Monday, September 30, 2019

NASA Selects New Technology Partnerships for Moon and Mars Explorations


Astrobotic is one of 14 companies selected for NASA’s Tipping Point solicitation. This illustration depicts CubeRover, an ultra-light, modular and scalable commercial rover.  Credits: Astrobotic/Carnegie Mellon University
Ken Kremer -- SpaceUpClose.com & RocketSTEM – 29 September 2019

KENNEDY SPACE CENTER, FL – NASA has announced the selection of 14 American companies for technology partnerships in the agency’s ‘Tipping Point’ program to help enable the agency’s Moon to Mars exploration approach and return to our nearest neighbor and land astronauts on the Moon by 2024 under the Project Artemis program.

The selections address technology areas such as cryogenic propellant production and management, sustainable energy generation, storage and distribution, efficient and affordable propulsion systems, autonomous operations, rover mobility, and advanced avionics, says NASA.

“This investment in the U.S. space industry, including small businesses across the country, will help bring the technologies to market and ready them for use by NASA.”

The individual contract awards range in value from 1.3 million to 10 million and have a cobcined overall value of about $43.2 million as part of NASA’s fourth competitive Tipping Point solicitation

“These promising technologies are at a ‘tipping point’ in their development, meaning NASA’s investment is likely the extra push a company needs to significantly mature a capability,” said Jim Reuter, associate administrator of NASA’s Space Technology Mission Directorate (STMD), in a statement. 

“These are important technologies necessary for sustained exploration of the Moon and Mars. As the agency focuses on landing astronauts on the Moon by 2024 with the Artemis program, we continue to prepare for the next phase of lunar exploration that feeds forward to Mars.”

Two of the companies selected for ‘Tipping Point’ technology development awards and also been selected by NASA to develop commercial robotic lunar landers – namely Astrobotic and Intuitive Machines as part of NASA’s Commercial Lunar Payload Services, or CLPS, program.


Here is a NASA’s list of selected proposals, organized by technology area, are: 


Cryogenic Propellant Production and Management 


•   Blue Origin LLC of Kent, Washington, $10 million


A ground demonstration of hydrogen and oxygen liquefaction and storage, representing rocket and spacecraft propellant that could be produced on the Moon. The demonstration could help inform a large-scale propellant production plant suitable for the lunar surface.


•   OxEon Energy LLC of North Salt Lake, Utah, $1.8 million


OxEon Energy will work with the Colorado School of Mines to integrate an electrolysis technology to process ice and separate the hydrogen and oxygen. The molecules could then be cooled to produce fuel for cislunar transport. This technology could provide a flexible and scalable solution for future in-situ resource utilization operations on the Moon.


•   Skyre Inc. of East Hartford, Connecticut, $2.6 million


Skyre, also known as Sustainable Innovations, along with partner Meta Vista USA LLC, will develop a system to make propellant from permanently frozen water located at the Moon’s poles, including processes to separate the hydrogen and oxygen, keep the product extremely cold and use hydrogen as a refrigerant to liquefy oxygen.


•   SpaceX of Hawthorne, California, $3 million

SpaceX will collaborate with NASA’s Marshall Space Flight Center in Huntsville, Alabama, to develop and test coupler prototypes – or nozzles – for refueling spacecraft such as the company’s Starship vehicle. A cryogenic fluid coupler for large-scale in-space propellant transfer is an important technology to aid sustained exploration efforts on the Moon and Mars.

Sustainable Energy Generation, Storage and Distribution

•   Infinity Fuel Cell and Hydrogen Inc. of Windsor, Connecticut, $4 million

The company will collaborate with NASA’s Johnson Space Center in Houston to develop a scalable, modular and flexible power and energy product that utilizes new manufacturing methods to reduce cost and improve reliability. The technology could be used for lunar rovers, surface equipment and habitats.

•   Paragon Space Development Corporation of Houston, $2 million

Paragon Space Development Corporation will work with Johnson and NASA’s Glenn Research Center in Cleveland to develop an environmental control and life support system as well as a thermal control system for lunar missions that maintain acceptable operating temperatures throughout the Moon’s day and night cycle. The design of these systems could be adapted for crewed missions to Mars.

