SpaceGravitational waves open door to universe's most exotic objects LIGO's breakthrough discovery offers up new ways to test relativity, black hole collisions, dark energy, the first stars in the universe, and more 51¶¯Âþ
SpaceNowhere to hide - invisibility cloaks fail near light speed Researchers crossing Albert Einstein's theory of relativity with the theory of invisibility cloaks have discovered such devices won't work at high speeds 51¶¯Âþ