The energy that is present even in otherwise empty space. This energy has been measured to exist (in the "Casimir Effect"). Whereas matter causes the expansion of the Universe to slow down, vacuum energy actually causes the expansion to speed up.
Time writes no wrinkle on thine azure brow, Such as creation's dawn beheld, thou rollest now.
Lord Byron's Childe Harold's Pilgrimage, Canto IV, Stanza 182
The SXS project is a collaborative research effort involving multiple institutions. Our goal is the simulation of black holes and other extreme spacetimes to gain a better understanding of Relativity, and the physics of exotic objects in the distant cosmos.
The SXS project is supported by Canada Research Chairs, CFI, CIfAR, Compute Canada, Max Planck Society, NASA, NSERC, the NSF, Ontario MEDI, the Sherman Fairchild Foundation, and XSEDE.