Huge ‘Swiss Cheese’ Bubble Surrounding Earth Mapped in Incredible New Images

Huge ‘Swiss Cheese’ Bubble Surrounding Earth Mapped in Incredible New Images

Huge ‘Swiss Cheese’ Bubble Surrounding Earth Mapped in Incredible New Images

A huge “superbubble” 1,000 light-years wide surrounds our planet. Today, astronomers have made the first-ever 3D map of its magnetic field.

The gigantic structure, known as a “local bubble”, is a hollow blob of hot, diffuse plasma enclosed in a shell of cold gas and dust on the surface of which stars are forming. This is just one of many hollows found in the Milky Way – making our galaxy look like a huge slice of Swiss cheese.

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