It's time for another countdown.
NASA's compiled 25 indelible images from 2012 in a Flickr gallery.
Enjoy!
An extremely long solar filament shoots out from the sun on Aug. 31, 2012. The coronal mass ejection traveled at over 900 miles per second. The image also shows an image of Earth in the lower-left hand corner that shows the size of the CME compared to the size of our planet. MASSIVE!
A 500,000-Mile Long Solar Flare Exploded From The Sun >
A few days later the coronal mass ejection created a beautiful aurora over Canada.
The extremely rare event when Venus passes directly between the Earth and the Sun, known as the transit of Venus, was captured by NASA on June 5-6. The last transit was in 2004 and the next will not happen until 2117.
Beautiful Time-Lapse Video Of Venus Crossing The Sun >
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