To measure this local field strength, the first item needed is a working compass. With the compass aligned to north, a magnet is placed with its poles aligned at a right angle to the compass.

Depending on the object's shape, its centre of mass can be inside or outside it. Gravitational field strength (g) is measured in newtons per kilogram (N/kg). The Earth's gravitational field ...

The space agency's satellites and spacecraft are particularly vulnerable to the weakened magnetic field strength within the anomaly, and the resulting exposure to charged particles from the Sun.

Jupiter’s magnetic field is so vast that its magnetosphere extends out as far as the orbit of Saturn! The presence, strength, and orientation of a body’s magnetosphere can tell scientists a ...