•   TallannQuest LLC of Sachse, Texas, $2 million

Working with NASA’s Jet Propulsion Laboratory in Pasadena, California, the company, also known as Apogee Semiconductor, will develop a flexible, radiation-hardened switching power controller capable of being configured based on a mission’s power needs. This technology could be used for missions to the Moon, Mars, Jupiter’s moon Europa, and other destinations.

Efficient and Affordable Propulsion Systems

•   Accion Systems Inc. of Boston, $3.9 million

The first interplanetary CubeSats, NASA’s MarCO-A and B, used a set of cold gas thrusters for attitude control and course corrections during their cruise to Mars, alongside the Mars InSight lander. Accion and JPL will partner to mature a propulsion system to demonstrate the same capabilities as those required for the MarCO mission, but with a smaller and lighter system that uses less power. The propulsion system could enable more science opportunities with these small, flexible platforms.

•   CU Aerospace LLC of Champaign, Illinois, $1.7 million

CU Aerospace, NearSpace Launch and the University of Illinois at Urbana-Champaign will build and test a 6-unit CubeSat equipped with two different propulsion systems. These systems were developed with NASA Small Business Innovation Research (SBIR) funding and offer high performance, low cost and safe pre-launch processing. The company plans to deliver the flight-ready CubeSat to NanoRacks for launch and deployment.

•   ExoTerra Resource LLC of Littleton, Colorado, $2 million

ExoTerra will build, test and launch a 12-unit CubeSat with a compact, high impulse solar electric propulsion module. Once flight-ready, the system will be demonstrated in-space as the CubeSat moves from low-Earth orbit to the radiation belts surrounding Earth. This small electric propulsion system could open up the inner solar system for targeted science exploration missions, using affordable spacecraft that range from 44 to 440 pounds.

Autonomous Operations

•   Blue Canyon Technologies Inc. of Boulder, Colorado, $4.9 million

As access to space increases, so does the need for ground resources, such as tracking stations. With an in-space demonstration, Blue Canyon Technologies will mature an autonomous navigation software solution for SmallSats and CubeSats so they can traverse space without “talking” to Earth.

Rover Mobility

•   Astrobotic Technology of Pittsburgh, $2 million

Astrobotic and Carnegie Mellon University will work with JPL and NASA’s Kennedy Space Center in Florida to develop small rover “scouts” that can host payloads and interface with multiple large landers. This project received previous NASA funding through SBIR awards. The new partnership will develop more mature payload interfaces and increase rover capabilities.

Advanced Avionics

•   Intuitive Machines LLC of Houston, $1.3 million

Development of a spacecraft vision processing computer and software to reduce the cost and schedule required for deploying optical, or laser, navigation capabilities on government and commercial missions.

•   Luna Innovations of Blacksburg, Virginia, $2 million

Luna Innovations is partnering with Sierra Nevada Corporation, ILC Dover and Johnson to prove the viability of sensors that monitor the structural health and safety of inflatable space habitats located in orbit or on the surface of other worlds.

“Through firm-fixed-price contracts, STMD will make milestone payments over a performance period of up to 36 months. Each industry partner is required to contribute a minimum percent, based on the company’s size, of the total cost for each project.

STMD develops transformative space technologies to enable future missions. Tipping Point projects are managed by programs within STMD and in some cases include collaborations with NASA centers.”

“NASA’s Artemis lunar exploration program includes sending a suite of new science instruments and technology demonstrations to study the Moon, landing the first woman and next man on the lunar surface by 2024, and establishing a sustained presence by 2028. The agency will leverage its Artemis experience and technologies to prepare for the next giant leap – sending astronauts to Mars.”
…...
NASA’s Orion crew capsule for the first Artemis lunar mission has completed major assembly for the Artemis 1 mission is seen here in the manufacturing facility at the Neil Armstrong Operations and Checkout Building at NASA’s Kennedy Space Center in Florida in July 2019.  Credit: Ken Kremer/kenkremer.com/spaceupclose.com
NASA is developing the SLS rocket and Orion deep space capsule to send our astronauts on journey’s back to the Moon and on to Mars. 

Watch for Ken’s continuing onsite coverage of NASA, SpaceX, ULA, Boeing, Lockheed Martin, Northrop Grumman and more space and mission reports direct from the Kennedy Space Center, Cape Canaveral Air Force Station, Florida and Wallops Flight Facility, Virginia.

