Space Science Missions

The Kalyazin radio telescope looks like a relic from the cold war. A 64 metre steel dish rising out of the forests north of Moscow, streaked with rust and surrounded by nothing but quiet fields. Yet this is one of the most capable deep-space instruments ever built by Soviet engineers, and it is still listening to the universe today. The image shows the RT-64 dish at the Kalyazin Radio Astronomy Observatory. It was constructed over nearly two decades from 1974 to 1992. The structure sits on a rotating bearing the size of a small house. This allows the entire 1600 tonne assembly to swing with millimetre precision across the sky. Its purpose extended far beyond astronomy. During the Cold War, the Soviet deep space network required enormous dishes to communicate with probes heading to Venus and Mars. A radio signal sent from Mars arrives with about the same power as a wristwatch battery spread over an entire continent. A 64 metre collector was one of the few ways to decode those faint pulses. Kalyazin became one of three identical RT-64 complexes across the Soviet Union that handled this engineering challenge. The engineers who built it used an unusual steel truss pattern to keep the reflector surface accurate to a few millimetres over its entire span. That accuracy is roughly the thickness of a credit card spread across an area larger than a football field. It is what allows the dish to perform spectral radio astronomy and planetary radar experiments. Kalyazin sometimes looks abandoned in photographs because the support tower is weathered and the surrounding town is quiet. The reality is very different. Seventeen researchers operate the site and use it for pulsar timing, white dwarf studies and the mapping of distant galaxies. In 2016 it joined an astrobiology programme with ESA and Roscosmos to support the ExoMars mission. It continues to serve in VLBI networks, where multiple widely separated telescopes combine to create a synthetic aperture larger than any single structure could ever achieve. It is an engineering artefact from a geopolitical world that no longer exists. Yet it remains one of the instruments that keeps Earth linked to the faint radio heartbeat of the universe. - 🔔 I post daily on engineering and infrastructure, or the company we are building over at EPCM Holdings. If that is your thing, follow me or check out my blog (link under my profile photo) I never use AI footage. /Kalyazin Radio Astronomy Observatory

China’s Plan to 3D-Print Bricks on the Moon Using Lunar Soil by 2028 Imagine building homes—not on Earth, but on the Moon—with bricks made from lunar soil. That’s exactly what China is planning with its ambitious Chang’e 8 mission, set to launch in 2028. As part of its roadmap for the International Lunar Research Station (ILRS), China is taking a bold step toward in-situ resource utilization—using what’s already available on the Moon rather than transporting materials from Earth. The cost savings and sustainability implications of this approach are enormous. Here’s how it works: • A high-tech system aboard Chang’e 8 will concentrate sunlight via fiber optics to heat lunar soil to 1400–1500°C (2552–2732°F). • This molten soil will then be 3D-printed into bricks—paving the way for future moon infrastructure. If successful, this could redefine how humanity thinks about space exploration, construction, and even habitation beyond Earth. This isn’t just a leap for China—it’s a leap for all of us watching the next chapter of human innovation unfold. What are your thoughts on building with moon dust? #SpaceInnovation #LunarExploration #3DPrinting #ChangE8 #ChinaSpace #InSituResourceUtilization #FutureOfConstruction #MoonBase #TechForTomorrow

Standing beneath the F-1 rocket engine at NASA’s Johnson Space Center feels like standing under a thunderstorm forged from metal. At over 5 m tall and weighing ~ 8 tonnes, it generated 1.5 million pounds of thrust & yet its “brain” could only capture a fraction of the story back in the day. In the 1960s, the F-1’s test data was captured through MIL-STD-1553-era precursors and analog instrumentation pressure, flow, temperature, vibration distributed over a few hundred channels. Engineers literally read rocket health through spiking ink traces on oscillographs. Each launch meant kilometers of wire and racks of tape recorders archiving data at kilohertz speeds. During the Apollo era, each test produced roughly hundreds of telemetry channels, sampled in analog bursts temperature, pressure, vibration, flow. That data filled rooms of oscillographs and magnetic tape. Today, a single modern engine test can exceed 20 TB of digital telemetry, streaming from thousands of sensors at millisecond precision. And that’s where the next decade gets exciting: 🧠 Digital twins predicting anomalies before ignition. ⚙️ Embedded fiber and sensors turning every bolt into a data source. ☁️ Edge analytics transforming hot-fire tests into living simulations. 🛰️ Additive-manufactured engines with built-in telemetry channels for self-diagnosis. From 64 channels of Apollo-era data to billions of data points per burn this is how propulsion evolves: not just more powerful, but more perceptive. What was once legacy and analog is now digital, deterministic, and distributed. Telemetry isn’t just for diagnostics it’s part of the design feedback loop, feeding digital twins that learn from every test. The F-1 taught us how to listen to engines. The next generation will teach us how to converse with them. The engines of the 2030s will think, adapt, and learn in real time. #F1Engine #SaturnV #Engineering #Telemetry #DigitalTwins #SpaceExploration #Telemetry

