magnetic field
Venus Compared to Earth
Venus and Earth share many characteristics, being terrestrial planets, but are also significantly different. Here's how and where they differ...
What Are The Uses Of Electromagnets?
Electromagnets, which rely on electrical current to generate magnetic fields, are used to powering everything from medical equipment to consumer…
Jupiter’s Moon Ganymede
In 1610, Galileo Galilei looked up at the night sky through a telescope of his own design. Spotting Jupiter, he…
How We’ve ‘Morphed’ From “Starry Night” to Planck’s View of the BICEP2 Field
From the vantage point of a window in an insane asylum, Vincent van Gogh painted one of the most noted…
What Causes the Northern Lights?
Have you ever seen the beautiful auroral displays in the high latitudes? These are the Northern and Southern Lights. But…
Move Over, Gravity: Black Hole Magnetic Fields May Have Powerful Pull
It's oft-repeated that black holes are powerful gravity wells, because they represent a dense concentration of matter in one location.…
Spectacular Aurora Sneaks in Quietly, Rages All Night
Expect the unexpected when it comes to northern lights. Last night beautifully illustrated nature's penchant for surprise. A change in…
‘Will We Soon Find Ourselves Back In The Stone Age?’ Why Swarm Is Watching Our Magnetic Field
A satellite triplet was born last week. The European Space Agency's Swarm constellation flew into space on Friday (Nov. 22)…
Voyager 1: Is It In or Is It Out?
Nearly 18.7 billion kilometers from Earth -- about 17 light-hours away -- NASA's Voyager 1 spacecraft is just about on…
Weekly Space Hangout – August 9, 2013
Gather round the internets for another episode of the Weekly Space Hangout. Where our experienced team of journalists, astronomers and…