Monday, August 31, 2020

Boeing's Starliner makes progress ahead of flight test with astronauts

NASA and Boeing continue to make progress toward the company's second uncrewed flight test of the CST-100 Starliner spacecraft prior to flying astronauts to the International Space Station as part of NASA's Commercial Crew Program. The Commercial Crew Program currently is targeting no earlier than December 2020 for launch of the uncrewed Orbital Flight Test-2 (OFT-2) pending hardware readiness, flight software qualification, and launch vehicle and space station manifest priorities. Over the summer, Boeing's Starliner team focused on readying the next spacecraft for its upcoming flight tests as well as making improvements identified during various review processes throughout the beginning of the year. NASA also announced an additional crew assignment for its first operational mission, NASA's Boeing Starliner-1, with astronauts to the space station. Here's more on the recent progress: Teams from Boeing are well into final assembly of the crew and service modules that will fly OFT-2 to the space station inside of the company's Commercial Crew and Cargo Processing Facility (C3PF) at NASA's Kennedy Space Center in Florida. OFT-2 will fly a new, reusable Starliner crew module providing additional on-orbit experience for the operational teams prior to flying missions with astronauts. For Boeing's Commercial Crew missions, the Starliner spacecraft will launch atop a United Launch Alliance Atlas V rocket.


With the majority of assembly complete, recent progress is focused on the NASA docking system re-entry cover, which was added to the design for additional protection of the system. The team also has completed the installation of the Starliner propellant heater, thermal protection system tiles and the air bags that will be used when the spacecraft touches down for landing. As final production activities continue to progress, the crew module recently entered acceptance testing, which will prove out the systems on the spacecraft before it's mated with its service module.

In Houston, the software team is nearing the final stages of modifying and re-verifying the flight code after the first uncrewed flight test. As part of that effort, the team recently began a major milestone called Formal Qualification Testing, which is a comprehensive test of flight software and an important step in preparing for an end-to-end mission rehearsal test.

Boeing also remains focused on incorporating the recommendations from the joint NASA-Boeing Independent Review Team with almost 75% of the 80 proposed actions implemented. The independent team was formed to review anomalies experienced during OFT, which led to Starliner not reaching its planned orbit or docking to station as planned, and to provide recommendations to ensure a robust design for future missions. In addition to opting to re-fly its uncrewed flight test, Boeing elected to comprehensively implement all of the recommendations provided by the review team.

Following a successful OFT-2, Boeing will focus full attention on preparations for its final flight test with astronauts and is already completing work on the Crew Flight Test spacecraft in parallel. Teams continue refurbishing the crew module flown on Starliner's first uncrewed flight test for reuse with astronauts. After removing and conducting checkouts on various systems and flight hardware, Boeing is preparing to reassemble the vehicle for flight. Soon, outfitting of the crew module's interior will begin along with packing parachutes and airbags ahead of installation. The vehicle's NASA Docking System has been modified to accommodate the new cover, and outfitting of subsystem components continues on the spacecraft's brand new service module.

Crew Updates and Target Flight Schedules
In advance of the OFT-2 mission, flight control teams from NASA and Boeing completed an integrated launch-to-docking simulation in August with additional mission simulations on the horizon as the teams fine-tune flight rules and procedures.

After a successful OFT-2, Boeing and NASA will fly Starliner's first crewed mission, the Crew Flight Test, currently targeted for no earlier than June 2021, with the first post-certification mission, called Starliner-1, tentatively scheduled for no earlier than late December 2021.

The CFT crew members are Boeing astronaut Chris Ferguson and NASA astronauts Mike Fincke and Nicole Mann.

In addition to training for living and working on station, astronauts continue to work closely with Starliner test teams. Several crew members plan to participate in ongoing acceptance testing of the OFT-2 crew module inside the C3PF.

Recently, the CFT crew helped test software updates with real flight hardware in Boeing's Avionics and Software Integration Lab in Houston. They practiced performing manual separation events for several low likelihood contingencies, demonstrating the software improvements had no adverse effect on controls needed to stay safe in any situation. The crew also participated in procedural dry runs for future life support tests with the Starliner spacecraft in Florida. Later this year, the CFT crew will be suited inside the spacecraft with the vehicle providing all of their life support.

