{"id":12736,"date":"2020-01-07T22:21:02","date_gmt":"2020-01-07T14:21:02","guid":{"rendered":"https:\/\/wp-productionenv-bjg9h2g2bgg5b8aa.southeastasia-01.azurewebsites.net\/news\/spacex-launches-more-starlink-satellites-tests-design-change-for-astronomers\/"},"modified":"2020-01-07T22:21:02","modified_gmt":"2020-01-07T14:21:02","slug":"spacex-launches-more-starlink-satellites-tests-design-change-for-astronomers","status":"publish","type":"post","link":"https:\/\/starpath.global\/news\/spacex-launches-more-starlink-satellites-tests-design-change-for-astronomers\/","title":{"rendered":"SpaceX launches more Starlink satellites, tests design change for astronomers"},"content":{"rendered":"<figure id=\"attachment_42731\" aria-describedby=\"caption-attachment-42731\" style=\"width: 720px\" class=\"wp-caption alignnone\"><img fetchpriority=\"high\" decoding=\"async\" class=\"size-full wp-image-42731\" src=\"http:\/\/spaceflightnow.com\/wp-content\/uploads\/2020\/01\/f9starlink2_streak1.jpg\" alt=\"\" width=\"720\" height=\"480\" srcset=\"https:\/\/spaceflightnow.com\/wp-content\/uploads\/2020\/01\/f9starlink2_streak1.jpg 720w, https:\/\/spaceflightnow.com\/wp-content\/uploads\/2020\/01\/f9starlink2_streak1-300x200.jpg 300w, https:\/\/spaceflightnow.com\/wp-content\/uploads\/2020\/01\/f9starlink2_streak1-678x452.jpg 678w\" sizes=\"(max-width: 720px) 100vw, 720px\"><figcaption id=\"caption-attachment-42731\" class=\"wp-caption-text\">SpaceX\u2019s Falcon 9 rocket streaks downrange to the northeast from Cape Canaveral Monday night with 60 Starlink satellites for the company\u2019s planned global Internet network. Credit: SpaceX<\/figcaption><\/figure>\n<p>Sixty more satellites for SpaceX\u2019s Starlink global Internet network streaked into orbit Monday night from Cape Canaveral, including one spacecraft to test an experimental dark coating to address scientists\u2019 concerns that the thousands of the quarter-ton, flat-panel satellites will impede astronomical observations.<\/p>\n<p>The launch of 60 more spacecraft for the Starlink project, which SpaceX sees as a core business area in the coming years, makes the company the operator of the largest fleet of commercial satellites, surpassing the previous mark set by Planet, an operator of Earth-imaging nanosatellites.<\/p>\n<p>SpaceX wants to begin limited Internet service through the Starlink network later this year, then expand to global service to beam Internet signals to consumers in far-flung locales outside the reach of terrestrial wired broadband connections. Users on airplanes, ships and the U.S. military could also be Starlink customers.<\/p>\n<p>Blazing a similar trail to two previous Starlink satellite launches last year, a SpaceX Falcon 9 rocket lifted off from pad 40 at Cape Canaveral at 9:19:21 p.m. EST Monday (0219:21 GMT Tuesday) and turned on a northeasterly heading over the Atlantic Ocean.<\/p>\n<p>Nine kerosene-fueled Merlin 1D engines on the base of the first stage powered the rocket off the launch pad with 1.7 million pounds of thrust.<\/p>\n<p>After two-and-a-half minutes, the nine main engines shut down and the first stage separated to begin descent maneuvers toward a landing on SpaceX\u2019s drone ship \u201cOf Course I Still Love You\u201d in the Atlantic Ocean.<\/p>\n<p>The first stage \u2014 flying for the fourth time on Monday night\u2019s mission \u2014 nailed its landing on the drone ship, marking the 48th time SpaceX has successfully landed a Falcon booster since the company\u2019s first rocket recovery in 2015. An attempt to catch one half of the Falcon 9\u2019s clamshell-like payload fairing in a net fastened to an ocean-going vessel was unsuccessful, SpaceX said.<\/p>\n<p>The Falcon 9\u2019s second stage ignited its Merlin engine two times to place the 60 Starlink satellites into an orbit with a target altitude of 180 miles (290 kilometers) and an inclination of 53 degrees to the equator.&nbsp;SpaceX confirmed the Falcon 9 injected the payloads close to the planned orbit.