It is well known for the Good Housekeeping Seal, popularly known as the Good Housekeeping Seal of Approval.. The magazine was founded May 2, 1885 by Clark W. Bryan in Holyoke, Massachusetts. The magazine achieved a circulation of 300,000 by 1911, at which time it was bought by the Hearst Corporation.
Gravity, Forces, magnetism. Jupiter's moons stay in orbit because gravity pulls them towards Jupiter. it mainly happens like a game of tug of war. Two forces are included, one pulls the moons towards Jupiter, the other one pulls them towards space.
The four Galilean satellites are, in order from Jupiter, Io, Europa, Callisto and Ganymede. Each of these worlds orbits Jupiter in what is called a prograde motion, or aligned with the planet's rotation. The three inner moons tug at each other with every orbit and have settled into a stable tidal resonance with each other of 3:2. This resonance means that for every orbit Callisto completes, Europa circles Jupiter twice, and for every single orbit Europa completes, Io orbits Jupiter twice, according to NASA.