Apparent retrograde motion notable on Mars which has two natural satellites, Phobos and Deimos. Both moons orbit Mars in an eastward (prograde) direction, however Deimos has an orbital period of 1.23 Martian sidereal days, making it supersynchronous, whereas Phobos has an orbital period of 0.31 Martian sidereal days making it subsynchronous. Consequently, although both moons are travelling in an eastward (prograde) direction, they appear to be travelling in opposite directions when viewed from the surface of Mars due to their orbital periods in relation to the rotational period of the planet. All other planetary bodies in the Solar System also appear to periodically
One Is the Other his superb quartet constantly hint at references from all over the jazz tradition". Steve Greenlee wrote in "JazzTimes" that "The Billy Hart Quartet gets more laidback with each release. "One Is the Other" is the group’s third effort (and second on ECM), and it is a demonstrably looser, freer affair than its predecessors. It’s as though the veteran drummer and his younger compadres—tenor saxophonist Mark Turner, pianist Ethan Iverson, bassist Ben Street—decided they’d proven themselves and can now take more risks with their music". "All About Jazz" correspondent John Kelman observed "with ECM paying increasing attention to North American musicians—with