Sit back, relax, and look straight at the sun just this once.
Yup, it’s just what it sounds like. That’s the sun being eclipsed at the same time by both the Earth and the Moon.
Trying to watch the sun's explosions with your naked eyes is a recipe for blindness, but luckily NASA has a couple of telescopes that can show you all that fusion glory with none of the permanent ocular damage. Take, for instance, this 200,000-mile long canyon of fire.
This video of an M class solar flare condenses three hours of explosion into a dramatic 1-minute video.
The moon passed between NASA's Solar Dynamics Observatory and the sun for the first time last week, yielding this incredible eclipse photograph. Sorry, awesome solar flare in the bottom left corner, you'll have to share the spotlight this time.
This is the Atmospheric Imaging Assembly. Together with the Helioseismic and Magnetic Imager, and the Extreme Ultraviolet Variability Experiment, it will capture the Sun at IMAX resolution every ten seconds. They will travel together inside NASA's Solar Dynamics Observatory spacecraft.