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SpaceX Just Launched 57 New Starlink Satellites With Controversial Sun Shades - ScienceAlert
The skies could soon be crawling with tens of thousands of false stars. Making those satellites dimmer might not keep them out of astronomers' way.
After a two-month gap, SpaceX has resumed launching batches of dozens of satellites in its gambit to blanket Earth with high-speed internet access. The satellites are a new "VisorSat" variety to make them less shiny to the ground and especially to astronomers' telescopes. But researchers say the spacecraft's experimental new feature, while helpful, won't fully solve problems posed by the existence of Starlink itself (or other planned thousands-strong satellite fleets, for that matter). SpaceX, founded by Elon Musk, calls its internet project Starlink, and may deploy tens of thousands of the broadband internet-beaming satellites into low-Earth orbit. On Friday at 1:12 a.m ET, one of the company's Falcon 9 rockets launched a new batch of them, along with two Earth-imaging spacecraft built by BlackSky Global. SpaceX fitted all 57 of its desk-sized Starlink satellites with a new feature: sun visors or shades. The visors should deploy after launch and block sunlight from reflecting off the satellites' surfaces — glare that makes Starlink spacecraft appear as bright, moving trails in the night sky that can photobomb telescope observations, blot out faint astronomical objects, and even hinder searches for killer asteroids. SpaceX Starlink 5 satellites appear in a long-exposure image of the sky from Svendborg on South Funen, Denmark April 21, 2020. Ritzau Scanpix/Mads Claus Rasmussen via Reuters The visors will probably make the satellites less bright, but it won't stop them from interfering with astronomy, says astronomer Jonathan McDowell. "If you figure out where to put the visors, you should be able to really cut down those reflections. And that will make the satellites no longer naked-eye objects, which is good," he told Business Insider in June. "It won't, probably, make them so faint that they won't be a problem for professional astronomers." SpaceX did not immediately respond to a request for comment. Astronomers fear that SpaceX's bright satellites could outshine the stars The first batch of 60 high-speed Starlink internet satellites, each weighing about 500 pounds, flat-packed into a stack prior to their launch aboard a Falcon 9 rocket on May 23, 2019. SpaceX via Twitter After SpaceX launched its first set of Starlink satellites in May 2019, many astronomers were alarmed by how bright the new objects were. In the days after the launch, people across the world spotted the train of satellites, like a line of twinkling stars. "I felt as if life as an astronomer and a lover of the night sky would never be the same," astronomer James Lowenthal told The New York Times in November. "If there are lots and lots of bright moving objects in the sky, it tremendously complicates our job," Lowenthal added. "It potentially threatens the science of astronomy itself." Telescopes on Earth that look for distant, dim objects could pick up these false stars and ruin astronomers' data. A single satellite can create a continuous streak of light across a telescope's long-exposure images of the sky, blocking the objects astronomers want to study. "It takes just a couple seconds for the satellite to cross the telescope's field of view, but we take really long exposures with our cameras. So in that couple of seconds, a whole 10- or 15-minute exposure is ruined," McDowell said. An astronomer in the Netherlands captured the Starlink train zooming across the sky shortly after its launch. Vimeo/SatTrackCam Leiden The satellites can especially affect telescopes that observe close to the horizon near dawn — the kind of observations that help astronomers track asteroids flying close to Earth. SpaceX is sharing Starlink's orbital-path data with astronomers so that they can plan their telescope observations around the satellites' movements. Briefly shutting off the camera as the satellite passes overhead can save a long-exposure image. To date, SpaceX has flown nearly 600 Starlink spacecraft to orbit — the most of any satellite operator. But Musk's grand ambitions could make it practically impossible for astronomers to avoid the fast-moving satellites. SpaceX already has permission to launch nearly 12,000 satellites, and last year sought additional clearance to put up to a total of 42,000 satellites into orbit. And that's not counting other providers' plans. "If they're coming over all the time, then knowing when they're coming over isn't helpful," McDowell said. Even now, he added, sometimes astronomers can't avoid the photobombers. It's not yet clear how well a VisorSat works An illustration of SpaceX's Starlink satellite internet constellation in orbit around Earth. SpaceX It's unclear how effective the SpaceX's new visors will be, though the company launched an experimental "VisorSat" to test the concept on June 3. SpaceX has yet to report the results of that test. "We're still waiting for the satellite to reach its operational orbit," Youmei Zhou, an integration and test engineer for SpaceX's Crew Dragon spaceship, said during a live broadcast of the launch early Friday morning. Launching a whole fleet of visor-equipped satellites without widely sharing, or possibly knowing, the results of the experimental spacecraft visor seems like "a gusty move" to McDowell. "I think what it reflects is that they have much more confidence now that they understand the sources of the problem," he said. The company doesn't expect earlier, visor-free Starlink satellites to complete their five-year life span, Patricia Cooper, SpaceX's vice president of satellite government relations, told Spaceflight Now in May. That means that, in a few years, the brightest satellites may no longer appear in the sky. Satellite constellations pose larger problems that visors can't fix An animation of SpaceX's Starlink satellite constellation providing internet coverage to the Americas. SpaceX The Starlink fleet caught astronomers' attention for how bright it was, but it revealed a much larger problem: The skies could soon be swarming with false stars. SpaceX isn't the only company building a massive fleet of satellites. Companies like Amazon and OneWeb have similar aspirations to establish their own fleets and rake in billions of dollars each year. "If OneWeb goes ahead and launches its proposed constellation without mitigation, that is going to have very severe impacts on ground-based astronomy to the point that, for at least four months out of the year, it's going to be pretty impossible to do most observations," McDowell said. "You might as well just shut the observatory down for the summer months, because there's going to be so many satellites screwing up your data." Mitigating solar reflections also goes only so far. Astronomers also worry about invisible wavelengths of light that stand to compromise other forms of astronomy. The Federal Communications Commission, which authorizes the flight and use of internet-beaming satellites in the US, says preventing disruption to astronomy is "not a condition" for licensing — so SpaceX is pursuing solutions on its own accord. Sources known to Business Insider also say Amazon's Kuiper satellite-internet project is working with astronomers to reduce those satellites' impact. But SpaceX and others have yet to announce potential harm-reduction measures for radiowaves the satellites will broadcast, or for the infrared light they emit by producing heat. Both can interfere with telescopes on Earth that observe the skies using radio or infrared. "We're in a new phase of space utilization. It's a new space industrial revolution, things are different, and astronomy's going to be affected," McDowell said. "We just have to make sure we're part of the conversation so we can keep it down to the 'pain in the neck' level and not the 'give up and go home' level." Dave Mosher contributed reporting.
