Comparison of SpaceX Starlink with other Space Internet Companies. References on the top right corner.
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Submitted August 21, 2019 at 01:38AM by Dash3Dot1
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Elon Musk on Twitter: Will probably make sense to do [the Starship presentation] when Starship Mk 1 has 3 Raptors, moving body fins & landing gear installed, which is hopefully mid September
https://twitter.com/elonmusk/status/1163889282936967168

Submitted August 21, 2019 at 04:54PM by Appable
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Interview with Dr. Garrett Reisman on „The Space show“ Podcast
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Submitted August 21, 2019 at 02:45PM by Bananas_on_Mars
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<b>Analysis of the Boca Chica "Wing" (Dimensions Deduced)</b>
This started out as just trying to work out the length of the wing, but in the process of doing so I realised that there were more and more things I could measure, until eventually I had the whole wing. If you want to see the full process of figuring this out bit by bit, and also give credit to the DOT tape/truck experts, you can check out the NSF discussion, the start of which is <a href="https://forum.nasaspaceflight.com/index.php?topic=47184.msg1981489#msg1981489">here</a>.There are three images that I used to do this, and which I'll refer to frequently throughout. Fortunately for us, all but one side of the wing is visible in these images, this analysis wouldn't be possible otherwise (thank you @BocaChicaGal!). The three images are:<a href="https://imgur.com/BXwLc4N">Number 1: The wing on the flatbed (side and bottom)</a><a href="https://imgur.com/RI5xKoM">Number 2: The wing on the forklift (side only)</a><a href="https://imgur.com/WxiyOw5">Number 3: The wing on the ground (side and top)</a>If you're impatient or uninterested and you just want to see the end result: <a href="https://imgur.com/RUBHh2U">scale diagram of the final dimensions</a>. Without further ado...As a length reference I've used the red and white tape on the back of the flatbed. This stuff is known as DOT tape, and is supposed to be incredibly standard in terms of the lengths of the segments and the width of the tape itself. It comes in two types: 6/6 and 7/11 - the former has red and white sections each of length 6", while the latter has red sections of length 11" and white sections of length 7". Since the lengths of the coloured sections on the flatbed are the same, it's fair to assume this is 6/6 DOT tape. Also, on a flatbed such as this the width of the tape should be 2" and, sure enough, comparing width to length we find that the tape on the truck is thrice as long as it is thick. As a further confirmation, the truck itself should be 102" wide - I get 104" but for the purpose of pixel counting from a photo it's good enough.Using this benchmark it's straightforward to calculate the thickness of the wing, though we have to account for perspective shrinkage between the back of the truck and the plane of the wing's bottom edge. I do this by measuring the difference between the two planes in the apparent length of a pair of DOT tape sections on the side of the truck. This gives a value of 54.8cm for the thickness through the pivot point. There are a handful of measurements that corroborate this on NSF.Next I want to calculate the width of the wing. To do this I measure the thickness at the point just before the diagonal edge begins (50.6cm), and also the thickness at the right hand edge (31.8cm). There's actually a bevel on the right hand side of the wing, so I measure just before this point. Using the trapezoid formed by the 54.8cm and 50.6cm measurements I can calculate the taper on the thickness of the wing as 2.6°. This tells me how wide the wing needs to be from the pivot to the point at which the bevel begins in order to reach a thickness of 31.8cm, which is 249.4cm.To calculate the total width I have to fudge it a little bit because of the bevel, I actually measure the length of the diagonal edge from the start of the bevel to the far edge (18.7cm), but because it's such a short distance the error due to the angle of the diagonal section will be quite negligible overall. Then I measure the the distance from the cylindrical edge to the pivot point, add the three widths together and get 290.6cm. Similarly, I calculate the width of the diagonal section to be 222.6cm.Moving to the second image, I can use the thickness measurement to calculate the length of the wing, and also the projection length of the diagonal edge - 943.7cm and 144.3cm respectively. This gives a gross length for the wing of 1088cm.Using this measurement of 144.3cm, along with the width of 222.6cm, we can calculate the angle…

Astrobotic will launch HAKUTO-R Lunar lander on Falcon 9
https://mobile.twitter.com/HAKUTO_Reboot_e/status/1164367492770226176

Submitted August 22, 2019 at 04:54PM by 675longtail
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SpaceX Falcon 9 booster spotted in Southern California on journey to Florida
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Submitted August 22, 2019 at 03:54PM by CProphet
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Momentus To Provide In-Space Transportation Service to its Customers On SpaceX SmallSat Rideshare Launch
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Submitted August 22, 2019 at 08:39PM by brickmack
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[OC] Cislunar space & Mars shipping costs with Starship
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Submitted August 23, 2019 at 02:01AM by eswak
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Ovzon cancels 2021 Falcon Heavy launch - Ovzon 3 satellite will now launch on an Ariane V
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Submitted August 24, 2019 at 12:14PM by ModeHopper
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Actually, NASA is looking at all options for the Moon—including prizes
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Submitted August 24, 2019 at 08:58PM by Jeramiah_Johnson
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Elon Musk on Twitter: Looks like @SpaceX Starhopper flight may be as soon as Monday. FAA support is much appreciated!
https://twitter.com/elonmusk/status/1165377786338406400

