Today is the first day of Spring in the Northern Hemisphere! It's time for California to wave goodbye to winter fog, and start embracing the hazy days of spring and summer. From this January 17th photo, apparently they started a bit early this year.

As for the southern hemisphere, the King of the Cosmos has you covered:

NASA Goddard is celebrating with a photo today of both the northern and southern hemispheres for a multi-season look at the Earth:

You can read more about why calling today the Spring Equinox is a misnomer on today's grouchy post by the Bad Astronomer, but I take any excuse to celebrate.

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All images credit NASA. Check out the Earth Observatory for a longer write-up on California's air quality.