A later stage of freezing than frazil ice when the crystals have coagulated to form a soupy layer on the surface. Grease ice reflects little light, giving the surface a matt appearance. Grease ice beh
aves in a viscous fluid-like manner, and does not form distinct ice floes.
A hypothesized large concentration of mass (about 10^16 solar masses), some hundred million light-years from Earth, in the direction of the Centaurus supercluster, that seems to be affecting the moti
ons of many nearby galaxies by virtue of its gravity.
A hypothesized large concentration of mass (about 10^16 solar masses), some hundred million light-years from Earth, in the direction of the Centaurus supercluster, that seems to be affecting the moti
ons of many nearby galaxies by virtue of its gravity.