On Earth, depending on where you are, the analemma can be at different angles, though it always traces out this ...

As it turns out, this very quirk of orbital mechanics may be essential to the emergence of life on planets like Earth. That was the hypothesis put forth in a recent study by a team of astronomers ...

However, orbital mechanics gives us something else to celebrate this holiday season as Earth, Mars, and the sun will all align on Christmas Eve. ... At an eccentricity of 1, ...

Researchers based at Aarhus University have measured the orbital eccentricity of 74 small extrasolar planets and found their orbits to be close to circular, similar to the planets in the solar system.

Of the more than 130 planets found around distant stars, a large number have highly elliptical orbits, crazy oblong shapes that have surprised theorists who try to explain the configurations with ...

“Circumbinary orbits that are polar or highly inclined to the Earth-Moon orbit are subject to two competing effects: nodal precession about the Earth-Moon eccentricity vector and Kozai-Lidov ...

Mercury is locked into a 3/2 spin-orbit resonance where it rotates three times on its axis for every two orbits around the sun1,2,3. The stability of this equilibrium state is well established4,5 ...

As it turns out, this very quirk of orbital mechanics may be essential to the emergence of life on planets like Earth. That was the hypothesis put forth in a recent study by a team of astronomers ...