Earth’s trusty magnetic field has been keeping the planet safe for at least 3.7 billion years. There’s a chance it might have formed even earlier than this, but the evidence is shaky and less widely ...

Earth's magnetic field may have been similarly as strong 3.7 billion years ago as it is today, pushing the earliest date for this planetary protective bubble back 200 million years. "When we're ...

WASHINGTON — A year from now, the U.S. Navy hopes to launch a pair of small satellites that are able to harvest electrons from space and use them and the Earth’s magnetic field as a propulsion system.

Researchers have known for awhile that Jupiter has a huge magnetic field that dwarfs our own. Most assumed that the field was similar to Earth's with magnetic force lines exiting one pole of the ...

Magnetic fields in NGC 1086, or M77, are shown as streamlines over a visible light and X-ray composite image of the galaxy from the Hubble Space Telescope, The Nuclear Spectroscopic Array, and the ...

The Pluto-size ball of solid iron that makes up Earth's inner core formed between 1 billion and 1.5 billion years ago, according to new research. What's more, the new findings suggest that Earth's ...