<\/p>\n<p>Retention rods holding the 60 flat-panel Starlink spacecraft to the Falcon 9 rocket released at 10:20 p.m. EST (0320 GMT) to allow separation of the satellites.<\/p>\n<p><iframe id=\"twitter-widget-0\" scrolling=\"no\" frameborder=\"0\" allowtransparency=\"true\" allowfullscreen=\"true\" class=\"\" style=\"position: static; visibility: visible; width: 0px; height: 0px; display: block; flex-grow: 1;\" title=\"X Post\" src=\"https:\/\/platform.twitter.com\/embed\/Tweet.html?dnt=false&amp;embedId=twitter-widget-0&amp;features=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%3D%3D&amp;frame=false&amp;hideCard=false&amp;hideThread=false&amp;id=1214387907391361024&amp;lang=en&amp;origin=https%3A%2F%2Fspaceflightnow.com%2F2020%2F01%2F07%2Fspacex-launches-more-starlink-satellites-tests-design-change-for-astronomers%2F&amp;sessionId=97840c0276cee88abf363e326c567422cb81810a&amp;theme=light&amp;widgetsVersion=6a3ad42b224df%3A1778106238597&amp;width=550px\" data-tweet-id=\"1214387907391361024\"><\/iframe><\/p>\n<blockquote class=\"twitter-tweet\" data-twitter-extracted-i1782696797222574347=\"true\">\n<p dir=\"ltr\" lang=\"en\">Retention rods holding the 60 Starlink satellites to the Falcon 9\u2019s second stage have been released. The 60 spacecraft are floating away from the Falcon 9 rocket as it soars at an altitude of nearly 200 miles south of Australia. https:\/\/t.co\/KNZ3rpnyfs pic.twitter.com\/Hu8OIrtqqd<\/p>\n<p>\u2014 Spaceflight Now (@SpaceflightNow) January 7, 2020<\/p>\n<\/blockquote>\n<p><script async=\"\" src=\"https:\/\/platform.twitter.com\/widgets.js\" charset=\"utf-8\"><\/script><\/p>\n<p>An on-board camera view showed the 60 satellites deploy from the Falcon 9\u2019s second stage. The Starlink relay stations were expected to begin dispersing in the coming days, while SpaceX control teams perform tests and activate the satellites\u2019 krypton-fed ion thrusters to begin maneuvering toward their planned operating altitude of 341 miles (550 kilometers).<\/p>\n<p>The launch Monday kicked off a brisk pace of launches by SpaceX planned for 2020.<\/p>\n<p>Gwynne Shotwell, SpaceX\u2019s president and chief operating officer, said last month the company could perform as many as 35 to 38 launches this year from three launch pads in Florida and California. That figure does not include potential test flights of SpaceX\u2019s next-generation Starship vehicle.<\/p>\n<p>The bulk of SpaceX\u2019s missions in 2020 will add satellites to the company\u2019s Starlink constellation of broadband satellites.<\/p>\n<p>SpaceX plans to operate the initial block of 1,584 Starlink satellites in orbits 341 miles above Earth. The company has regulatory approval from the Federal Communications Commission to eventually field a fleet of up to 12,000 small Starlink broadband stations, and has hinted in additional regulatory filings that it could seek to operate up to 42,000 Starlink spacecraft.<\/p>\n<p>In response to concerns from astronomers, Shotwell said one of the 60 satellites set for launch Monday will test a new less-reflective coating designed to reduce the brightness of the spacecraft. The first 120 satellites were brighter than expected, raising worries from scientists that thousands of Starlink craft could interfere with astronomical observations.<\/p>\n<p>The satellites are especially bright soon after launch, when they are bunched together and flying at lower altitudes.