Mysteries of the Sun

Earth's Magnetosphere

The magnetosphere protects the Earth from solar wind that streams from the Sun carrying energetic, charged particles. NASA satellite observations have confirmed that the magnetosphere is always in place, but variations in the solar wind cause it to change size and shape.

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Mysteries of the Sun

Space Weather
Solar Variability
Heliosphere
Earth's Magnetosphere
Ionosphere, Thermosphere, and Mesosphere
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James Webb Space Telescope

The image is divided horizontally by an undulating line between a cloudscape forming a nebula along the bottom portion and a comparatively clear upper portion. Speckled across both portions is a starfield, showing innumerable stars of many sizes. The smallest of these are small, distant, and faint points of light. The largest of these appear larger, closer, brighter, and more fully resolved with 8-point diffraction spikes. The upper portion of the image is blueish, and has wispy translucent cloud-like streaks rising from the nebula below. The orangish cloudy formation in the bottom half varies in density and ranges from translucent to opaque. The stars vary in color, the majority of which have a blue or orange hue. The cloud-like structure of the nebula contains ridges, peaks, and valleys – an appearance very similar to a mountain range. Three long diffraction spikes from the top right edge of the image suggest the presence of a large star just out of view.

Perseverance Rover

Parker Solar Probe

Juno