Moon’s Magnetism Might Have Protected Earth
The Moon's magnetic field, now long gone, might once have shielded Earth from the young Sun's radiation.
See the Invisible: A Gallery of Magnetic Fields
Magnetic fields affect everything from star formation to galaxy evolution. View a gallery of images that show magnetism's role.
Magnetism Rules in the Milky Way’s Core
Recent observations from the airborne SOFIA observatory show that magnetic fields — not gravity — govern the gas at the center of the Milky Way.
Weak Martian Magnetic Field May Have Let Air Out
Mars's magnetic field weakened and disappeared billions of years ago. Now, scientists have found that the weak field might have been worse than none at all.
Vast Magnetic "Strings" Puzzle Astronomers
New observations have revealed plasma strung along vast magnetic "strings" crossing hundreds of thousands of light-years.
Jupiter’s Magnetic Field Has Weird Structure
Juno observations reveal that Jupiter’s magnetic field has a wacky plume.
Wheel-spoke Magnetic Field in Supernova 1987A
Researchers have mapped the magnetic field in Supernova 1987A, shedding light on how stellar blasts act as particle accelerators.
How Will the Sun's Corona Look at Totality?
Updated 8/16 to include Predictive Science, Inc.'s predictions. The total solar eclipse is less than three weeks away, but researchers already have a good indication of how the Sun’s corona will look when it comes into view.
Blank Sun? Faculae to the Rescue!
Fascinating faculae provide a way for anyone with a small telescope to track the ups and downs of the solar cycle — even when there are no sunspots.