In astrodynamics, the orbital eccentricity of an astronomical object is a dimensionless parameter that determines the amount by which its orbit around ...

Abstract: We present theoretical calculations for the differential distribution of stellar orbital eccentricity in a galaxy halo, assuming that the stars constitute a spherical, collisionless system ...

Map of Mars with the tropics (±25°) shaded. With sufficient greenhouse warming, the first tree on Mars grows outside the ...

Researchers led by Professor Robert Olszewski from Warsaw University of Technology have analysed how much greenhouse warming, ...

The group's focus is on the revolutionary design, proven manufacturing processes and rigorous testing to deliver superiority in UAV propulsion systems and flight critical components.

We talk about rockets and low Earth orbit (LEO) a lot, but we rarely explain where it is and why it's essential. Let's figure ...

We've found volcanic exoplanets before. They tend to be rocky worlds with characteristics that indicate volcanism, such as ...

Abstract: Eccentricity is common in electrical machines due to the manufacturing error and assembly deviation, which can distort the back electromotive force (EMF ...