Elon Musks fleet of satellites dot the heavens — leaving stargazers upset

Two days after Elon Musk’s SpaceX launched 60 satellites in May as part of a mission to bring quick internet service to people worldwide, astronomers noticed something different.As some of the satellites zipped past the Lowell Observatory in Flagstaff, Arizona, telescopes trained on the night sky captured streaks of reflected sunlight that marred their view of a far-off star system.Astronomers now worry that the vast number of communications craft planned, including nearly 12,000 of Musk’s Starlink fleet, will shine so brightly that they’ll interfere with research that depends on delicate visual observations of distant galaxies and nearby asteroids. The new satellites will fly lower than many traditional craft, and will arrive in unprecedented numbers — all told, more than double the roughly 5,000 satellites that are circling Earth now. Amazon asks to join broadband space race with Elon Musk’s SpaceX Elon Musk’s personal fortune is shifting away from Tesla and toward SpaceX Elon Musk might lose his U.S. security clearance over marijuana toke on Joe Rogan’s podcast “We just happened to be pointed in the right direction, and Starlink flew right through it” on May 25, two days after launch, said Jeffrey Hall, director of the Lowell Observatory. The unexpected appearance helped to signal that, as Hall put it, “this is potentially a problem.”Musk’s Space Exploration Technologies Corp. is authorized to launch 11,943 satellites for its Starlink fleet, making it by far the leader in a total of nearly 13,000 low-Earth orbit satellites currently approved by the Federal Communications Commission, which coordinates trajectories and radio-frequency use. In addition, Amazon.com Inc.’s Jeff Bezos on Thursday filed to place 3,236 internet-beaming satellites into low-Earth orbit.The lower trajectories offer minimal lag time for data to bounce between the ground and the spacecraft, overcoming the signal lethargy that’s limited internet-from-space schemes dependent on traditional communications satellites. Those older craft are parked some 22,000 miles (36,000 kilometers) above the Earth, an altitude that lets them appear to hover in one spot.At low-Earth orbit — altitudes of just 112 to 1,200 miles — satellites need to race around the globe to stay aloft, completing orbits in as little as 90 minutes. As one moves toward the horizon it will pass signal duties off to the next satellite coming by.Many satellites are needed if continuous, widespread coverage is the goal — thus the constellations planned by Musk and others.There are currently 1,338 satellites in low-Earth orbit, according to a database compiled by the Union of Concerned Scientists. NASA, the U.S. space agency, tallied 4,972 satellites in its most recent count of payloads that are active and defunct.The number of stars visible to the unaided human eye isn’t much more than 1,628, which is how many are registered at the 5th magnitude of a brightness scale used by scientists, Robert Zinn, an astronomer at Yale University, said in an email. Abnormally favourable conditions (exceptional eyesight, total darkness with no light pollution, and no moonlight) could yield more.Plans for low-flying satellite fleets have been around for years. The realization that they might startle sky-watchers seems novel. A video of the Starlink satellites floating in a train across the sky has attracted more than 1.3 million views on the Vimeo video-sharing site. And Musk’s public statements have varied.“Sats will be in darkness when stars are visible,” Musk tweeted May 25, replying to solar system researcher Alex Parker, who on Twitter said the sight of SpaceX satellites launched two days earlier “gives me pause” because “they’re bright and there are going to be a lot of them.”Two days later, Musk tweeted that “Starlink won’t be seen by anyone unless looking very carefully & will have ~0% impact on advancements in astronomy.”He followed with a tweet saying, “We’ll make sure Starlink has no material effect on discoveries in astronomy.” Musk added that he’d sent a note to the Starlink team about “albedo reduction,” or cutting the proportion of light reflected from the spacecraft.Astronomers ConcernedAstronomers are studying the extent of the problem, said Pat Seitzer, former chair of the Committee on Light Pollution, Radio Interference, and Space Debris at the American Astronomical Society, which represents professional astronomers in North America.The satellites may be less bright once moved into planned higher orbits, and their visibility may vary with the seasons: their altitude means they’ll stay out of the Earth’s shadow and remain in sunlight even after dusk for a longer period in the summer than the winter.“Our concern is just how bright they might be,” said Seitzer, an astronomer at the University of Michigan.Radio TelescopesAstronomers who use radio telescopes that rely on the non-visible spectrum also may be affected. They’ll need to adjust to a sky full of low-orbiting satellites, said Harvey Liszt, spectrum manager with the National Radio Astronomy Observatory based in Charlottesville, Virginia. The orbiting spacecraft will communicate via radio, generating celestial background noise that astronomers need to take into account as they listen for faint signals from distant reaches of the universe.