Developing satellite nozzles requires a meticulous approach, blending advanced engineering principles with cutting-edge materials science. Here’s a breakdown of the critical methods involved: 1. Material Selection: The choice of material is pivotal, as satellite nozzles must endure extreme temperatures and high-velocity exhaust gases. Advanced materials like Niobium alloys, Tantalum, and Carbon-Carbon composites are often used due to their high melting points and thermal conductivity. 2. Additive Manufacturing (3D Printing): 3D printing has revolutionized satellite nozzle production by allowing complex geometries that traditional methods can’t achieve. Selective Laser Melting (SLM) and Electron Beam Melting (EBM) are prominent techniques, offering high precision and reduced material wastage. 3. Thermal Analysis & Simulation: Computational models like CFD (Computational Fluid Dynamics) and Finite Element Analysis (FEA) are essential for predicting thermal stresses, ensuring the nozzle can withstand the harsh conditions of space. 4. Surface Treatment & Coating: To enhance durability and reduce wear, nozzles often undergo surface treatments like Chemical Vapor Deposition (CVD) or Physical Vapor Deposition (PVD), applying protective coatings that resist oxidation and erosion. 5. Precision Machining: Final shaping and detailing of the nozzle require high-precision machining techniques. CNC milling with tight tolerances ensures that each nozzle meets exacting specifications, critical for optimal performance in space missions. 6. Rigorous Testing: Nozzle prototypes undergo extensive testing, including hot-fire tests and vacuum simulations. This ensures reliability under the unique conditions of space, where failure is not an option. By leveraging these advanced methods, aerospace engineers can develop satellite nozzles that are not only efficient and durable but also capable of propelling missions into the vastness of space. #AerospaceEngineering #SatelliteNozzles #3DPrinting #CFD #MaterialsScience #AdvancedManufacturing #SpaceTechnology #PrecisionEngineering #InnovationInSpace

Using cameras designed for navigation, scientists count ‘fireflies’ to determine the amount of radiation the spacecraft receives during each orbit of Jupiter. Scientists with NASA’s Juno mission have developed the first complete 3D radiation map of the Jupiter system. Along with characterizing the intensity of the high-energy particles near the orbit of the icy moon Europa, the map shows how the radiation environment is sculpted by the smaller moons orbiting near Jupiter’s rings. The work relies on data collected by Juno’s Advanced Stellar Compass (ASC), which was designed and built by the Technical University of Denmark, and the spacecraft’s Stellar Reference Unit (SRU), which was built by Leonardo SpA in Florence, Italy. The two datasets complement each other, helping Juno scientists characterize the radiation environment at different energies. Both the ASC and SRU are low-light cameras designed to assist with deep-space navigation. These types of instruments are on almost all spacecraft. But to get them to operate as radiation detectors, Juno’s science team had to look at the cameras in a whole new light. “On Juno we try to innovate new ways to use our sensors to learn about nature, and we have used many of our science instruments in ways they were not designed for,” said Scott Bolton, Juno principal investigator from the Southwest Research Institute in San Antonio. “This is the first detailed radiation map of the region at these higher energies, which is a major step in understanding how Jupiter’s radiation environment works. This will help planning observations for the next generation of missions to the Jovian system.” #ASC #SRU #NASA #Jupiter Using data from the Advanced Stellar Compass (ASC) star tracker cameras aboard NASA’s Juno, this graphic shows the mission’s model for radiation intensity at different points in the spacecraft’s orbit around Jupiter. (NASA/JPL-Caltech/DTU)

