Buildings become abandoned for many reasons, both before and after they're built. Tall skyscrapers can be especially pricey and remain unfinished.

Can you imagine how the world's tallest building, the Burj Khalifa, looks from space? NASA astronaut Don Pettit answers it beautifully by sharing the beautiful image captured from space.

Once complete, it will be the world's tallest building. It is also known as the ... any time by clicking on the unsubscribe link at the bottom of every email, or by emailing us at [email protected].

Standing at the base of the Great Pyramid, it is hard to imagine that this monument—which remained the tallest building in the world until early in this century—was built in just under 30 years.

He posted the picture on social media with the caption, "Burj Khalifa, the world's tallest building from space." Pettit has often shared some mesmerizing images of the earth from space ...