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ᅠ 𝟤𝟥:𝟢𝟤 / ✦ Authorization granted for 𝗠𝗼𝗼𝗻 𝗠𝗶𝘀𝘀𝗶𝗼𝗻: 𝗞𝗲𝘃𝗶𝗻’𝘀 𝗢𝗿𝗯𝗶𝘁 𝗦𝗵𝗶𝗳𝘁. System diagnostics confirm his return to lunar orbit, recalibrated through a measured phase of growth. From this point on, the trajectory will speak for itself. 🪐 ᅠ

22,109 görüntüleme • 5 ay önce •via X (Twitter)

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When a spacecraft leaves Earth, it doesn’t just fire its engines and head straight to its destination. In many missions, especially those going beyond low Earth orbit, there’s a more subtle and elegant strategy at play, one that uses gravity itself as part of the navigation system. This is often called a gravity assist, or a slingshot maneuver. But in the case of missions like #Artemis II, what’s being used is a closely related idea known as a free-return trajectory. At first glance, it might sound simple: the spacecraft goes to the Moon, loops around it, and comes back. But the physics behind it is anything but simple. Instead of relying on continuous propulsion, the spacecraft follows a carefully calculated path through the gravitational field of the Earth–Moon system. It is launched with just the right speed and direction so that, as it approaches the Moon, the Moon’s gravity bends its trajectory. The spacecraft is effectively flung around the Moon, redirected onto a path that naturally brings it back toward Earth. No major engine burn is needed for the return. Small trajectory corrections may still be required, but gravity does the heavy lifting. That’s the key. This kind of trajectory is not just efficient, it’s also safe. If something goes wrong with the spacecraft’s engines or onboard systems, gravity itself ensures the return. It’s an inherent backup plan, built into the trajectory from the very beginning. The same fundamental idea appears in gravity assists used across the Solar System. When a spacecraft flies past a planet, it can gain or lose speed by exchanging momentum with that planet. From the spacecraft’s point of view, it’s as if it has been accelerated without using fuel. In reality, it has borrowed a tiny amount of orbital energy from the planet itself. That’s how missions like Voyager reached the outer planets, and how probes continue to explore regions far beyond what their onboard fuel alone would allow. But there’s an important distinction. An interplanetary gravity assist is typically used to change speed and direction, often increasing the spacecraft’s energy. A free-return trajectory, like the one used in Artemis II, is designed for something more specific: a path that naturally loops back to Earth without requiring additional propulsion. It’s less about gaining energy, and more about shaping a trajectory that guarantees a return. To understand why this works, it helps to stop thinking in straight lines. In space, motion follows curves defined by gravity. The spacecraft is constantly falling, first toward Earth, then toward the Moon, and then back toward Earth again. What looks like a loop is really a continuous free fall through a changing gravitational landscape. This way of navigating space reveals something deeper. We tend to think of engines as the drivers of motion, but once a spacecraft is on its way, gravity does most of the work. The art of spaceflight is not just about thrust. It’s about knowing when not to use it. #GoodLuck #Artemis NASA Artemis

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NASA has just launched a new website for its Moon Base missions, which aims to build a permanent $20 billion U.S. base on the Moon. SpaceX's Starship rocket will play a big role in these missions. "The Moon Base is a home away from Earth for Artemis astronauts who will live and work at humanity’s first lunar outpost. NASA is leading global teams of innovators across international space agencies, industry, and academia to build the Moon Base and establish an enduring human presence near the lunar South Pole for the benefit of all. Phase One (Now–2029): Experiment and Learn NASA will begin with a rapid series of robotic missions to scout the lunar South Pole region, test technologies, and prepare for surface operations ahead of future astronaut missions.: • A major increase in lunar activity, with up to 25 missions, including 21 landings. • Crewed and autonomous rovers for mobility demonstrations and surface preparation, along with four drones known as MoonFall and communications relay and observation satellites. • Early demonstrations of power, navigation, communications, and nuclear radioisotope heater unit technologies designed to endure the long lunar night. • Scientific payload opportunities integrated across landers and rovers. • The first tangible footprint of Moon Base effort, with four tons of payload delivered to test what works on the lunar surface. Phase Two (2029–2032): Early Habitation By 2029, NASA will transition to assembling semi-permanent infrastructure and initiating early habitation and logistics operations: • Deployment of expanded solar power systems and initial nuclear surface power capabilities, potentially including fission reactors and radioisotope power systems. • Upgraded rovers, potential advanced MoonFall drones, and early habitation elements. • Enhanced surface-to-orbit communications networks to provide reliable connectivity across the lunar South Pole region. • Delivery of up to 60 tons of cargo through as many as 24 landings using low-, medium-, and heavy-class cargo landers. Phase Three (2032 and Beyond): Sustained Human Presence This phase will scale operations to achieve a true enduring presence, with routine crew rotations and continuous surface activity. This is when living and working on the Moon becomes a reality: • Semi-permanent habitation modules with spacious interior for crew living and operations. • Operational fission surface power systems capable of delivering steady, reliable energy through the long lunar nights, leveraging in situ resource manufacturing. • Advanced logistics networks supported by crewed and autonomous rovers to keep the base supplied and functioning year-round. • Delivery of up to 38 tons of cargo annually to sustain habitats, power systems, logistics operations, and major science outposts, enabled by low-cost reusable heavy-lift capabilities." Moon base website:

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🚨 NEWS FROM NASA In a bold and decisive move, NASA Administrator Jared Isaacman just announced a $20 billion plan to build America’s permanent base on the Moon — and they’re doing it in just 7 years. Today, NASA officially confirmed it is cancelling plans for the Lunar Gateway — the small space station that was supposed to orbit the Moon as a waypoint for astronauts. Instead, those components and resources will be repurposed directly for the surface base, accelerating humanity’s return to sustained lunar presence. The goal is clear — move beyond short visits and flags-and-footprints missions. NASA wants a real, long-term foothold on the Moon: habitats, power systems, rovers, scientific labs, and infrastructure that can support crews for months at a time. This base will serve as the foundation for deeper space exploration, resource utilization (like mining lunar ice for fuel and water), and eventually — Mars. The $20 billion investment over the next seven years will reshape major parts of the Artemis program. It comes with real urgency too — China is pushing hard toward its own crewed Moon landing by 2030, and the U.S. is determined to lead, not follow. This isn’t just about science. · A permanent lunar base means:Testing technologies for Mars missions in a real off-world environment · Developing in-situ resource utilization (turning Moon dirt into rocket fuel and oxygen) · Opening the door to a true cislunar economy · Inspiring the next generation of engineers, scientists, and explorers Private industry will play a massive role, as always — with contractors already building key hardware now being redirected. This is the kind of ambitious, focused leadership the space program has needed. From the first boots on the Moon in 1969 to building a thriving outpost there by the early 2030s — what an incredible leap forward. Significanly, the Moon isn’t just a destination anymore: it’s becoming home base for humanity’s expansion into the Solar System.

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