Designing, manufacturing and integrating optical payloads for Earth Observation (EO) is one of the most elite and demanding segments of the European space industry. You won’t find hundreds of players here. It’s a domain dominated by long-established aerospace giants with decades of experience (Airbus Defence and Space, OHB SE, Thales Alenia Space, Safran, ArianeGroup) — and just a handful of “young” companies that have already proven they belong in this league. Why is this such a tough market? Because space optics is unforgiving. These instruments must operate in extreme conditions while delivering sub-meter precision and rock-solid reliability. They require deep expertise and a complex value chain — from optical and mechanical design, through precision assembly and integration, to rigorous AIT (Assembly, Integration & Testing) in cleanroom environments. And yet — in this highly selective club — we have a Polish representative: Scanway Space from Wrocław. Scanway develops and delivers compact EO telescopes (VIS/NIR) for microsatellites and CubeSats, including the SOP-200, which is already on orbit. The company is also a subsystem supplier to other integrators. It’s one of the most dynamic and fast-growing optical companies in Europe. Below is a graphic overview of European companies designing and delivering EO telescopes. Yes — it’s far from complete, and surely not perfect. But it’s a starting point. I warmly invite your input — and I’d love to expand it together with the community. Let’s keep one clear criterion, though: This list includes only companies that design, assemble, integrate, test (AIT), and commercially offer optical payloads for EO under their own brand. That means full optical payload integrators — not just platform builders or component providers.

NASA just quietly published something incredible. It’s called the Moon Base User’s Guide. It's a map of how we build a permanent human presence off Earth. This is an invitation to industry. A list of unsolved problems and a blueprint for an entirely new off-planet industrial stack. NASA is essentially saying: "Here are the missing pieces. Come build them." It's super pragmatic. Phase 1: prove we can land reliably, test systems, send the first crew Phase 2: build infrastructure, increase payloads 15x Phase 3: continuous human presence From ~4,000 kg → ~150,000 kg delivered to the surface. Industrialization, not just exploration! Where to build on the moon? They’re not choosing the easiest place. They’re choosing the south pole. Extreme terrain, deep shadows, brutal cold. Why? Because that’s where the resources are! This is for the long term. The hardest problems are things like: Moving cargo autonomously, surviving 100+ hours of darkness, high-bandwidth comms from the surface, transferring water & gases & waste between systems, operating robots from Earth, habitats. Moon logistics! The "functional gaps" section make clear we don’t yet know how to run a supply chain on another world. We’re missing: Power grids Navigation systems Warehousing Mobility networks Maintenance infrastructure No Home Depots on the moon! NASA is also explicitly trying to create a market. Bulk purchasing. Shared infrastructure. Interoperability standards. Multiple providers. They want to seed a lunar economy! And then the big reveal: This is all a dress rehearsal for Mars. Everything is framed as "Mars-forward": Nuclear power Autonomous operations Human performance in deep space Dust tolerance Logistics at planetary scale The Moon is the test environment. Very cool: they’re pairing this with nuclear propulsion (SR-1 Freedom) and robotic scouts for Mars landing sites. This is moon base + preparation for interplanetary expansion. If you’re a founder, this doc is gold. Areas where NASA needs help: Surface habitates Logistics services Robotics Cargo delivery + return Resource mapping Navigation systems If you want to help build cities on other worlds, this is a great place to start! I love this document. This is what the early days of a new frontier look like. Messy infrastructure. Standards. Supply chains. Interfaces. The layer that makes everything else possible. This is outlining the transition from "going to space" to building civilization in space. And this time, it won’t just be governments. The whole thing linked in the comments. Ad astra!

