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.
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.
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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.
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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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NASA began the countdown Monday for humanity's first launch to the moon in 53 years.
Space Exploration
Mar 31, 2026
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In September 2022, humanity crashed a spacecraft into an asteroid—on purpose. The objective of NASA's Double Asteroid Redirection Test (DART) was to see if we could intentionally modify the orbit of Dimorphos, the small moonlet ...
Space Exploration
Mar 30, 2026
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