Also, if two helium white dwarfs with a combined mass of at least 0.3 solar masses collide, a helium star may be produced, with a lifetime of a few hundred million years.

Two masses of force collided between us, shook and toppled with a crack of thunder and a stink of burned sewage.

The hurtling masses in front of Sunshine collided, their vectors added, and the larger of the enemy craft fairly turned itself inside out in a splash of air and liquid, various gases that froze instantly to iridescent microscopic snow as they splashed and drifted away from the source of the explosion.

Well, she does abolish gravity, flitted through him before the beloved mass collided and clung.

Everybody there had seen pictures of what happened when the insignificant mass of a space-ship, traveling at only a hundredth of the velocity of light, collided with a planetoid.

Vicious Weather Combination The snow began falling shortly after dawn when, the Weather Service said, a huge mass of moist air from the Tennessee Valley collided with a much colder high-pressure ridge expanding south from New England.

When the two subcritical masses collided together, they would instantly go critical, and nuclear fission would occur.