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.
They took thousands of photographs and documented copious observations on their voyage around the moon, but as they sped closer to home the Artemis astronauts said Wednesday they have barely started processing the extraordinary ...
Space Exploration
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The Artemis II astronauts were jetting toward Earth and sharing their lunar flyby souvenirs Tuesday, delighting colleagues both at home and in space with captivating tales of their historic journey.
Space Exploration
Apr 8, 2026
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The four astronauts on NASA's Artemis 2 mission began their fifth day journeying to the moon on Sunday, after already taking in sights of the lunar surface never before seen by human eyes.
Space Exploration
Apr 5, 2026
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The Artemis II astronauts are already the champions of a fresh new era of lunar exploration. Now it's time to set a new distance record.
Space Exploration
Apr 5, 2026
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The Artemis astronauts have taken in sights of the moon never before seen by human eyes, crew members reported on Sunday as their spacecraft crossed the two-thirds mark on their journey to a long-anticipated lunar flyby.
Space Exploration
Apr 5, 2026
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Now more than halfway to the moon, the Artemis II astronauts prepared for their historic lunar fly-around to push deeper into space than even the Apollo astronauts.
Space Exploration
Apr 5, 2026
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As four astronauts whiz toward a flyby of the moon, looking out for them are mission control experts using cutting-edge technology and lessons learned from the Apollo program 50 years ago.
Space Exploration
Apr 4, 2026
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The Artemis II astronauts have captured our blue planet's brilliant beauty as they zoom ever closer to the moon.
Space Exploration
Apr 3, 2026
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NASA's Artemis II astronauts fired their engines and blazed toward the moon Thursday night, breaking free of the chains that have trapped humanity in shallow laps around Earth in the decades since Apollo.
Space Exploration
Apr 3, 2026
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It's humanity's first flight to the moon since 1972.
Space Exploration
Mar 31, 2026
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