What the Heck Is This?

This might seem easy, but to guess exactly what it is would be hard for most people. Give it a try before you read on.

Need a hint? Okay: It's a lot more down to Earth than you might think.

No more hints.

Latest Videos From

Watch full video here:

This is a photo of the exhaust plume billowing out from rockets launching a space shuttle. It's the shuttle Endeavour in a night launch Feb. 8, 2010.

On Monday (May 16) Endeavour is slated to launch at 8:56 a.m. ET for its last flight. [Update: Endeavour Launched.]

• Gallery of Space Shuttle Images
• Previous What the Heck image

Got a strange or interesting photo related to science, nature or technology? What the Heck, send it to me and maybe I'll use it. And you follow me on Twitter or Facebook.