Development of a space-based economy, space settlement, and space news
Monthly space news
The following are recent presentations on space-related news, made to the monthly meetings of the North Houston chapter of the National Space Society. Videos are available for recent presentations. Slides for the presentations are saved in pdf format, and can be viewed simply by clicking on the link. However, a few presentations include gif animations, which don’t work in pdf viewers. In that case, the format is a Powerpoint presentation, which you may have to download to view. To see the animations in Powerpoint, you may need to click on the picture, or go to “slide show” mode. Even if you haven’t previously installed Microsoft Powerpoint, you can download and use a read-only version of Powerpoint for free from Microsoft.
Space news, June 5, 2021 (pdf) YouTube video (23 minutes)
The Chinese Mars mission finally sent its lander to the surface, releasing the 529 lb rover, while the orbiter continued its observation mission and relaying data. The US Mars mission ran more extreme altitude, distance, and speed tests for the Mars helicopter acting to scout ahead of the rover's path. At high speed, a software bug led to some control instability. Virgin Galactic test pilots flew the VSS Unity spacecraft to space, although not as high as the traditional Kármán line. The physical basis for the Karman definition of the edge of space is based on ability to achieve aerodynamic flight, ability to maintain a satellite in orbit, and large air temperature changes. 11 recent orbital launches were reviewed, including 4 batches of SpaceX Starlink internet satellites, and some internet competition from new OneWeb satellites. The Falcon/Cargo Dragon resupply mission to the International Space Station was the first in 17 launches this year to use a new booster.
Space News, May 1, 2021 (pdf) YouTube video (26 minutes) Perseverance, NASA's Mars rover, demonstrated the first in-situ resource use in space, proving that O2 can be extracted from the Martian CO2 atmosphere. It extracted enough O2 in an hour for 10 minutes of breathing. Otherwise, Perseverance mostly relayed data and video from the Ingenuity Mars helicopter. The helicopter was very successful, with 4 test flights, and will continue working for at least another month. NASA selected SpaceX Starship as the sole lander for the "Human Landing System" in the Artemis Moon program. This was protested by the other vendors, so progress will be halted for an unknown time for litigation. The first Artemis program landing would still involve the SLS rocket and Orion capsule, and require Starship refueling in Earth orbit. Long term, this could hasten the end of SLS, Orion, and Gateway, so the political decisions may be a bigger hurdle than the technical ones. Astrobotic chose the SpaceX Falcon Heavy as the rocket for its 2023 lunar robotic mission. Blue Origin will start selling tickets for 10 minute suborbital rides starting May 5, following 15 successful tests out of 15. The New Glenn orbital rocket won't be available until late 2022. Northrup Grumman grabs another Intelsat satellite to extend its life with additional propulsion. The International Space Station (ISS) had a busy month, with crews arriving from both Russian and American launches, starting bartered trades of launch seats between Russia and the US. China still expects to land their Mars rover in mid-May. China launched the first module for its new space station, with 10 remaining launches for 2022 completion. China and Russia also formally invited other countries to join their Lunar Research Station. Bill Nelson is confirmed as NASA's next administrator. There were 10 orbital launches since the last meeting.
Space News, April 3, 2021 (pdf) YouTube video (31 minutes) NASA's Perseverance Mars rover has completed initial self tests, analyzed some rocks by zapping them with lasers, and recorded sounds from Mars. A strange green rock has been analyzed, but not yet understood. Perseverance has been scouting out an airfield for Ingenuity, the helicopter it carries. Ingenuity is mainly a technology demo, gathering information for the next design. Benefits of a working helicopter include scouting, faster exploration, and reaching areas inaccessible to rovers or humans. Ingenuity was built quickly with all new technology, including open source software and commercial components like a cell phone processor. With an atmospheric density only 1% of earth, Ingenuity requires large blades spinning very rapidly. 2/3 of the rechargeable battery power is needed just to stay warm at night. Most of the Ingenuity commercial electronics are not radiation hardened. As a result, computations may be incorrect fairly frequently. Circuitry was added to detect problems, and reboot quickly in that case. Inertial navigation is used, coupled with solar tracking and use of a downward-facing camera to match locations with photos. An airfield has been selected based on aerial photos and the up-close inspection. Perseverance is currently deploying the helicopter. The first flight is planned for April 11. Space debris cleanup is getting more critical. Astroscale launched a test of a satellite for finding a dead satellite or rocket body, docking with it, and de-orbiting. The space industry is relieved that it seems space policy will likely remain essentially the same with the new administration, for the first time in 30 years. SpaceX Starship prototype SN11 blew up. Nine recent orbital launches were reviewed, including 216 satellites for internet service by SpaceX (Starlink) and OneWeb.