Stay tuned here for Ken's continuing Earth and Planetary science and human spaceflight news: www.kenkremer.com –www.spaceupclose.com – twitter @ken_kremer – email: ken at kenkremer.com

Dr. Kremer is a research scientist and journalist based in the KSC area, active in outreach and interviewed regularly on TV and radio about space topics.

………….

Ken’s photos are for sale and he is available for lectures and outreach events

Sunday, September 29, 2019

Japanese Cargo Spaceship Successfully Joins Space Station - Home to 9 Humans

The Japanese HTV-8 cargo vehicle captured by the space station’s Canadarm2 robotic arm at 7:12 am EDT on Saturday Sept. 28, 2019.   Credit: NASA
Ken Kremer -- SpaceUpClose.com & RocketSTEM – 28 September 2019

CAPE CANAVERAL, FL –  Following a belated but spectacular nighttime blastoff on Tuesday, Sept. 24 and a four day orbital chase Japan’s unpiloted HTV-8 cargo freighter arrived at the International Space Station (ISS) Saturday morning, Sept. 28 and was attached to the complex after grappling by NASA astronauts maneuvering Canada’s robotic arm – capping a hugely busy week of space action that ends with 9 humans on board !

HTV-8 delivers 4 tons of science and supplies including critical new batteries for the stations power supply loaded on board.  

Using the station’s 57-foot-long robotic arm, Canadarm2, Expedition 60 Flight Engineer Christina Koch of NASA, backed up by her NASA crewmate Andrew Morgan, operated the arm from the station’s cupola to capture the 12-ton spacecraft at 7:12 a.m. EDT (1112 GMT)  today as it approached from below. The vehicles were soaring 262 miles (422 kilometers) above Angola and southern Africa at the time of grappling

Flight Engineer Luca Parmitano of ESA (European Space Agency) assisted by monitoring HTV-8 systems during its approach to the station.

"What you all have done is a testament to what we can accomplish when international teams work together towards a common goal," Koch radioed back to NASA Mission Control in Houston.   "We're honored to have Kounotori on board, and look forward to a successful and productive mission together."

Robotic ground controllers then completed the installation of the Japan Aerospace Exploration Agency’s Kounotori H-II Transfer Vehicle 8 (HTV-8) by maneuvering the arm and berthing the vehicle onto the Earth-facing side of the stations Harmony module at 10:09 a.m. EDT. 

All the operations were carried live on NASA TV.

The Japanese HTV-8 cargo vehicle during installation on Saturday Sept. 28, 2019.  Credit: NASA TV
On Wednesday, Sept. 25 a new multinational trio of space flyers aboard the Russian Soyuz MS-15 spaceship blasted off at 9:57 a.m. EDT (6:57 p.m. Kazakhstan time) from the Baikonur Cosmodrome in Kazakhstan with NASA astronaut Jessica Meir, Oleg Skripochka of the Russian space agency Roscosmos, and the first space traveler from the United Arab Emirates (UAE), Hazzaa Ali Almansoori. 

The orbiting outpost is now temporarily home to 9 humans from 4 countries for the next week !! - living and working peacefully in space cooperatively for all humanity.
NEW HOME IN SPACE: Screen shot of 9 Humans aboard #ISS Sept 25, 2019. After launch, docking and hatch opening NASA’s Jessica Meir, Roscosmos’ Oleg Skripochka and Roscosmos Spaceflight Participant Hazzaa Ali Almansoori arrive at the International Space Station after 4-orbit flight beginning 957 AM EDT. During welcome ceremony, the newest station residents greeted by astronauts Nick Hague, Andrew Morgan, Christina Koch and Luca Parmitano along with cosmonauts Alexey Ovchinin and Alexander Skvortsov. This is Meir's and Almansoori’s first spaceflight and Skripochka’s third.  Credit: NASA TV/Ken Kremer/Spaceupclose.com
The ISS is also now host to five visiting vehicles – including Japan’s HTV-8 cargo craft with Russia’s Progress 73 resupply ship and a trio of Soyuz crew ships; MS-12, MS-13 and MS-15.   
Sept. 28, 2019: International Space Station Configuration. Five spaceships are attached to the space station including Japan’s HTV-8 cargo craft with Russia’s Progress 73 resupply ship and Soyuz MS-12, MS-13 and MS-15 crew ships.   Credit: NASA
The HTV-8 adventure began when the Japan Aerospace Exploration Agency (JAXA) H-IIB rocket carrying the cargo ship launched at 12:05 p.m. EDT Tuesday, Sept. 24 (1:05 a.m. Sept. 25 in Japan) from the Tanegashima Space Center in southern Japan.