NASA astronauts Sunita Williams, Josh Cassada and Jeanette Epps are crew members of the Starliner-1 mission. Cassada and Williams were both selected for the mission in August 2018, and NASA announced Epps' assignment Aug. 25.

Astronauts for both CFT and Starliner-1 missions regularly participate in rehearsals of launch and mission operations in both normal and emergency scenarios. They also are continuing with on-going mission-specific training for life in orbit including the work they'll perform after joining their respective Expedition crews awaiting them on station.

The goal of NASA's Commercial Crew Program is safe, reliable and cost-effective transportation to and from the International Space Station. This could allow for additional research time and increase the opportunity for discovery aboard humanity's testbed for exploration, including helping us prepare for human exploration of the Moon and Mars.

Sunday, August 30, 2020

SpaceX plans to launch Argentine satellite into polar orbit from Florida

SpaceX plans to launch an Earth observation satellite for Argentina's space agency Sunday evening as the first polar orbit mission from Florida in more than 50 years. A Falcon 9 rocket is scheduled to lift off with the SAOCOM 1B satellite at 7:19 p.m. EDT from Complex 40 at Cape Canaveral Air Force Station. This rocket is to head south over the Atlantic Ocean, while most Florida launches go east. The spacecraft will pass over Cuba, and the first stage booster will fly back for recovery near the Air Force station, likely creating a sonic boom. In the past, launching over communist Cuba would have caused "consternation" due to the Cold War standoff and lingering tension after that, U.S. Space Force Brig. Gen. Douglas Schiess said this week. Since 1969, rockets launched from the United States have lifted off from Vandenberg Air Force Base in California or from Kodiak Island in Alaska. Both of those sites have clear shots to the south over open water. Any debris would not fall into populated areas. Concerns about polar launches from Florida date to 1960, when part of a Thor rocket fell on Cuba, reportedly killing a cow. That resulted in a moratorium and shifted all polar launches away from Florida. The U.S. Space Command announced in 2017 that it again had certified a polar launch trajectory from Florida, but only if the rocket had an automated launch termination capability. SpaceX's Falcon 9 rocket has that. Schiess said the U.S. State Department "notified" Cuba of the pending launch, but he didn't know if Cuba responded. Calls and emails to the department for comment were not returned.


The rocket should be so high into the atmosphere as it crosses over the island nation that any potential debris from a failure would be small and dispersed by the time it reached Earth, the general said.

Argentina's satellite had been scheduled for launch in March, but was postponed due to the coronavirus pandemic, according to the Argentine agency, known as CONAE for the Comision Nacional de Actividades Espaciales (National Commission of Space Activities).

The delay "forced us to stay a long time in Cape Canaveral, away from our families," according to a statement from the agency's executive and technical director, Raul Kulichevsky.

The launch had been set for Friday night, but the delay of another launch - United Launch Alliance's rocket carrying a U.S. spy satellite - bumped the Argentine mission to Sunday.

The first of two SAOCOM satellites was launched in October 2018. According to the mission description for the program, a major focus for the spacecraft is to monitor weather and agriculture.

Data on soil moisture "will help producers know the best time for sowing, fertilizing and irrigation, in crops such as soybeans, corn, wheat and sunflower," the description said.

Sunday, August 23, 2020

Lockheed Martin and USC build smart cubesats

Lockheed Martin is building mission payloads for a Space Engineering Research Center at University of Southern California (USC) Information Sciences Institute small satellite program called La Jument, which enhance Artificial Intelligence (AI) and Machine Learning (ML) space technologies. For the program, four La Jument nanosatellites - the first launching later this year - will use Lockheed Martin's SmartSat software-defined satellite architecture on both their payload and bus. SmartSat lets satellite operators quickly change missions while in orbit with the simplicity of starting, stopping or uploading new applications. The system is powered by the NVIDIA Jetson platform built on the CUDA-X capable software stack and supported by the NVIDIA JetPack software development kit (SDK), delivering powerful AI at the edge computing capabilities to unlock advanced image and digital signal processing. SmartSat provides on-board cyber threat detection, while the software-defined payload houses advanced optical and infrared cameras utilized by Lockheed Martin's Advanced Technology Center (ATC) to further mature and space qualify Artificial Intelligence (AI) and Machine Learning (ML) technologies. The La Jument payloads are the latest of more than 300 payloads Lockheed Martin has built for customers. "La Jument and SmartSat are pushing new boundaries of what is possible in space when you adopt an open software architecture that lets you change missions on the fly," said Adam Johnson, Director of SmartSat and La Jument at Lockheed Martin Space. "We are excited to release a SmartSat software development kit (SDK) to encourage developers to write their own third-party mission apps and offer an orbital test-bed."