The first true engineering evaluation of Artemis III landing sites. Most papers stay within the science lanes of regolith maturity, orbital maps, and ice signals. I went somewhere else. I built a new OCR* proxy, calibrated straight from Apollo, Luna, and Chang’e-6 ground truth, and turned all that raw orbital data into actual construction numbers: bearing capacity, how much things will settle, how hard it is to dig, how much dust you’ll fight, and what the roads will really behave like. The outcome is this one-page Geotechnical Cheat Sheet. My clear recommendation: Mons Mouton Plateau. It gives us the largest stretch of stable, flat, mechanically favorable ground (big contiguous Zone-A), low-to-moderate variability, L2/L3 performance, and the least amount of ground treatment needed for foundations and early roads. Exactly what we need if we want to land, build, and stay. This is the first time someone translated the candidate sites into language that lunar builders and infrastructure teams can actually use on Day 1. If you’re working on habitats, landing pads, roads, power stations, or anything that has to sit on the lunar surface, this is the ground model I wish had existed when I started the Moon Builders series. What do you think? Is Mons Mouton Plateau the right call for the first sustained lunar outpost? Would love serious thoughts from Artemis/CLPS folks, lunar construction teams, geotechnical engineers, and anyone serious about building on the Moon. NOTE: de Gerlache Rim and Haworth Crater (SW) were among the top three geomechanically feasible sites. #ArtemisIII #LunarConstruction #SpaceGeotech #LunarGeotechnics #MoonBase #MoonBuilders

China achieves first-ever laser measurement of Earth-Moon distance China has made a significant advancement in deep-space exploration with its successful satellite laser ranging at the Earth-Moon distance. The achievement, announced by the Chinese Academy of Sciences (CAS), marks the first-ever precise laser measurement of a satellite, DRO-A, located approximately 350,000 kilometers away. This measurement was made possible by a unique single-corner-cube reflector onboard the satellite and a ground-based 1.2-meter telescope system. This breakthrough places China among a select few nations capable of performing high-precision lunar-distance measurements. Experts believe such accuracy is essential for future lunar missions and deep-space navigation. Zhang Wei, the chief engineer of the project, emphasized that the success of this laser ranging lays the foundation for centimeter-level precision in lunar and deep-space measurements. The satellite’s reflector, developed by the Shanghai Astronomical Observatory, overcame several challenges, including precise angular control and maintaining thermal stability in extreme space conditions. Additionally, the Yunnan Astronomical Observatory played a critical role in optimizing the ground system to detect extremely weak signals and make fine adjustments to the telescope, ensuring successful measurement. This achievement, led by the Innovation Academy for Microsatellites and other CAS institutes, demonstrates China’s growing capabilities in space technology. Future plans aim to expand participation in ground station operations and refine reflector designs, further solidifying China’s leadership in Earth-Moon exploration.

Exciting stuff from ISRO! Let’s dive into India’s Cosmic Dust Experiment (CDE), also known as the Dust EXperiment (DEX). This compact instrument, developed by the Physical Research Laboratory in Ahmedabad, is designed to hunt for high-speed interplanetary dust particles (IDPs) originating from comets and asteroids. The Device: DEX is a lightweight powerhouse—weighing just 3 kg and sipping only 4.5 W of power. It boasts a 140° wide-view field to spot orbital debris and those elusive IDPs. It flew aboard the PSLV Orbital Experimental Module (POEM) on the PSLV-C58 XPoSat mission, launched back on January 1, 2024, into a 350 km orbit. The Technology: At its core, DEX relies on the hypervelocity impact principle. When dust particles smash into the detector at incredible speeds, they generate detectable signals—think of it as a cosmic particle trap in space. How It Works: The instrument captures impact signals from these high-velocity collisions. During its operation from January 1 to February 9, 2024, it logged hits about every thousand seconds, measuring a dust flux of around 6.5 × 10⁻³ particles per square meter per second. This aligns with established models and confirms the constant cosmic dust bombardment Earth faces. Is It a Major Breakthrough? While not a revolutionary leap, it’s a foundational milestone—DEX is India’s first homegrown tool for directly detecting IDPs. It provides fresh, real-time data that’s unmatched in certain environments, paving the way for more advanced cosmic dust studies. Why It’s Important: This experiment reshapes our understanding of the universe by quantifying IDPs entering Earth’s atmosphere. More crucially, it’s a blueprint for probing dust in other worlds like Venus, Mars, or the Moon—where no such measurements exist yet. It helps assess space hazards for satellites, ensures safer deep-space missions for humans, and monitors orbital environments. In short, it’s key to making space travel sustainable and secure! For context, scientific estimates of the total mass of cosmic dust entering Earth’s atmosphere (from various studies, including radar, lidar, and collection in polar ice) typically range from ~5–300 tons per day (most commonly cited around 40–100 tons/day, or roughly 15,000–40,000 tons per year). The DEX flux fits within the lower-to-mid range of particle-number observations for IDPs in near-Earth space, confirming it’s a realistic measurement rather than an outlier.