magnetic field

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,…

4 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…

6 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…

7 months 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…

10 months 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…

1 year 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…

1 year 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.…

1 year 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…)

1 year 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

Astronomers Measure a 1-billion Tesla Magnetic Field on the Surface of a Neutron Star

We recently observed the strongest magnetic field ever recorded in the Universe. The record-breaking field was discovered at the surface…

2 years ago