In case you had any lingering doubts, here is some masterful cosmological/geological/geometrical instruction on our planet and its spherical — but not perfectly spherical — tendencies, courtesy of the ever-capable Henry Reich (better known as the creator, animator and narrator of MinutePhysics). Some great, if not…

Earth is changing. It's changing so fast that images like this one, which show our planet's Arctic polar ice cap in unprecedented detail, could be impossible to capture, as soon as twenty years from now.

This is a very special version of the Blue Marble: Earth captured on its entirety from an altitude of 512 miles (824 kilometers) over the North Pole. Humanity has never had an image so detailed of our home planet from this unique perspective.

Last week, NASA unveiled the highest-resolution photograph of Earth ever taken... or, rather, the highest-resolution photograph of half the Earth.

NASA said that their Blue Marble 2012 was "the most amazing image of Earth ever." Now they have released the other half, answering to popular demand.

NASA has released a new Blue Marble image, showing the United States of America. According to them, it's the "most amazing, highest resolution image of Earth ever." Blue Marble 2012 bests the 2010 edition and the original one.

This is Blue Marble. It was the most accurate, highest resolution image of Earth ever—until they created the next-gen Blue Marble. It's the most famous, since it's the iPhone's default image. Now its creator has revealed all its secrets.

After publishing the The Most Accurate, Highest Resolution Earth View to Date, it got extremely popular: The day after, countless newspapers and blogs worldwide reposted the story. NASA wrote to us, surprised. Why? Because everyone already knew about it:

This is the most accurate, highest resolution true color image of planet Earth to date. And at 2048 x 2048 pixels, you should put it in your desktop background now. You can get America too: