Katherine Schauer, from Goddard Flight Space Center, wrote that LuGRE payload’s success in lunar orbit and on the surface indicates that signals from the GNSS (Global Navigation Satellite System) can be received and tracked at the Moon. These results mean NASA’s Artemis missions, or other exploration missions, could benefit from these signals to accurately and autonomously determine their position, velocity, and time. This represents a steppingstone to advanced navigation systems and services for the Moon and Mars.
“On Earth we can use GNSS signals to navigate in everything from smartphones to airplanes,” said Kevin Coggins, deputy associate administrator for NASA’s SCaN (Space Communications and Navigation) Program. “Now, LuGRE shows us that we can successfully acquire and track GNSS signals at the Moon. This is a very exciting discovery for lunar navigation, and we hope to leverage this capability for future missions.”
Ghost Riders in the Sky #
Meanwhile, Firefly Aerospace announced on March 2 its Blue Ghost lunar lander softly touched down on the Moon’s surface in an upright, stable configuration on the company’s first attempt. As part of NASA’s Commercial Lunar Payload Services (CLPS) initiative, Firefly’s Blue Ghost Mission 1, named Ghost Riders in the Sky, sets the tone for the future of exploration across cislunar space as the first commercial company in history to achieve a fully successful soft-landing on the Moon, stated on their website.
“Y’all stuck the landing, we’re on the Moon.”
“Firefly is literally and figuratively over the Moon,” said Jason Kim, CEO of Firefly Aerospace. “Our Blue Ghost lunar lander now has a permanent home on the lunar surface with 10 NASA payloads and a plaque with every Firefly employee’s name. This bold, unstoppable team has proven we’re well equipped to deliver reliable, affordable access to the Moon, and we won’t stop there. With annual lunar missions, Firefly is paving the way for a lasting lunar presence that will help unlock access to the rest of the solar system for our nation, our partners, and the world.”
Carrying 10 NASA instruments, Blue Ghost completed a precision landing in Mare Crisium at 2:34 a.m. CST on March 2 and touched down within its 100-meter landing target next to a volcanic feature called Mons Latreille. Blue Ghost’s shock absorbing legs stabilized the lander as it touched down and inertial readings confirmed the lander is upright in a stable configuration. Following touchdown, Firefly is successfully commanding and communicating with the lander from its Mission Operations Center in Cedar Park, Texas.
Oh… LuGRE #
The road to the historic milestone began on March 2 when the Firefly Aerospace’s Blue Ghost lunar lander touched down on the Moon and delivered LuGRE, one of 10 NASA payloads intended to advance lunar science. Soon after landing, LuGRE payload operators at NASA’s Goddard Space Flight Center in Greenbelt, Maryland, began conducting their first science operation on the lunar surface.
Total eclipse and many other experiments #
Blue Ghost begun its surface operations and support several NASA science and technology demonstrations over the following 14 days – equivalent to a full lunar day. The surface operations include lunar subsurface drilling, sample collection, X-ray imaging, and dust mitigation experiments. On March 14, Firefly expects to capture high-definition imagery of a total eclipse when the Earth blocks the sun above the Moon’s horizon. On March 16, Blue Ghost will then capture the lunar sunset, providing data on how lunar dust levitates due to solar influences and creates a lunar horizon glow first documented by Eugene Cernan on Apollo 17. Following the sunset, lunar lander will operate several hours into the lunar night and continue to capture imagery that observes how levitating dust behavior changes after the sunset.
“With the hardest part behind us, Firefly looks forward to completing more than 14 days of surface operations, again raising the bar for commercial cislunar capabilities,” said Shea Ferring, Chief Technology Officer at Firefly Aerospace. “Just through transit to the Moon, Firefly’s mission has already delivered the most science data to date for the NASA CLPS initiative. CLPS has played a key role in Firefly’s evolution from a rocket company to a provider of launch, lunar, and on-orbit services from LEO to cislunar and beyond. We want to thank NASA for entrusting in the Firefly team, and we look forward to delivering even more science data that supports future human missions to the Moon and Mars.”
Throughout its 45-day journey to the Moon, Blue Ghost traveled more than 2.8 million miles, downlinked more than 27 GB of data, and supported several payload science operations. This included signal tracking from the Global Navigation Satellite System at a record-breaking distance with the LuGRE payload, radiation tolerant computing through the Van Allen Belts with the RadPC payload, and measurements of magnetic field changes with the LMS payload.
Well done LuGRE!! #
With the receiver data flowing in, anticipation mounted. Could a Moon-based mission acquire and track signals from two GNSS constellations, GPS and Galileo, and use those signals for navigation on the lunar surface?
Then, at 2 a.m. EST on March 3, it was official: LuGRE acquired and tracked signals on the lunar surface for the first time ever and achieved a navigation fix — approximately 225,000 miles away from Earth.
Now that Blue Ghost is on the Moon, the mission will operate for 14 days providing NASA and the Italian Space Agency the opportunity to collect data in a near-continuous mode, leading to additional GNSS milestones. In addition to this record-setting achievement, LuGRE is the first Italian Space Agency developed hardware on the Moon, a milestone for the organization.
The LuGRE payload also broke GNSS records on its journey to the Moon. On Jan. 21, LuGRE surpassed the highest altitude GNSS signal acquisition ever recorded at 209,900 miles from Earth, a record formerly held by NASA’s Magnetospheric Multiscale Mission. Its altitude record continued to climb as LuGRE reached lunar orbit on Feb. 20 — 243,000 miles from Earth. This means that missions in cislunar space, the area of space between Earth and the Moon, could also rely on GNSS signals for navigation fixes.
Traditionally, NASA engineers track spacecraft by using a combination of measurements, including onboard sensors and signals from Earth-based tracking stations. The LuGRE payload demonstrates that using GNSS signals for navigation can reduce reliance on human operators because these signals can be picked up and used autonomously by the spacecraft, even as far away as the Moon.
The LuGRE payload is a collaborative effort between NASA’s Goddard Space Flight Center in Greenbelt, Maryland, the Italian Space Agency, their industry partner Qascom, and Politecnico di Torino. Funding and oversight for the LuGRE payload comes from NASA’s SCaN Program office. It was chosen by NASA as one of 10 funded research and technology demonstrations for delivery to the lunar surface by Firefly Aerospace Inc., a flight under the agency’s Commercial Lunar Payload Services initiative.