It was expanding. And that,Hubble said, meant it probably began with an explosion of unimaginable force.

VOA: special.2009.04.29

The International Red Cross has described the humanitarian situation as "unimaginable."

VOA: special.2009.05.16

Four months ago Elder spoke about what he called the "unimaginable hell" suffered by Tamil children caught in the conflict.

VOA: standard.2009.09.06

Colville calls this is an almost unimaginable situation for children and other civilians to have to live through for even one day, let alone months on end.

VOA: standard.2009.10.25