This region around a planet dominated by the planet's magnetic field is known as the magnetosphere. An astronaut who wanted to use a compass to get back to Earth would likely need to be within ...

Earth's core contains liquid iron which moves around. Iron is magnetic so the liquid iron causes Earth to have a magnetic field. The needle of a compass is a small magnet that can turn.

Such reversals in the Earth's magnetic field, they'd tell you ... at least during the past 160 million years, appear to peak around 12 million years ago? All these questions remain unanswered ...

Turtles can detect all Earth-strength magnetic fields, ranging from around 25,000 nanoteslas to ... and their magnetic compass (knowing which direction to go). Using radiofrequency waves ...

are known to navigate using the magnetic field lines that stretch from Earth's North to South Pole. Scientists knew the animals used this magnetic information as a compass to establish where they were ...

Dancing turtles have proved for the first time that some animals use Earth's magnetic field to create a personal ... used this magnetic information as a compass to establish where they were.