<\/p>\n<figure id=\"attachment_42728\" aria-describedby=\"caption-attachment-42728\" style=\"width: 900px\" class=\"wp-caption alignnone\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-42728 size-full\" src=\"http:\/\/spaceflightnow.com\/wp-content\/uploads\/2020\/01\/f9starlink2_quick2.jpg\" alt=\"\" width=\"900\" height=\"444\" srcset=\"https:\/\/spaceflightnow.com\/wp-content\/uploads\/2020\/01\/f9starlink2_quick2.jpg 900w, https:\/\/spaceflightnow.com\/wp-content\/uploads\/2020\/01\/f9starlink2_quick2-300x148.jpg 300w, https:\/\/spaceflightnow.com\/wp-content\/uploads\/2020\/01\/f9starlink2_quick2-768x379.jpg 768w, https:\/\/spaceflightnow.com\/wp-content\/uploads\/2020\/01\/f9starlink2_quick2-678x334.jpg 678w\" sizes=\"(max-width: 900px) 100vw, 900px\"><figcaption id=\"caption-attachment-42728\" class=\"wp-caption-text\">SpaceX\u2019s Falcon 9 rocket lifts off Monday night. Credit: Steven Young\/Spaceflight Now<\/figcaption><\/figure>\n<p>\u201cDuring orbit raise, the satellites are closely clustered together and their solar arrays are positioned in a special low-drag configuration, making the satellites appear visible from the ground just after deployment,\u201d said Lauren Lyons, a SpaceX engineer who co-hosted the company\u2019s webcast of Monday night\u2019s launch. \u201cHowever, once the satellites reach their operational altitude and begin on-station service, their orientation changes and the satellites become significantly less visible.<\/p>\n<p>\u201cWhile it\u2019s really cool to catch a glimpse of those satellites from the ground, they can sometimes be a distraction for astronomers,\u201d Lyons said. \u201cSo on this flight, Starlink is testing an experimental darkening treatment on one satellite in order to further reduce the light reflection off the satellites.\u201d<\/p>\n<p>SpaceX is seeking to strike a balance between astronomers\u2019 concerns and the company\u2019s ambitions for the Starlink network. Skywatchers will gauge the effectiveness of the new experimental coating to determine if it reduces the reflectivity of the satellite, and SpaceX wants to ensure the treatment does not impact the performance of the spacecraft.<\/p>\n<p>\u201cWe also make satellite tracking data available to astronomers so they can better coordinate their observations with our satellites,\u201d Lyons said. \u201cThese measures, along with our work with leading astronomy groups, will enable SpaceX to bring Internet access to underserved and unserved populations around the world without materially impacting the use of the night sky.\u201d<\/p>\n<p>SpaceX says it hopes to begin regional broadband service to Canada and the northern United States with the partially-complete Starlink constellation by the middle of this year, once it has launched 12 Starlink missions. Starlink service for Internet consumers worldwide will come after 24 launches, according to Shotwell.<\/p>\n<p>\u201cTwelve launches gets us connectivity with no gaps down to a latitude of roughly 25 degrees \u2026 And then 24 missions gets us global coverage with no data gaps,\u201d Shotwell said last month. \u201cSo what\u2019s preventing us from providing service? Getting the right number of satellites up in orbit. We will start offering service (mid-2020) because we have those 12 launches.\u201d<\/p>\n<figure id=\"attachment_41738\" aria-describedby=\"caption-attachment-41738\" style=\"width: 900px\" class=\"wp-caption alignnone\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-41738\" src=\"http:\/\/spaceflightnow.com\/wp-content\/uploads\/2019\/11\/starlinknetwork.jpg\" alt=\"\" width=\"900\" height=\"625\" srcset=\"https:\/\/spaceflightnow.com\/wp-content\/uploads\/2019\/11\/starlinknetwork.jpg 900w, https:\/\/spaceflightnow.com\/wp-content\/uploads\/2019\/11\/starlinknetwork-300x208.jpg 300w, https:\/\/spaceflightnow.com\/wp-content\/uploads\/2019\/11\/starlinknetwork-768x533.jpg 768w, https:\/\/spaceflightnow.com\/wp-content\/uploads\/2019\/11\/starlinknetwork-678x471.jpg 678w\" sizes=\"(max-width: 900px) 100vw, 900px\"><figcaption id=\"caption-attachment-41738\" class=\"wp-caption-text\">Artist\u2019s illustration of the distribution of satellites in SpaceX\u2019s Starlink network. Credit: SpaceX<\/figcaption><\/figure>\n<p>SpaceX has not announced pricing for the Starlink service.<\/p>\n<p>\u201cAll I know is you will be far happier with the value of the Starlink service than you are with your current service,\u201d Shotwell said in December. \u201cYou will, for sure, get way more bandwidth for the same price, or way more bandwidth for less \u2026 You\u2019ll be far happier with this. The value will be far greater (than with current Internet service providers).