Submitted August 25, 2019 at 12:14AM by glockenspielcello
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@BocaChicaGal: Sheriff Deputy just hand delivered this notice to me. I guess we will be outside watching the hop.
https://twitter.com/BocaChicaGal/status/1165405382925332481

Submitted August 25, 2019 at 02:05AM by s0x00
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<b>r/SpaceX official CRS-18 Release, Deorbit and Recovery Thread</b>
<a href="/#%20MC%20//%20section%20intro"></a>Welcome to the <a href="/r/SpaceX">r/SpaceX</a> official CRS-18 Release, Deorbit and Recovery ThreadI'm <a href="/u/Hitura-nobad">u/Hitura-nobad</a> hosting the release and recovery of the CRS-18 Dragon spacecraft!<a href="/#%20MC%20//%20section%20events"></a>TimelineTimeUpdate<a href="/#%20MC%20//%20row%200"></a> T-2d 0hThread going live<a href="/#%20MC%20//%20section%20viewing"></a>About The RecoverySpaceX is going to conclude the CRS-18 Cargo Dragon mission to the International Space Station on August 27th with the Deorbit and Recovery of this spacecraft. Dragon will splash down in the Pacific Ocean approximately 482 km southwest of Los Angeles. The west coast dragon recovery ship NRC Quest will be waiting at the landing zone to pick dragon up and bring it back to the harbor.<a href="/#%20MC%20//%20section%20stats"></a>Payloads on Dragon C108.3<a href="https://www.nasa.gov/press-release/nasa-tv-to-air-us-cargo-ship-departure-from-space-station">Source: NASA</a><strong>Bio-Mining in Microgravity</strong>The <a href="https://www.nasa.gov/mission_pages/station/research/experiments/explorer/Investigation.html?#id=7566">Biorock</a> investigation provides insight into the physical interactions of liquid, rocks and microorganisms in microgravity and improving the efficiency and understanding of mining materials in space. Bio-mining eventually could help explorers on the Moon or Mars get needed materials on site, lessening the need for precious resources from Earth and reducing the amount of supplies explorers must take with them.<strong>Mechanisms of Moss in Microgravity</strong><a href="https://www.nasa.gov/mission_pages/station/research/experiments/explorer/Investigation.html?#id=7892">Space Moss</a> compares mosses grown aboard the space station with those grown on Earth to determine how microgravity affects its growth, development, and other characteristics. Tiny plants without roots, mosses need only a small area for growth, an advantage for their potential use in space and future bases on the Moon or Mars. This investigation also could yield information that aids in engineering other plants to grow better on the Moon and Mars, as well as on Earth.<strong>Improving Tire Manufacturing from Orbit</strong>The <a href="https://www.nasa.gov/mission_pages/station/research/experiments/explorer/Investigation.html?#id=7716">Goodyear Tire</a> investigation uses microgravity to push the limits of silica fillers for tire applications. A better understanding of silica morphology and the relationship between silica structure and its properties could provide improvements for increased fuel efficiency, which would reduce transportation costs and help to protect Earth’s environment.<a href="/#%20MC%20//%20section%20mission"></a>Current Recovery FleetVesselRoleStatus<a href="https://www.spacexfleet.com/nrc-quest">NRC Quest</a>Dragon Recovery ShipOn route to the recovery zone<a href="/#%20MC%20//%20section%20landing"></a>Recovery TimelineTime (Approximate)Event27 August, 14:15 UTCstart of NASA-TV coverage for the release27 August, 14:42 UTCRelease from the SSRMS (Robotic Arm)27 August, 19:22 UTCDeorbit Burn (No Video Coverage)27 August, 20:21 UTCSplashdown (No Video Coverage)<a href="/#%20MC%20//%20section%20resources"></a>Links & Resources<a href="https://www.marinetraffic.com">MarineTraffic</a> - Useful when ships are closer to land!<a href="https://www.google.com/maps/d/viewer?hl=en&mid=17sTdDuaLN-EJeuALqkvhM2hULM5lvIKZ&ll=32.12289698742197%2C-121.25001614999996&z=8">Recovery Zone Map</a> - Thanks to <a href="/u/Raul74Cz">u/Raul74Cz</a><a href="https://twitter.com/SpaceXFleet">SpaceXFleet Updates</a> - Twitter Updates!<a href="https://www.spacexfleet.com/">SpaceXFleet.com</a> - SpaceXFleet Information!<a href="/#%20MC%20//%20section%20participate"></a>Participate in the discussion!Please post small launch updates, discussions, and…

