Some weapons used by the U.S. military are so powerful they can pose a threat to the people who fire them. When weapons are fired, an invisible blast wave travels through the brains of anyone nearby.

When military personnel fire certain powerful weapons, they are exposed to a blast wave that sends blood surging from the body to the brain. This "tsunami in the body" is one way a blast can injure ...

Dust particles form as dying red giant stars throw off material and become part of interstellar clouds of various sizes, densities and temperatures. his cosmic dust is then destroyed by supernova ...