieving the article content.Please enable JavaScript in your browser settings.Thank you for your patience while we verify access. If you are in Reader mode please exit and log into your Times account, or subscribe for all of The Times.Thank you for your patience while we verify access.Already a subscriber? Log in.Want all of The Times? Subscribe. More

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      There Might Be More Than One Way to Make a Planet

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      Astronomers have found evidence of a process that supports an alternative, more rapid approach to planetary formation, more top down than bottom up.When it comes to making a planet, astronomers have long subscribed to what Cassandra Hall, an astronomer at the University of Georgia’s Center for Simulational Physics, refers to as the “bottom up” approach: The gas and dust swirling around a young star slowly clumps together over millions of years, and its gravity shapes it into a rounded object.But a discovery by Dr. Hall and her colleagues, published in the journal Nature this month, suggests that the picture might be more complex.In a star system 508 light-years from Earth, the researchers found conditions that support an alternative “top down” approach to planet formation, in which the fertile material circling a young star rapidly collapses into a planet. The mechanism, known as gravitational instability, could explain the existence of mysterious, massive worlds known to follow wide orbits around relatively young stars.“There’s never been real, hard evidence of it happening before,” Dr. Hall wrote in an email. “We found it!”The cosmic matter stirring around an infant star is ripe with planet-forming potential. The matter is known as a protoplanetary disk, and its rotation is generally driven by the gravity of its host star. But if that disk gets large enough, it can be influenced by its own gravity, causing the young star system to become unstable. Regions of higher density in the disk emerge in the form of spiral arms, similar to the shape of spinning clouds in a hurricane.“The star would be like the eye of the storm,” said Jess Speedie, a graduate student at the University of Victoria in Canada who led the study under the supervision of Ruobing Dong, an astrophysicist.We are having trouble retrieving the article content.Please enable JavaScript in your browser settings.Thank you for your patience while we verify access. If you are in Reader mode please exit and log into your Times account, or subscribe for all of The Times.Thank you for your patience while we verify access.Already a subscriber? Log in.Want all of The Times? Subscribe. More

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      SpaceX Polaris Dawn Spacewalk: How to Watch the Astronauts

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      The astronauts of the Polaris Dawn mission, after traveling through heavy radiation and high orbits, are getting ready to open the hatch of their SpaceX vehicle.Early Thursday morning, four private astronauts circling far above Earth will try something daring — let all the air out of their spacecraft.That will be a prelude for two of the astronauts, who will then venture outside for the first commercial spacewalk ever, an event that is to be the highlight of the Polaris Dawn mission led by Jared Isaacman, a billionaire entrepreneur.When is the spacewalk and how can I watch it?The spacewalk is scheduled to begin at 2:23 a.m. Eastern time. SpaceX plans to broadcast live coverage starting one hour before the spacewalk begins.If needed, a backup opportunity is available on Friday at the same time.What will happen during the spacewalk?Because there is no airlock in the SpaceX Crew Dragon spacecraft used for the flight, the only way to perform a spacewalk is to let all the air out of the spacecraft, and then open one of the hatches. That requires all four crew members to wear spacesuits.NASA and Soviet astronauts conducted spacewalks in a similar manner in the 1960s.As the Crew Dragon swings around Earth in an elliptical orbit that swings as close as 120 miles to the surface and as high as 460 miles, Mr. Isaacman and Sarah Gillis, a SpaceX engineer, will exit the capsule for about 15 to 20 minutes each.They will pass through the hatch at the top of the Crew Dragon with the help of a handrail that SpaceX has named Skywalker, moving around carefully and deliberately. The two will not be outside the spacecraft at the same time.We are having trouble retrieving the article content.Please enable JavaScript in your browser settings.Thank you for your patience while we verify access. If you are in Reader mode please exit and log into your Times account, or subscribe for all of The Times.Thank you for your patience while we verify access.Already a subscriber? Log in.Want all of The Times? Subscribe. More