Is Earth bashing through walls of dark matter?

摘要

The knives are out for dark matter (see left), but our search for the cryptic stuff that may make up about 86 per cent of all matter could be set for a breakthrough - literally. Earth may be smashing through huge walls of dark matter that we could detect. According to a leading theory, dark matter is made of weakly interacting massive particles, but the hunt for WIMPs keeps coming up empty.