Astrodynamics is the research area concerned with the modeling, analysis, and control of the motion of natural and artificial bodies in space under the influence of gravitational and non-gravitational forces. It encompasses orbital mechanics, trajectory design and optimization, mission analysis, attitude–orbit coupling, and perturbation theory for multi-body environments. The field integrates celestial mechanics, numerical methods, optimal control, and spacecraft propulsion modeling to enable precise prediction and adjustment of trajectories for applications such as orbit insertion, station-keeping, interplanetary transfers, formation flying, and proximity operations, often requiring high-fidelity dynamical models and robust estimation techniques for navigation and guidance.
Exiting Earth's gravity takes an enormous amount of fuel and power. Due to this, spacecraft strapped to rockets are limited in their carry capacity and every gram must be accounted for.
Space Exploration
Jan 9, 2025
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Getting places in space quickly has been the goal of propulsion research for a long time. Rockets, our most common means of doing so, are great for providing lots of force but are extraordinarily inefficient. Other options ...
Space Exploration
Dec 16, 2024
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A spacecraft that can provide the propulsion necessary to reach other planets while also being reproducible, relatively light, and inexpensive would be a great boon to larger missions in the inner solar system.
Space Exploration
Dec 10, 2024
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110
Space Station trajectory data is now available to the public! This data, called an ephemeris, is generated by the ISS Trajectory Operations and Planning Officer (TOPO) flight controllers in the Mission Control Center at NASA's ...
Space Exploration
Dec 6, 2024
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Identifying asteroids on a potential collision course with Earth could be made easier thanks to an advancement in how to track their orbits more precisely.
Planetary Sciences
Nov 25, 2024
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Placing a mass driver on the moon has long been a dream of space exploration enthusiasts. It would open up so many possibilities for the exploration of our solar system and the possibility of actually living in space.
Space Exploration
Nov 11, 2024
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In 1969, Apollo 11 astronaut Neil Armstrong stepped onto the moon's surface—a momentous engineering and science feat marked by his iconic words, "That's one small step for a man, one giant leap for mankind." Three years later, ...
Space Exploration
Nov 4, 2024
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25
What do the Earth's gravitational field and the trajectories of satellites and space debris have in common? The Earth's gravitational field influences the orbits of our companions in space, while the changes in the orbits ...
Planetary Sciences
Oct 30, 2024
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Over the span of two projects, researchers at the University of Illinois Urbana-Champaign investigated using a propulsion concept known as multimode propulsion to get spacecraft to the moon and developed a technique to design ...
Space Exploration
Oct 29, 2024
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