The JAXA HTV-8 cargo freighter is packed with over four tons of crew supplies, station hardware and new science experiments. 

This is the 8th Japanese HTV resupply ship to launch to the ISS. Among the cargo are six new Lithium-ion batteries that will be swapped out for old nickel-hydrogen batteries as part of the ISS power supply system during astronaut spacewalks in October.
Japan’s HTV-8 cargo craft launches atop the H-IIB rocket at 12:05 p.m. EDT Tuesday, Sept. 24 (1:05 a.m. Sept. 25 in Japan) from the Tanegashima Space Center in southern Japan. Credit: NASA TV
“Named Kounotori, meaning “white stork” in Japanese, the craft delivered six new lithium-ion batteries and corresponding adapter plates that will replace aging nickel-hydrogen batteries for two power channels on the station’s far port truss segment. The batteries will be installed through a series of robotics and spacewalks the station’s crew members will conduct later this year,” said NASA.

Cutaway diagram of Japanese HTV-8 cargo ship. Credit: NASA

“Additional experiments on board HTV-8 include an upgrade to the Cell Biology Experiment Facility (CBEF-L), a small-sized satellite optical communication system (SOLISS), and a payload for testing the effects of gravity on powder and granular material (Hourglass).”

Overall Almansoori is the 10th spaceflight participant - under contracts with Roscosmos - and the first since 2009. 

239 people from 19 countries have now visited the International Space Station.
239 people from 19 countries have now visited the International Space Station.  Credit: NASA
Watch for Ken’s continuing onsite coverage of NASA, SpaceX, ULA, Boeing, Lockheed Martin, Northrop Grumman and more space and mission reports direct from the Kennedy Space Center, Cape Canaveral Air Force Station, Florida and Wallops Flight Facility, Virginia.

Stay tuned here for Ken's continuing Earth and Planetary science and human spaceflight news: www.kenkremer.com –www.spaceupclose.com – twitter @ken_kremer – email: ken at kenkremer.com

Dr. Kremer is a research scientist and journalist based in the KSC area, active in outreach and interviewed regularly on TV and radio about space topics.
………….
Ken’s photos are for sale and he is available for lectures and outreach events

Friday, September 27, 2019

SLS Core Stage Pathfinder Arrives Kennedy Space Center to Support Artemis Moon Program: Photos


NASA’s Pegasus barge transporting the Space Launch System core stage pathfinder arrived at the Kennedy Space Center in Florida on Sept. 27, 2019 for a month of critical testing inside the VAB after shipping from NASA Stennis in Mississippi.  Credit: Ken Kremer/kenkremer.com/spaceupclose.com
Ken Kremer -- SpaceUpClose.com & RocketSTEM – 27 September 2019

KENNEDY SPACE CENTER, FL – The 21 story tall core stage pathfinder vehicle for NASA’s Space Launch System (SLS) megarocket arrived at the Kennedy Space Center (KSC) in Florida on the agency’s upgraded Pegasus barge under sunny skies this afternoon, Sept. 27, for about 4 weeks of critical testing and stacking exercises in support of the Artemis moon exploration program aimed at landing US astronauts on the lunar south pole by 2024. 

Pegasus and Pathfinder sailed into the Turn Basin at Kennedy about 3 p.m. EDT today after being towed by a pair of ocean-going and river-going tugboats for a nearly 1000-mile and week-long journey from NASA’s Stennis Space Center in Mississippi to KSC, and docked around 3:45 p.m.

Technicians plan to be offload the 212-foot long Pathfinder from the 310-foot-long Pegasus barge on Monday, Sept. 30 and move it a short distance to the iconic Vehicle Assembly Building (VAB) for a month of maneuvering and  stacking practice before the first real SLS core stage arrives sometime in mid-2020 for eventual launch on the Artemis 1 mission. 

