The orbital angular momentum of electrons has long been considered a minor physical phenomenon, suppressed in most crystals and largely overlooked. Scientists have now discovered that in certain ...

A research team led by Associate Prof. Wang Anting from the University of Science and Technology of China (USTC) of the ...

How is it possible for the ISS to stay in orbit? Learn more about the science behind orbiting Earth and more in this NASA "STEMonstrations" video. Credit: NASA Johnson Space Center Texas is on the ...

Most of its launch debris fell back to our planet’s surface within a decade—but a half-ton, three-foot-wide, spherical “descent craft” remained in a high elliptical orbit that looped from ...

Abstract: We propose a novel scheme for surveillance of a dynamic ground convoy moving along a non-linear trajectory, by aerial agents that maintain a uniformly spaced formation on a time-varying ...

We report spin-orbit-interaction-induced validity constraints for scalar perturbation theories, recently developed to investigate the impact of slight fiber ellipticity and fiber bends on ...

Simulations show that the stars’ tug could send Mercury, Venus or Mars crashing into Earth — or let Jupiter eject our world from the solar system.

Spacecraft that orbit around Earth do so in two types of orbits: circular and elliptical. In a circular orbit, the spacecraft is always at the same distance from the center of the Earth.

In space, aerobraking can change the orbit of a spacecraft while minimizing the use of its propulsion system and fuel. The closest point in an elliptical orbit around Earth, where the satellite or ...

leaving the craft with just enough velocity to be marooned in an elliptical orbit around our planet. Now, less than 5,000 miles (8,000 kilometers) from where it first launched from Kazakhstan's ...