\u201d<\/p>\n<p>She said SpaceX is building about seven Starlink satellites per day at a factory in Redmond, Washington. Low-volume production of SpaceX\u2019s ground user terminals is also underway in California, Shotwell said.<\/p>\n<p>SpaceX is still working out its strategy for commencing Starlink commercial services.<\/p>\n<p>\u201cBetween now and June \u2026 we\u2019re going to have to figure that out,\u201d Shotwell said last month. \u201cWe will do presales like Tesla has done. The initial experience will be bumpy. We\u2019ll have early customers be part of that journey with us. We\u2019re not going to fib and say it\u2019s going to be the best thing ever. When you get service, it\u2019s going to be great. But it will be bumpy for a while.<\/p>\n<p>The U.S. military has a contract with SpaceX to demonstrate the Starlink network\u2019s ability to deliver data to the cockpit of airplanes, the first of what SpaceX hopes will be a lucrative business selling bandwidth to the Defense Department.<\/p>\n<p>\u201cI think we probably will mature as a provider, and it should not be bumpy, really in \u201921. By \u201921, I think we probably will have figured out most of the problems.\u201d<\/p>\n<p>SpaceX is gearing up for at least one more Starlink launch from Cape Canaveral using a Falcon 9 rocket later this month.<\/p>\n<p>But first, the company\u2019s Florida team will perform an in-flight test of the abort system the Crew Dragon commercial crew capsule on the ship\u2019s final demonstration launch before NASA clears SpaceX to launch astronauts to the International Space Station.<\/p>\n<p>The Crew Dragon in-flight abort test will take off from pad 39A at NASA\u2019s Kennedy Space Center aboard a modified Falcon 9 rocket. Once it reaches the stratosphere, the crew capsule \u2014 flying without astronauts this time \u2014 will trigger its launch escape engines to propel itself away from the Falcon 9, verifying the ship\u2019s ability to carry crews away from a failing rocket.<\/p>\n<p><b><i>Email the author.<\/i><\/b><\/p>\n<p><em><strong>Follow Stephen Clark on Twitter: @StephenClark1.<\/strong><\/em><\/p>\n","protected":false},"excerpt":{"rendered":"<p>SpaceX\u2019s Falcon 9 rocket streaks downrange to the northeast from Cape Canaveral Monday night with 60 Starlink satellites for the company\u2019s planned global Internet network. Credit: SpaceX Sixty more satellites for SpaceX\u2019s Starlink global Internet network streaked into orbit Monday night from Cape Canaveral, including one spacecraft to test an experimental dark coating to address [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"inline_featured_image":false,"footnotes":"","_links_to":"","_links_to_target":""},"categories":[2],"tags":[1661,1690,252,291,1736,479,25,316],"class_list":["post-12736","post","type-post","status-publish","format-standard","hentry","category-news","tag-astronomy","tag-astrophysics","tag-broadband","tag-commercial-space","tag-complex-40","tag-falcon-9","tag-launch","tag-spacex"],"acf":[],"_links":{"self":[{"href":"https:\/\/starpath.global\/blog\/wp-json\/wp\/v2\/posts\/12736"}],"collection":[{"href":"https:\/\/starpath.global\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/starpath.global\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/starpath.global\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/starpath.global\/blog\/wp-json\/wp\/v2\/comments?post=12736"}],"version-history":[{"count":0,"href":"https:\/\/starpath.global\/blog\/wp-json\/wp\/v2\/posts\/12736\/revisions"}],"wp:attachment":[{"href":"https:\/\/starpath.global\/blog\/wp-json\/wp\/v2\/media?parent=12736"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/starpath.global\/blog\/wp-json\/wp\/v2\/categories?post=12736"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/starpath.global\/blog\/wp-json\/wp\/v2\/tags?post=12736"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}