Europeans say they want a ban on British tourists this summer because of the coronavirus - Business Insider - Business Insider
A survey found that 61% of Spaniards wanted tourists barred from entering the country from the UK this summer.
Europeans want British tourists to stay away this summer, according to a new poll that found the UK at the bottom of a list of countries that were welcome on the continent. People in Spain, Germany, France, and Italy were all less receptive to unrestricted travel from the UK than they were for the other European countries they were asked about, perhaps reflecting the fact that the UK has recorded the highest coronavirus death toll in Europe. The YouGov poll surveyed people last week in nine European countries including the UK. It found that majorities in seven of the eight other European countries said they were opposed to allowing in UK tourists who did not have to spend any time self-isolating. Sixty-one percent of people in Spain were opposed, a figure roughly 15 percentage points higher than Spain's average opposition to tourists coming from France, Germany, or Italy. In Germany, the figure was 58%, while in France the figure was 55%. Italy was the sole European country where a majority was not opposed to UK tourists, though it was still opposed on net, with 44% opposed, 39% supportive, and 16% saying they didn't know. Only tourists from China and the US were more unwelcome than Brits, according to the poll. Seventy-five percent of Spaniards and 70% of Germans said they opposed unrestricted tourism from the US. More than 44,000 people with the novel coronavirus have died in the UK, according to figures from Johns Hopkins University, compared with nearly 35,000 who have died in Italy, nearly 30,000 in France, about 28,000 in Spain, and about 9,000 in Germany. The UK government announced last week that people in England would be able to travel to 59 countries without having to quarantine for 14 days upon their return. The list, which takes effect Thursday, includes Germany, Italy, Spain, and France. Visitors from those countries will also not be required to quarantine when they visit the UK, as had previously been the case, as part of a plan for "travel corridors." The poll also found that Britons were opposed to foreign visitors coming to the UK. Pluralities or majorities of British respondents opposed visitors from Spain, France, Germany, Italy, Sweden, and even Denmark, which has counted relatively few coronavirus cases. Visitors from China and the US were by far the least welcome. Seventy-two percent of British respondents said they opposed tourists from China, with just 13% in favor, while 76% said they opposed visitors from the US, compared with just 11% in favor. The poll also found that few Brits had any interest in vacations abroad this year anyway, with no destination supported by more than 21% of respondents. Loading Something is loading.
New poll finds most British people oppose Brexit and want to rejoin EU - Business Insider - Business Insider
A newly-released survey found that 57% of British people now want to rejoin the EU with support for Brexit collapsing.
There has been a surge in support for European Union membership among the British public since the Brexit referendum, according to a major new survey. The biennial European Social Survey found support for the EU has risen across the continent, including in Britain. The survey, which was completed in 2019, found that 57% of Brits would vote to be inside the EU, compared to 50% who said the same in the previous survey in 2017. By contrast, just 35% said they would now vote to be outside the EU, compared to the 44% who said the same in 2017 and the 52% of people who voted to leave in 2016. 8% of Brits said they would not vote in such a referendum. The findings have been released four years after Britain voted to leave, as the country faces an increasingly gloomy economic outlook amid the ongoing coronavirus pandemic. European Social Survey The UK is currently inside the Brexit transition period, which means that it maintains the same trade and customs rules that it had before leaving the EU. However, Boris Johnson's government has insisted that the UK will exit this transition period at the end of 2020, regardless of whether new trading arrangements are negotiated with the EU within that time. Nicolas Economou/NurPhoto via Getty Images The survey also found support for EU membership has increased across the continent, despite some predictions that Brexit would trigger a wave of opposition to the union in other European countries. All of the countries surveyed saw support for EU membership rise, the survey found. There was a 12% rise in support for EU membership in Finland and an 11% support for membership in the Czech Republic. In Britain support for membership has risen by 7% since the previous survey in 2017.