For decades, scientists have pondered the mystery of the moon's ancient magnetism. Based on analyses of lunar samples, its now-deceased magnetic field may have been active for more than 1.5 billion years—give or take a ...
Space Exploration
Oct 11, 2023
0
41
The sun's strong, dynamic magnetic field can catapult huge jets of plasma known as coronal mass ejections (CMEs) out into the solar system. Sometimes these hit Earth, where they can knock out power grids and damage satellites.
Astronomy
Jun 1, 2023
0
118
Astronomers have made the most extensive study yet of how magnetically active stars are when they are young. This gives scientists a window into how X-rays from stars like the sun, but billions of years younger, could partially ...
Astronomy
Dec 15, 2022
0
216
The universe is filled with magnetic fields. Understanding how magnetic fields are generated and amplified in plasmas is essential to studying how large structures in the universe were formed and how energy is divided throughout ...
Plasma Physics
Mar 11, 2021
7
251
A conventional compass would be of little use on the moon, which today lacks a global magnetic field.
Space Exploration
Jan 3, 2020
7
1085
Researchers at CU Boulder have discovered hints that humanity's favorite star may have a dual personality, with intriguing discrepancies in its magnetic fields that could hold clues to the sun's own "internal clock."
Astronomy
Jun 12, 2019
6
876
One of the big questions in solar physics is why the sun's activity follows a regular cycle of 11 years. Researchers from the Helmholtz-Zentrum Dresden-Rossendorf (HZDR), an independent German research institute, now present ...
Space Exploration
May 28, 2019
7
1447
Contrary to what many people believe, outer space is not empty. In addition to an electrically charged soup of ions and electrons known as plasma, space is permeated by magnetic fields with a wide range of strengths. Astrophysicists ...
Plasma Physics
Nov 5, 2018
30
170
A powerful engine roils deep beneath our feet, converting energy in the Earth's core into magnetic fields that shield us from the solar wind. Similar engines drive the magnetic activity of the sun, other stars and even other ...
General Physics
Oct 29, 2018
0
106
Flows of molten metal can generate magnetic fields. This so-called dynamo effect creates cosmic magnetic fields, like those found on planets, moons and even asteroids. In the coming years, researchers are conducting a unique ...
General Physics
Mar 13, 2018
11
69