Powering Artificial Intelligence at the Edge
La Jument satellites will enable AI/ML algorithms in orbit because of advanced multi-core processing and on-board graphics processing units (GPU). One app being tested in orbit will be SuperRes, an algorithm developed by Lockheed Martin that can automatically enhance the quality of an image, like some smartphone camera apps. SuperRes enables exploitation and detection of imagery produced by lower-cost, lower-quality image sensors.

"We were able to design, build and integrate the first payload for La Jument in five months," said Sonia Phares, Vice President of Engineering and Technology at Lockheed Martin Space. "Satellites like this demonstrate our approach to rapid development and innovation that lets us solve our customers' toughest challenges faster than ever."

Bringing Four Satellites Together
The first of the four La Jument nanosatellites is a student-designed and built 1.5U CubeSat that will be launched with a SmartSat payload to test the complete system from ground to space, including ground station communications links and commanding SmartSat infrastructure while in-orbit. The second is a 3U nanosat, the size of three small milk cartons stacked on top of each other, with optical payloads connected to SmartSat that will allow AI/ML in-orbit testing. Finally, two 6U CubeSats are being designed jointly with USC that will be launched mid-2022. The pair will launch together and incorporate future research from USC and Lockheed Martin, including new SmartSat apps, sensors and bus technologies.

Lockheed Martin has a long history of creating small satellites, having launched more than 150. More recent nanosat projects include Pony Express 1, Linus, NASA's Lun-IR, Janus and Grail. Additionally, Lockheed Martin will be the prime integrator for DARPA's Blackjack small sat constellation.

Saturday, August 22, 2020

Arecibo Observatory data help lead to discovery of cosmic 'heartbeat'

An international team of researchers using data from Arecibo Observatory and the Fermi Space Telescope have discovered what they call a "gamma-ray heartbeat" coming from a cosmic gas cloud. The cloud is in the constellation Aquilla and "beats" in rhythm with a black hole 100 light years away in a microquasar system known as SS 433. The results were published in the journal Nature Astronomy. "This result challenges obvious interpretations and is unexpected from previously published theoretical models," says Jian Li, a Humboldt Fellow with the Deutsches Elektronen-Synchrotron in Zeuthen, Germany, and study co-author. "It provides us with a chance to unveil the particle transport from SS 433 and to probe the structure of the magnetic field in its vicinity." In the SS 433 system, a black hole orbits a giant star, 30 times the mass of Earth's sun. The black hole sucks matter from the giant star while orbiting it, forming a swirling accretion disc that drains into the black hole, like water into a bathtub drain. Some of the matter doesn't fall into the hole though, but rather jets out in high speed spirals from the disc's center in both directions, top and bottom, like pegs on a wheel. The researchers made the discovery by analyzing more than a decade of data from NASA's Fermi Large Area Space Telescope and from Galactic ALFA HI survey data collected with the Arecibo Observatory's 1,000-foot-wide radio telescope. The observatory was recently damaged and is currently offline, but scientists continue to have access to data previously collected. Engineers are assessing what caused a cable to break and plans for repairs.


The researchers found that the precession, or wobble, of the black hole's jets matched with a gamma-ray signal emitted from a gas cloud. The researchers have labeled the position in the gas cloud Fermi J1913+0515. The position was revealed using Arecibo Observatory's telescope, and Fermi provided data about the SS 433 system.

"The consistent periods indicate the gas cloud's emission is powered by the micro quasar," Li says.

Scientists still do not fully know how the jets overcome the black hole's pull and are emitted from the disc, and the current study presents a new question - How does the black hole power the gas cloud's heartbeat?

The study's researchers say further observations and theoretical work are needed, but one suggestion is that the cloud's gamma-ray emissions are caused by the injection of the nuclei of hydrogen atoms, known as fast protons, that are produced at the end of the jets, or near the black hole.

