This beautiful portrait of our nearest star was captured by NASA's Solar Dynamics Observatory (SDO), picking out the powerful and elegant loops of magnetized plasma reaching high into the sun's corona.
Astronomers have taken a census of distant spiral galaxies to help us understand what our Milky Way may have looked like in the distant past, also providing us with an invaluable look at the evolution of our own solar system.
Transport yourself to Mars and stare in wonder at these stunning views of Red Planet sunsets through our robotic explorers' eyes.
Turnabout is fair play: The full moon will be totally eclipsed early Saturday morning (April 4), just 15 days after it caused a total eclipse of the sun.
The first day of Spring began with some dazzle in Europe and the Arctic with a solar eclipse.
This week, the moon will completely cover the disk of the sun, creating a solar eclipse that only a small part of the world can see.
The most powerful solar storm of the current solar cycle is currently reverberating around the globe.
The sun has erupted with its first X-class solar flare of 2015, a not-so-subtle reminder that it can still muster the energy required to generate the most powerful class of solar explosion.
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