Media including Space UpClose were invited to attend both today and Monday. Watch our on site coverage from today and upcoming next week. 
NASA’s Pegasus barge transporting the Space Launch System core stage pathfinder arrived at the Kennedy Space Center in Florida on Sept. 27, 2019 is towed by 2 tugboats and sails past the launch site at Launch Complex 39B. It will undergo a month of critical testing inside the VAB after shipping from NASA Stennis in Mississippi.  Credit: Ken Kremer/kenkremer.com/spaceupclose.com
Football field sized Pegasus was towed into Port Canaveral channel and sailed past Jetty Park pier around 7:30 a.m. this morning. It briefly docked at the middle basin where the two ocean-going tugboats  were swapped out for two river-going tugboats- named Termite and American.

By 10 a.m. the fleet of ships were on the way and I observed them passing through Canaveral Lock around 10:30 a.m. Friday, Sept 27 after they passed by the SpaceX recovery fleet for Falcon rockets and Crew Dragons.

NASA’s Pegasus barge transporting the Space Launch System core stage pathfinder is towed through Cape Canaveral Lock at Port Canaveral on the journey to the turn basin at the Kennedy Space Center in Florida on Sept. 27, 2019. It is towed by 2 tugboats.  It will undergo a month of critical testing inside the VAB after shipping nearly 1000 miles from NASA Stennis in Mississippi.  Credit: Ken Kremer/kenkremer.com/spaceupclose.com
Thereafter Pegasus and Pathfinder turned north on the Banana River -accompanied by a KSC tracking ship and heading towards inland water ways to KSC Launch Complex 39 and the VAB. 

The inland path was dredged decades ago by NASA to open up access to the VAB at the KSC Turn Basin and Press site.  

NASA’s Pegasus barge transporting the Space Launch System core stage pathfinder is towed through Cape Canaveral Lock at Port Canaveral on the journey to the turn basin at the Kennedy Space Center in Florida on Sept. 27, 2019. It is towed by 2 tugboats.  It will undergo a month of critical testing inside the VAB after shipping nearly 1000 miles from NASA Stennis in Mississippi.  Credit: Ken Kremer/kenkremer.com/spaceupclose.com

Pegasus followed the same route used by NASA vessels decades earlier to ship Apollo moon rocket stages and Space Shuttle External tanks and solid rocket boosters.
NASA’s Pegasus barge arrives at Kennedy Space Center transporting the Space Launch System core stage pathfinder on Sept. 27, 2019 - and docks at the turn basin aided by 2 tugboats  after towing from NASA Stennis in Mississippi.  Credit: Ken Kremer/kenkremer.com/spaceupclose.com
Pegasus is NASA’s one of a kind and football field sized barge used to transport the space vehicle hardware between NASA centers for testing and eventually to the launch site at the Kennedy Space Center in Florida.  

The SLS core stage pathfinder is a full-scale mockup test article that is identical to the core stage in shape, size and weight.  But it is built from stainless steel and has wire rim replica engine placeholders. 

The SLS core stage pathfinder was transported from NASA’s Stennis Space Center in Mississippi where it recently completed fit check testing for the upcoming ‘green run’ test of the first real SLS core stage for the Artemis 1 mission. 

NASA will conduct a full duration ‘green run’ engine fire test of the completed core stage at Stennis to fully confirm its readiness for flight on Artemis 1. But that test will require six months of intense  work by NASA and contractor teams.
NASA’s Pegasus barge transporting the Space Launch System core stage pathfinder arrived at the Kennedy Space Center in Florida on Sept. 27, 2019 is towed by 2 tugboats and sails past the launch site at Launch Complex 39B. It will undergo a month of critical testing inside the VAB after shipping from NASA Stennis in Mississippi.  Credit: Ken Kremer/kenkremer.com/spaceupclose.com
The pathfinder hardware now arrived at KSC will be used by NASA engineers and contractors for the next four week to practice stacking the hardware in the VAB High Bay 3 using the same procedures needed to stack the real hardware for the Artemis I mission.
NASA’s Pegasus barge arrives at Kennedy Space Center transporting the Space Launch System core stage pathfinder on Sept. 27, 2019 - and docks at the turn basin aided by 2 tugboats after towing from NASA Stennis in Mississippi. Pathfinder will be moved to VAB at left on Sept. 30 for testing and fit checks.  Credit: Ken Kremer/kenkremer.com/spaceupclose.com
“The pathfinder, though not actual flight hardware, will provide the SLS program, Exploration Ground Systems (EGS) team with the opportunity to practice stacking maneuvers and certify the new system inside the Vehicle Assembly Building (VAB) High Bay 3 before Artemis flight hardware arrives next year,” say NASA officials. 