Space News, March 6, 2021 (pdf) YouTube video (27.5 minutes) 3 robotic mars missions launched in July 2020 all arrived at Mars, after traveling over 300 million miles in 200 days. They were launched by the UAE, China, and the US during a favorable alignment window occurring every 26 months. The UAE and China missions went into orbit around Mars, while NASA's Perseverance Rover landed successfully in the Jezero crater/ancient river delta. The nuclear-powered Perseverance rover, about the size of a car, will drive autonomously to search for ancient life with cameras and multiple instruments, and cache samples on the surface for a future return mission. So far, the rover has been going through self tests, including flexing the robot arm and taking a short drive. The Ingenuity helicopter has not been released yet. There are currently 11 active missions at Mars, including orbiting satellites as well as rovers and a stationary lander. The asteroid Apophis flew close to Earth on Mar 5, and will fly within the orbits of geosynchronous satellites on its next visit in 2029. The government's Space Launch System (SLS), a troubled heavy lift vehicle, will be dropped from the 2024 mission to Europa, in favor of a "proven commercial heavy lift rocket", meaning the Falcon 9 Heavy. A luxury space hotel in orbit in the form of a rotating wheel to achieve artificial lunar gravity has been announced by Orbital Assembly Corporation. The company is actively looking for investors, and produced slick marketing materials. The CEO of Rocket Lab once said he would eat his hat if they ever moved to make their boosters reusable. Now that they are pursuing that, he did eat his hat during a meeting announcing a new, larger rocket, saying "This hat is not tasty". SpaceX continues to put on the best shows on earth, gathering a lot of data during rocket test launches, followed by large explosions: the Starship prototype SN10 blew up spectacularly 8 minutes after a completely successful suborbital test, taking off and landing back on the launch pad. Among the 7 orbital launches since the last meeting, it is now rare news that SpaceX lost a booster instead of recovering it. Just a few years ago, everyone was amazed it was even possible.
Space News, February 6, 2021 (pdf) YouTube video (31 minutes) NASA delays decision on Human Landing System. Delays are not unexpected in any organization under new management, but the 2024 NASA human Moon landing gets even less likely. NASA selects Firefly Aerospace in 6th CLPS award for payloads to the Moon. All 3 robotic missions to Mars (UAE, China, US) are still on track to arrive in February. Virgin Orbit with their hybrid plane/rocket launch system successfully delivers satellites to orbit. SpaceX launches record 143 satellites with one rocket, into sun-synchronous orbit. Organizing 143 satellites was helped by mission aggregators and space tugs. General issues with the expanding small satellite business, including launch vendor positioning and military strategy. What is a sun-synchronous orbit. Starlink now has 1,022 orbiting satellites, 10,000 customers, and now includes some polar orbits with laser crosslinks between satellites. SpaceX is converting 2 deepwater oil rigs into floating spaceports. Space tourism is taking off, with a charity mission in October, Axiom's tourists to the ISS in January, and yet another successful Blue Origin test. Venus life is looking much less likely. Starship SN9 test fails landing again. Recent launches.
Space News, January 9, 2021 (pdf) Chinese lunar sample return (Chang’e 5) update. Japanese Hayabusa 2 asteroid sample return update, with lessons re-learned about our future space-based economy, including not to expect “space freighter captain” to be a real job. Offbeat news on ashes smuggled aboard the ISS for Star Trek’s Scotty, smuggling alcohol and food to space stations, and Space Force now as “guardians of the ... galaxy?”. Recent launches, and a scorecard on launches in 2020.
Space News, December 12, 2020 (pdf) Chinese lunar sample return (Chang’e 5) and the Chinese Lunar Exploration Program (CLEP) in general. Japanese Hayabusa 2 asteroid sample return.. Arecibo observatory collapses. SpaceX Starship protoype SN8 test “puts a crater in the right spot”. SpaceX Starlink gets FCC subsidies over 10 years. Relativity Space raises money, becoming 2nd most valuable venture-backed company. Recent launches include everything from ISS astronauts and cargo, to large spy satellites, and communications satellites the size of a slice of bread.
