Scientists will use FAST to look for magnetic fields on exoplanets—a sign life could exist there.
The kauri tree, found in New Zealand, lived over 40,000 years ago.
As the tides ebb and flow, so does an elusive magnetic signal.
After hundreds of thousands of years, signs of this change are finally apparent.
The event in the Earth's upper atmosphere had been theorized before, but never detected.
Earth's magnetic field has reversed periodically throughout the planet's history. Now, we're a little closer to understanding why.