"SS 433 continues to amaze observers at all frequencies and theoreticians alike," Li says. "And it is certain to provide a testbed for our ideas on cosmic-ray production and propagation near microquasars for years to come."

Friday, August 21, 2020

The most sensitive instrument in the search for life in space comes from Bern

The question of whether life exists beyond the Earth is one of humanity's most fundamental questions. Future NASA missions, for example, aim to examine the ice moons of Jupiter and Saturn, which may potentially shelter life in the liquid oceans underneath the thick layer of ice, on the ground. Proving traces of life beyond the Earth is extremely challenging, however. Highly sensitive instruments which take measurements on the ground with the greatest possible degree of autonomy and with high precision - millions of kilometers from the Earth and thus without direct support from humankind - are required. An international group of researchers under the leadership of Andreas Riedo and Niels Ligterink at the University of Bern have now developed ORIGIN, a mass spectrometer which can detect and identify the smallest amounts of such traces of life. They describe the instrument in a recently published article in the specialist journal Nature Scientific Reports. Niels Ligterink from the Center for Space and Habitability (CSH) is the lead author of the international study, and co-author Andreas Riedo from the Physics Institute at the University of Bern developed the instrument in the laboratories of the space research and planetary sciences divison of the Physics Institute. Various international space agencies, particularly NASA, have already expressed interest in testing ORIGIN for future missions. Since the first Mars mission "Viking" in the 1970s, humanity has been searching for traces of life on Mars using highly specialized instruments which are installed on landing platforms and rovers. In its early years, Mars was Earth-like, had a dense atmosphere and even liquid water.


However, as Niels Ligterink explains, Mars lost its protective atmosphere over the course of time: "As a result of this, the surface of Mars is subjected to high solar and cosmic radiation which makes life on the surface impossible." NASA's "Curiosity" rover is currently examining Mars in detail but with no concrete indications of traces of life to date.

Since the discovery by the Cassini and Galileo missions of the global oceans beneath kilometers of ice layers on Jupiter's moon Europa and Saturn's moon Enceladus, these two bodies have increasingly become the focus of the search for extraterrestrial life for researchers.

According to current knowledge, the oceans have all of the properties which are not only needed for the occurrence of life, but also which provide environments in which life can exist in the long term. NASA therefore plans to land a mission on Jupiter's moon Europa around 2030 and take measurements on the ground.

The goal: Identification of life. Co-author Prof. Dr. Peter Wurz from the Physics Institute at the University of Bern says: "Concepts which were specially developed for Mars cannot be simply applied to other bodies in our solar systembecause they are very different. New instruments with higher sensitivity and simpler and more robust analysis systems must be designed and used".

Unprecedented measurement sensitivity for proof of life in space
ORIGIN is one such new instrument which outperforms previous space instruments many terms over in terms of its measurement sensitivty. Various international space agencies have expressed great interest in the instrument for future missions.

Andreas Riedo says: "NASA has invited us to particpaite and test our instrument in the Arctic. The Artic is the optimal test environment in the context of the EUROPA LANDER mission, which should start in 2025, which will allow us to demonstrate the performance of ORIGIN."

Amino acids are key components of life as we know it on Earth. Contemporaneous proof of certain amino acids on extraterrestrial surfaces, such as those of Europa, allow conclusions to be drawn about possible life.

The measurement principle developed by the Bern-based researchers is simple. Niels Ligterink explains: "Laser pulses are directed at the surface to be examined. In the process, small amounts of material are detached, the chemical composition of which is analyzed by ORIGIN in a second step".

Andreas Riedo adds: "The compelling aspect of our technology is that no complicated sample preparation techniques, which could potentially affect the result, are required. This was one of the biggest problems on Mars until now," says Riedo.

The amino acids which have been analyzed with ORIGIN to date have a specific chemical fingerprint which allows them to be directly identified. Niels Ligterink: "To be honest, we didn't expect that our first measurements would already be able to identify amino acids."

The discovery of traces of past or present life on bodies in our solar system beyond the Earth is of great importance for a better understanding of the existence of life in the universe and its genesis.

Andreas Riedo says: "Our new measurement technology is a real improvement on the instruments currently used on space missions. If we are taken along on a future mission, we may be able to answer one of humanity's most fundamental questions with ORIGIN: Is there life in space?".