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English: This video provides an illustration of how the Moon passes through its phases — a product of its orbit, which allows different parts of its surface to be illuminated by the Sun over the course of a month. The camera is locked to the Moon as the Earth rapidly rotates in the foreground.
The gravitational force that a celestial body exerts on a space vehicle is modeled with the body and vehicle taken as point masses; the bodies (Earth, Moon, etc.) are simplified as spheres; and the mass of the vehicle is much smaller than the mass of the body so that its effect on the gravitational acceleration can be neglected.
Lunar transfer, perspective view. TLI occurs at the red dot near Earth. A trans-lunar injection (TLI) is a propulsive maneuver, which is used to send a spacecraft to the Moon. Typical lunar transfer trajectories approximate Hohmann transfers, although low-energy transfers have also been used in some cases, as with the Hiten probe. [1]
Blue Ghost Mission 1 is a robotic Moon landing mission conducted by Firefly Aerospace, launched on January 15, 2025.As part of NASA's Commercial Lunar Payload Services program, the mission aims to deliver ten scientific investigations and technology demonstrations to support future human exploration of the Moon under the broader Artemis program.
People on the beach in Cape Canaveral watch the historic maiden launch of the Blue Origin New Glenn rocket launched at 2:03 a.m. EST January 16th from Launch Complex 36 at Cape Canaveral Space ...
Parking phase. The spacecraft is launched as a secondary payload and gets released into selenocentric orbit by the carrier. During the 14 days of this phase the CubeSat will begin commissioning. Transfer phase. LUMIO performs a stable manifold injection maneuver (SMIM) and begins the transfer towards the L2 point. This phase has a duration of ...
Aerocapture is an orbital transfer maneuver in which a spacecraft uses aerodynamic drag force from a single pass through a planetary atmosphere to decelerate and achieve orbit insertion. Aerocapture uses a planet's or moon's atmosphere to accomplish a quick, near-propellantless orbit insertion maneuver to place a spacecraft in its science orbit ...
For a selected few of the lunar inequalities, Newton showed in some quantitative detail how they arise from the solar perturbing force. Much of this lunar work of Newton's was done in the 1680s, and the extent and accuracy of his first steps in the gravitational analysis was limited by several factors, including his own choice to develop and ...