Space News, November 7, 2020 (pdf) Asteroid Bennu sample collection by OSIRIS-REx. Other asteroid missions past and future.; SpaceX Starlink update. More water found on the Moon. NASA Tipping Point contract. Venus life might be a false alarm. ISS inhabited 20 years continuously. 7 nations joined Artemis accords. Blue Origin New Shepard test. Recent launches.
Space News, October 3, 2020 (pdf) NASA’s Artemis (Moon) plans and treaty issues. Venus might have life. Cubesat launching. Recent launches.
Space News, September 5, 2020 (pdf) SpaceX Starlink update, including use of barges, polar orbit launches and related history of the “most expensive cow in history” in Cuba. SpaceX Starship tests. US Department of Defense selection of primary rocket launch companies. Chinese lunar base plans. Recent launches.
Space News, August 1, 2020 (Powerpoint) 3 missions to Mars launched by UAE, China, US. Launch windows and Hohmann transfer orbits; miscellany. Recent launches. (Click on the animated gifs, especially for the Hohmann transfer orbits, or go to slide show mode)
Space News, July 11, 2020 (pdf) Delayed US Mars Perseverance mission to Mars preview. Starlink and OneWeb updates. Spaceship Neptune: To the stratosphere in a balloon. Zombie satellites return from the graveyard. NASA “Lunar Loo Challenge. “Eau de Space”. A noisy way to light birthday candles. Recent launches.
Space News, June 6, 2020 (pdf) Historic crewed launch to ISS on SpaceX Falcon 9/Crew Dragon. Serious re-usability shown in 8th Starlink launch. SpaceX Starship prototype SN4 explodes. Asteroid near miss. China announces space station in 2 years. Miscellany. Recent launches.
Space News May 2, 2020 (pdf) ISS (International Space Station) crew launch and return. NASA contracts for robotic lunar landings in 2021-2022 by Masten Space Systems, Intuitive Machines, Astrobotic. NASA funding for lunar Human Landing System by Blue Origin/Lockheed Martin/Northrop Grumman, Dynetics/Sierra Nevada, and SpaceX. Starlink update on addressing astronomers concerns on satellite brightness. Recent launches.
Space News, April 4, 2020 (pdf) OneWeb launches 34 more communications satellites, then declares bankruptcy. SpaceX Starlink receives FCC license for 1 million user terminals, which are now a “UFO on a stick”. NASA selects SpaceX for transportation to Lunar Gateway (if it’s ever built). “Space Fence” for tracking satellites and space debris completed. COVID-19 impact. Recent launches
Presentations on space-related topics
Presentations on specific topics related to the development of a space-based economy and settling in space are:
Biosphere 2 and closed ecological systems: systems biology for sustainable life outside earth, and a space settlement prototype 30 years ahead of its time
Biosphere 2 was constructed as a demonstration/test site for prototyping sealed life support systems to support future space colonization, and to better model how earth’s ecosystems work. 8 people were sealed in the 3.14 acre facility for 2 years starting in 1991. It holds the record as the world’s largest and longest-running closed environment test. The facility is still there and open to the public, although it is no longer sealed. The presentation Biosphere 2: A space settlement prototype 30 years ahead of its time (pdf) offers a retrospective on its unique contributions to understanding the complexities of sustaining life outside earth. The presentation was to the AIAA (American Institute of Aeronautics and Astronautics) Annual Technical Symposium (Houston), October 24, 2020. There also a video of the AIAA Biosphere 2 presentation on the Houston AIAA site.
Lunar gateway orbit options
The “lunar gateway” has gone through various name changes over time. If it is built, it will be a small-scale, short term human habitat orbiting the moon (also called “cis-lunar space”). An overview of the issues in choosing an appropriate orbit is given in this Lunar gateway orbit options presentation (Powerpoint) from January, 2019. The presentation includes some animations. To see those, you may need to go into “slide show” mode.
SpaceX’s StarLink and other satellite-based internet services
StarLink is a satellite-based worldwide internet service being built by SpaceX. It was initially envisioned to be based on up to 12,000 Low Earth Orbit (LEO) satellites, although there is now an application to increase this to 30,000 satellites. By comparison, there were only about 5000 satellites in orbit at the time of the first launch. There are other competitors who also are launching large numbers of satellites in the race to provide space-based internet service. This StarLink presentation (Powerpoint) from June, 2019 provides an overview. The presentation includes some animations. To see those, you may need to go into “slide show” mode or click on the picture.