Strapped for cash in a Tokyo hotel, Albert Einstein wrote his take on life on a note and handed it to the bellboy instead of a tip. The physicist's formula for happy living fetched $1.3 million on Tuesday, a Jerusalem auction house said.

Scientists are set to make a major announcement Thursday on efforts to pinpoint the existence of gravitational waves, or ripples of space and time that transport energy across the universe.

Since Einstein, physicists have found that certain entities can reach superluminal (that means "faster-than-light") speeds and still follow the cosmic rules laid down by special relativity.