The front sandstone wall was set upright, and all the walls strengthened against collapse.

The moisture in the desert, though scarce, is enough to cause the wood to expand slightly to form a barrier against collapse, he said.

The energy thus released sustains the star against collapse.

The porch is probably medieval while the two buttresses to the west were added in 1825 to guard against collapse.

The star would suddenly have nothing to fuse, no means to support its outer envelope against collapse.

As more mass is accumulated, equilibrium against gravitational collapse reaches its breaking point.

After 60 years of operation the stability of the dam against collapse could no longer be guaranteed.

But the lingering Belgian influence was a bulwark against collapse.

Unlike a modern black hole, the object behind the horizon is assumed to be stable against collapse.

Even without external triggers, regions of the cloud can reach conditions where they become unstable against collapse.