From Nando Times

While it had long been accepted that North Americans have grown several inches on average during the 20th century, a lot more than size has changed.

The changes are apparent in the shapes and sizes of certain bones in the legs and forearms, which have changed in proportion to the rest of the body.

See a picture of a galaxy-sized shock wave that is racing outward from the center of NGC 4636 at 435 miles (700 kilometers) per second. This has come from an explosion in its galactic center with an energy equivalent to several hundred thousand supernovas. More info at NASA

The Earth-orbiting satellite BeppoSAX, the solar-spying Ulysses, and NASA's Mars Odyssey combined to detect a brief yet intense gamma ray burst.

Gamma rays are so powerful that if generated nearby, they would penetrate steel and irradiate everything to extinction. Luckily, the newly observed burst came from more than 4 billion light-years away. That's the closest gamma-ray burst ever detected, researchers said.

More at Space.com