“We will have to learn how to operate our electronics to detect weak cosmic signals in the presence of satellite signals at other frequencies that will be millions of times stronger,” Liszt said by email.Trustees of the American Astronomical Society quickly passed a resolution expressing concern after Starlink burst upon their scene, and the century-old International Astronomical Union commented as well.“Reflections from the sun in the hours after sunset and before sunrise make them appear as slow-moving dots in the night sky,” the union said in a June 3 statement. Though hard to pick out with the naked eye, “they can be detrimental to the sensitive capabilities of large ground-based astronomical telescopes.”500 PoundsSpaceX said it plans to raise the satellites to operate at an altitude of 342 miles, compared with their altitude after launch of 273 miles.“The observability of the Starlink satellites is dramatically reduced as they raise orbit,” Eva Behrend, a SpaceX spokeswoman, said in an email. SpaceX will turn the satellites and that may change their appearance, Behrend said.SpaceX hasn’t disclosed the dimensions of the satellites, which it says weigh 500 pounds (227 kilograms) each. All 60 of the initial Starlink satellites were sent aloft in one mission, and fit into a rocket’s fairing, or cargo bay, which is 43 feet (13 metres) long and 17 feet (5 metres) in diameter.Some traditional satellites tend to be larger. For instance, the high communications satellites that appear to hover over one spot can weigh 13,000 pounds or more. And the Union of Concerned Scientists database lists about 1,000 spacecraft that are heavier than Starlink satellites.Humanity in BalanceThe proposals for fleets serving up broadband from space fit a terrestrial policy imperative: to expand high-speed internet service to people and places left poorly served by traditional communications providers.It’s not clear who can help if scientists determine the fleets of tomorrow will interfere with multi-million dollar telescopes that can detect objects millions of times dimmer than visible with the naked eye. The FCC ensures that satellite constellations don’t cause radio interference and don’t risk collisions, the agency said in 2017. Neil Grace, an FCC spokesman, declined to comment.NASA doesn’t regulate orbits or the spacecraft that enter them, said J.D. Harrington, a spokesman for the U.S. space agency. The Federal Aviation Administration regulates the safety of commercial launches and doesn’t regulate satellites, said Greg Martin, a spokesman.The legal arena “is really the Wild West” and “international space law doesn’t really deal with this use of outer space at all,” John Barentine, public policy director for the International Dark-Sky Association, which works to protect night vistas from light pollution, said in an email.Concern extends to the purely aesthetic level, as some contemplate the visual blight brought to heavens untouched for millennia, but now marked by the satellite age.“Darkness and the inspiration that the natural night sky brings to humanity has resulted in great works of art, literature and music,” Barentine said. “The prospect of losing all that is the prospect of severing a key tie between humanity and the natural world.”Bloomberg.com read more

Marks and Spencer pulls its cauliflower steak as supermarkets urged to cut

first_imgOther supermarkets quickly jumped on board as more consumers decided to try ‘clean eating’ and veganism, with Sainsbury’s attributing its 2016 sales rise to its new pre prepared vegetable range including “squaffles” – butternut squash waffles – broccoli ‘rice’ and courgetti. Sainsbury's offers many "carb alternatives" However, these options, campaigners argue, are a product of our “throwaway culture” as consumers opt for these easy, plastic-packaged options instead of preparing vegetables themselves.Waitrose is selling “Mushotto” – mushroom ‘rice’ risotto- and celeriac rice, and Tesco’s range includes butternut squash spaghetti and fusilli in its collection of 62 pre-prepared, plastic-packaged vegetables.Sainsbury’s has increased its “clean eating” pre-prepared vegetables range in order to catch the attention of January dieters and those particpating in “veganuary”. It offers 59 examples of pre-prepared, plastic-wrapped vegetables including courgetti, crinkle-cut butternut squash chips and mushroom “mince”.The government has attempted to crack down on plastic waste in the wake of David Attenborough-narrated documentary “Blue Planet”, with a ban on plastic microbeads found in toothpaste and cosmetics coming into action on Tuesday, and Theresa May hinting at a levy on plastic bottles and throwaway coffee cups.However, some backbenchers think more efforts should be taken, with Zac Goldsmith hinting the Government should take action on supermarkets more interested in their bottom line than targeting waste.The Richmond MP told The Telegraph: “There can’t be many clearer examples of the stupidity of our throwaway culture than these absurdly overpriced and overpackaged vegetables.