Dimethylmercury ((CH3)2Hg) is an organomercury compound. This colorless liquid is one of the strongest known neurotoxins. It is described as having a slightly sweet smell, although inhaling enough vapor to detect its odor would be hazardous.
The formation of a star begins with gravitational instability within a molecular cloud, caused by regions of higher density-often triggered by shock-waves from nearby supernovae (massive stellar explosions), the collision of different molecular clouds, or the collision of galaxies (as in a starburst galaxy).
1 The disturbance causes clumps to form inside the cloud. 2  The clumps collapse inward drawing gas inward by gravity. 3  The collapsing clump compresses and heats up. 4  The collapsing clump begins to rotate and flatten out into a disc. 5  The disc continues to rotate faster, draw more gas and dust inward, and heat up.