<b>Starhopper 200m Hop Official Discussion & Updates Thread!</b>
<a href="/#%20MC%20//%20section%20intro"></a>About the MissionHello, I'm <a href="/u/ModeHopper">u/ModeHopper</a> and tomorrow is hop day (hopefully)! I will be your host for this, the third SpaceX hop of 2019. If you have updates or resources that you think should be added to this post the most immediate way to contact me is on Twitter @HopperMode, alternatively you can leave them in the comments below and I will check back periodically in the lead up to the launch.OverviewFor this launch SpaceX will attempt it's second untethered hop of the prototype launch vehicle colloquially known as <em>Starhopper</em> from their Boca Chica facility in Texas. The vehicle is expected to ascend using it's single Raptor engine to an altitude of 200m before performing a controlled landing. The primary aim of the mission is to test the flight dynamics of both the vehicle and the Raptor engine to better inform decisions concerning their next generation launch vehicle <em>Starship</em>. Previously, Starhopper performed a short tethered hop and a 20m untethered hop - this will be the final flight for the vehicle before it is retired and superseded by the Mk.1 and Mk.2 orbital prototype Starships under construction in Boca Chica (Tx.) and Cocoa (Fl.).SchedulePrimary launch window opens: <strong>Monday, August 26 at 21:00 UTC (16:00 CDT).</strong>Primary launch window closes: <strong>Monday, August 26 at 21:15 UTC (16:15 CDT).</strong>Scrub Counter<strong>0</strong> Scrubs &#129310;Facts and Stats3rd hop of the Starhopper vehicle.2nd untethered hop of the Starhopper vehicle.6th production Raptor engine ever made.This will be the longest duration flight of a Raptor engine to date.Launch VehicleTypeNameLocationFirst stage"Starhopper" Test UnitSpaceX Boca Chica, TexasSecond stageN/AN/A    Live UpdatesMission StateCurrently GO for launch, expected at 21:00 UTC on Monday August 26<a href="/#%20MC%20//%20section%20events"></a>TimelineTimeUpdate<a href="/#%20MC%20//%20row%200"></a> T-1d 4hThread goes live<a href="/#%20MC%20//%20section%20viewing"></a>Launch SitePlaceLocationCoordinates &#127760;Sunrise &#127749;Sunset &#127751;Time zone &#8986;Launch site<a href="https://en.wikipedia.org/wiki/SpaceX_South_Texas_Launch_Site">SpaceX South Texas Launch Site</a><a href="https://tools.wmflabs.org/geohack/geohack.php?pagename=SpaceX_South_Texas_Launch_Site&params=25.997_N_97.157_W_">25° 59′ N, 97° 9′ W</a>07:0719:56UTC-5Landing site<a href="https://en.wikipedia.org/wiki/SpaceX_South_Texas_Launch_Site">SpaceX South Texas Landing Pad</a><a href="https://tools.wmflabs.org/geohack/geohack.php?pagename=SpaceX_South_Texas_Launch_Site&params=25.997_N_97.157_W_">25° 59′ N, 97° 9′ W</a>07:0719:56UTC-5Weather - Boca Chica, Tx. 1 2Launch windowWeatherTemperatureWindProb. of rainVisibilityUV IndexProb. of weather scrubPrimary launch window&#127780;&#65039; <em>Partly Cloudy</em>&#127777;&#65039; <em>33°C (91°F)</em>&#127788;&#65039; <em>19 mph SSE</em>&#128167; <em>10%</em>&#128064; <em>8 mi</em><em>Extreme</em>&#128721; <em>Very Low</em>Sources: 1. <a href="https://weather.com/weather/today/l/14f156cf3bef21428476e88a245155c0af9eac08534e25960539154a8f2cef7b">www.weather.com</a> 2. <a href="https://forecast.weather.gov/MapClick.php?lat=25.995480000000043&lon=-97.16547999999995#.XWKiyfx7mUk">NOAA</a><a href="/#%20MC%20//%20section%20stats"></a>    Watch &#128308; LIVEYouTube &#128250;LinkNote<a href="https://www.youtube.com/watch?v=cn5j_E2CcqE">South Padre Island Streamt</a>Live 24/7<a href="https://www.spadre.com/default.htm">South Padre Island Stream - direct</a>Live 24/7<a href="https://www.youtube.com/watch?v=kqZDeKHDwb4">LabPadre Stream</a>Live 24/7<a href="https://www.youtube.com/channel/UC6uKrU_WqJ1R2HMTY3LIx5Q">Everyday Astronaut - livestream</a>Not yet liveRelays &#128225;TBA<a href="/#%20MC%20//%20section%20mission"></a>    Useful ResourcesEssentialsLinkSource<a href="https://twitter.com/BocaChicaGal…

[PDF] The FAA permit for SpaceX's 150m Starship hopper test has been posted!
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Submitted August 26, 2019 at 03:36PM by rulewithanionfist
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Milestone Achieved! SpaceX to Launch Astranis’s First Commercial Satellite Into Orbit As Early As Next Year
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Submitted August 26, 2019 at 06:08PM by ethan829
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Elon on Starhopper Scrub: Igniters need to be inspected. We will try again tomorrow same time.
https://twitter.com/elonmusk/status/1166141136198488064

Submitted August 27, 2019 at 03:20AM by FutureMartian97
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Watertowers CAN fly!!!
https://www.youtube.com/watch?v=bYb3bfA6_sQ

Submitted August 28, 2019 at 12:04AM by Leggo15
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