“Millions of us have seen Blue Planet and even if we didn’t know about the grotesque plastic problem affecting our oceans before, we do now. She told The Telegraph: “We want to see a reduction of plastic packaging and its global pollution problem. In the case of ready meals and pre-prepared vegetables, retailers are often taking products which are fabulously wrapped by nature and wrapping them in polluting plastic.”We urge consumers to make informed choices and avoid overpackaged goods- a decision which is good for the environment as well as their wallets. We are campaigning for retailers to reduce their plastic packaging particularly on plastic which cannnot be easily recycled.”We are finding shocking amounts of plastic on our beaches and in our seas, which is why we are calling on Governments to stop this plastic tide. While consumers can take a stance and not buy products wrapped in plastic, we urgently need the government to introduce a levy to minimise its use.”A Waitrose spokesperson said: “We have committed to making all our own-label packaging widely recyclable (using the widely recycled logo), reusable or home compostable by 2025.”Tesco, Sainsbury’s, and Marks and Spencer have all been contacted for comment. Zac Goldsmith thinks the Government could force supermarkets to take action if they won't reduce waste themselves “We’ve seen a few good steps, like the plastic bag charge, which has cut the amount we use. But we need do much more.  “The retailers are a huge part of the problem, but they could so easily become part of the solution. They need to take responsibility, and if they don’t, they need to be made to by Government.” The Marine Conservation Society’s Head of Pollution, Dr Laura Foster, said “overpackaged” goods are contributing to the world’s pollution problem and asked the government to introduce a levy. A Defra spokesperson said supermarkets should not be taking part in wasteful behaviour, commenting: “Everyone has a role to play in tackling the scourge of plastics waste, and businesses need to make sure their packaging does not exceed what is required to make sure that the products are safe, hygienic and acceptable for both the product and for the consumer. Marks and Spencer stores are selling sliced cauliflower as ‘Cauliflower Steak’ with lots of lovely plastic and charging £2 (normally £2.50). A cauliflower costs about 69p from a local veg shop. 😑 pic.twitter.com/v9ocsIAB0R— Rachel Clarke (@rachclarke27) January 5, 2018center_img There was widespread outrage over Marks and Spencer’s cauliflower ‘steaks’, which contain what some shoppers thought was excessive packaging.Days after pictures of the sliced vegetable appeared on social media, the department store confirmed it would no longer be selling it.A spokesperson said: “Once we’ve sold the stock that is currently in stores, we won’t be ordering any more of this product.”We work hard to create quick and convenient meals for customers; however, on this occasion we didn’t get it right.”We have launched many other vegetarian dishes that are already proving popular with customers.” Zac Goldsmith thinks the Government could force supermarkets to take action if they won’t reduce waste themselvesCredit: Anthony Upton “We will set out further steps to achieve these goals shortly, including in our forthcoming 25 Year Environment Plan and Resources and Waste Strategy.”Elena Polisano, Oceans Campaigner for Greenpeace UK said customers should save themselves money as well as saving the environment by buying whole vegetables: “Whilst some people have great difficulty peeling and chopping vegetables, and so get real benefits from pre-prepared versions, the bulk of customers are paying double, and polluting our environment, just to save a minute or two’s work in the kitchen. There are two obvious ways to improve this situation. Supermarkets need to make all their packaging recyclable, make less of it, and make less of it from plastic, and those of us who are physically capable of chopping our own vegetables should think seriously about the costs and benefits of buying pre-prepared, plastic packed veg.”Friends of the Earth waste campaigner Julian Kirby said: “Cutting back on meat and choosing more plant-based protein…needn’t fuel the use of plastic packaging.”People can improve their diets and save money by prepping food themselves – which will also help avoid unnecessary packaging.” Riceless risotto (mushotto).Courgette spaghetti (courgetti).Butternut squash lasagna sheets. Whatever next..?#foodfads pic.twitter.com/s9ovWil2Hp— Geraldine Jones (@EWC_wordsmith) January 15, 2017 Supermarkets have been urged to halt the trend of packaged vegetables after cashing in on the ‘clean-eating’ craze as the government and campaigners warn of an increase in plastic waste in our seas.Marks and Spencer was forced to stop the production of its ‘cauliflower steaks’, after there was widespread backlash over the ‘excessive’ plastic packaging and the inflated price.The shop was criticised on social media after a shocked customer pointed out that their £2.50 cauliflower ‘steaks’ are simply sliced cauliflowers sold in excessive packaging. She commented that at her grocery store, one can buy a cauliflower for a little over 60 pence. Marks and Spencer sells a whole cauliflower for a pound. A spokesperson confirmed to the Telegraph that the packaged cauliflower will no longer be sold once current stock runs out because of complaints over packaging and price.Dieters have also been told to prepare their own food instead of choosing the “lazy” pre-prepared vegetable option, especially as stores capitalise on January’s ‘clean eating’ and ‘veganuary’ trends by expanding their packaged vetable lines.In 2015, Tesco became the first UK supermarket to introduce plastic-packaged ‘courgetti’, or courgette ‘spiralized’ to look like spaghetti as a low carbohydrate alternative, after lifestyle bloggers such as Deliciously Ella popularised the trend. Sainsbury’s offers many “carb alternatives” Want the best of The Telegraph direct to your email and WhatsApp? Sign up to our free twice-daily  Front Page newsletter and new  audio briefings.last_img read more