“Over the next several months, pathfinder will be used to validate ground support equipment and demonstrate how the core stage will be integrated in the VAB – the same process the actual core stage will undergo when being processed for Artemis I.”

The pathfinder exercises will be completed by Oct 31. 
Pegasus barge seen in the distance while towed along the Banana River passes space history past and present with NASA Space Shuttle replica above at Kennedy Space Center Visitor Complex and SpaceX rocket recovery hardware below in Port Canaveral- in this elevated view from Exploration Tower. Credit: Ken Kremer/kenkremer.com/spaceupclose.com
Pegasus barge seen in the distance passes below VAB while towed along the Banana River on Sept 27, 2019 on the way to docking at turn basin near VAB at the Kennedy Space Center - in this elevated view from Exploration Tower. Credit: Ken Kremer/kenkremer.com/spaceupclose.com
The teams will practice rolling the pathfinder off Pegasus and into the VAB. Crane crews will then lift it vertically for placement into High Bay 3  - minus the Mobile Launcher which currently resides atop Launch Complex 39B. 

After years of effort and much delay engineers at NASA’s Michoud Assembly Facility in New Orleans have finally completed the assembly of the main structural components of the first core stage for the agency’s mammoth Space Launch System (SLS) Moon rocket

Boeing workers attached the last of five sections of the 212-foot-tall core stage on Sept. 19 – namely the bottom engine section which is one of the most complicated pieces of hardware for the SLS rocket and has been problematic to design and build an caused many delays.


NASA’s Pegasus barge is slated to transport the Space Launch System core stage pathfinder to the Kennedy Space Center in Florida on Sept. 27, 2019 from NASA Stennis. Seen here Pegasus is ready to haul an SLS LOX structural test article on June 28, 2019 from NASA Michoud to NASA Marshall for structural testing. Credit: Ken Kremer/kenkremer.com/spaceupclose.com
The SLS core stage is the largest rocket stage the agency has built since the Saturn V that sent Apollo astronauts to the Moon.  It will produce 2 million pounds of thrust powered by four RS-25 engines fueled by liquid hydrogen and liquid oxygen.

The SLS-1 core stage will propel the Artemis I mission on the first integrated flight of the SLS rocket and NASA’s Orion deep space human spacecraft to the Moon – as soon as late 2020 but more likely in early 2021.

The next step this fall is installation of the four RS-25 engines to the base of the engine section by lead contractor, Aerojet Rocketdyne, and connect them to the main propulsion systems inside the engine section.

The engine section “is the attachment point for the four RS-25 rockets and the two solid rocket boosters that produce a combined 8.8 million pounds of thrust to send Artemis I to space.” 

“In addition, the engine section includes vital systems for mounting, controlling and delivering fuel from the stage’s two liquid propellant tanks to the rocket’s engines.” 

The RS-25 engine installation by the Aerojet-Rocketdyne team will take several months with completion expected in December. 

Thereafter the core stage will be shipped on the Pegasus barge to NASA Stennis Space Center to carry out the Green Run testing involving a full duration engine test to qualify the stage for launch on the Artemis 1 mission.



NASA’s Pegasus barge arrives at Kennedy Space Center transporting the Space Launch System core stage pathfinder on Sept. 27, 2019 - and docks at the turn basin aided by 2 tugboats after towing from NASA Stennis in Mississippi. Pathfinder will be moved to VAB at left on Sept. 30 for testing and fit checks.  Credit: Ken Kremer/kenkremer.com/spaceupclose.com
Watch for Ken’s continuing onsite coverage of NASA, SpaceX, ULA, Boeing, Lockheed Martin, Northrop Grumman and more space and mission reports direct from the Kennedy Space Center, Cape Canaveral Air Force Station, Florida and Wallops Flight Facility, Virginia.

Stay tuned here for Ken's continuing Earth and Planetary science and human spaceflight news: www.kenkremer.com –www.spaceupclose.com – twitter @ken_kremer – email: ken at kenkremer.com

Dr. Kremer is a research scientist and journalist based in the KSC area, active in outreach and interviewed regularly on TV and radio about space topics.
………….

Ken’s photos are for sale and he is available for lectures and outreach events