ScienceStartup Wants To Use Mercury In New Propulsion Systems A company has reportedly been developing new propulsion systems that will use mercury. While NASA has experimented with mercury in the past, there have been concerns over exposing people to the toxic chemical.by Diane Samson
ScienceAsteroid 2018 VX1 Will Zip By Earth Today: How And When To Watch This Celestial Eventby Susan Kim
ScienceHarvard Scientists Say Mysterious Cigar-Shaped Object 'Oumuamua May Have Been Alien Spacecraftby Diane Samson