magnetic field

You’re Looking at a Map of the Milky Way’s Magnetic Field

Using telescopes that study the sky in the microwave part of the electromagnetic spectrum, astronomers have successfully mapped the structure…

1 week ago

Marsquakes are Caused by Shifting Magma

Before the InSight Lander arrived on Mars, scientists could only estimate what the planet's internal structure might be. Its size,…

10 months ago

We Might Know Why Mars Lost its Magnetic Field

Mars is a parched planet ruled by global dust storms. It's also a frigid world, where night-time winter temperatures fall…

12 months ago

An Exoplanet Found Protected by a Magnetosphere

Using the Hubble Space Telescope, an international team of astronomers has spotted the magnetosphere of an exoplanet for the first…

1 year ago

Why do Uranus and Neptune Have Magnetic Fields? Hot ice

The outer “ice giant” planets, Neptune and Uranus, have plenty of mysteries.  One of the biggest is where exactly they…

1 year ago

Does Mercury Have a big Iron Core Because it’s so Close to the Sun’s Magnetic Field?

Magnetic fields are great for lots of things - directing explorers, levitating trains, and containing nuclear fusion reactions are just…

2 years ago

Astronomers Confirm the Existence of Magnetic Waves in the Sun’s Photosphere

For the first time astronomers have observed waves of magnetic energy, known as Alfvén waves, in the photosphere of the…

2 years ago

How can White Dwarfs Produce Such Powerful Magnetic Fields?

White dwarfs have some surprisingly strong magnetic fields, and one team of astronomers may have finally found the reason why.…

2 years ago

Both Uranus and Neptune Have Really Bizarre Magnetic Fields

The magnetic fields of Uranus and Neptune are really, seriously messed up. And we don't know why. (more…)

2 years ago

Scientists in Japan Have Found a Detailed Record of the Earth’s Last Magnetic Reversal, 773,000 Years Ago

Every 200,000 to 300,000 years Earth's magnetic poles reverse. What was once the north pole becomes the south, and vice…

2 years ago