Can ghast fireballs break glass?

I'm thinking about building some glass structures in the Nether on my friends' SMP server (once 1.6 is released), and haven't spent enough time in SP to determine this for myself since I like to work on the SMP server... so, can Ghast fireballs break glass? I intend to make fully-enclosed structures that are too small for Ghasts to spawn inside of, but I want to make sure that an errant Ghast fireball fired while someone's outside won't end up destroying my structure.

I checked the wiki entry on glass, and it discusses arrows and spider jockey arrows, but nothing about Ghast fireballs.

Solution 1:

The minimum block resistance required to absorb all blast force of the Ghast's fireballs is 16.42, so less resistant blocks may be destroyed in a fireball explosion depending on exactly where it hits.

Stone, cobblestone, stone slabs, brick, and other "robust" blocks will be unaffected as they all have resistances of 30, but glass only has a resistance of 1.5, so will be destroyed easily.

Solution 2:

I believe that ghasts do not shoot at you through glass, but if you're getting shot at and they end up hitting glass, it will break. (I am not able to retest this to confirm at the moment.)

Solution 3:

Yes, Very much so.

I have a large enclosed glass room in "Hell" (My mp netherworld) that stands over a great cavern with a lava lake beneath.

If there is a single hole in the room a ghast will fireball it and blast all the glass around you sending you spiraling into the lava below.

Without holes they don't shoot at the room though.

So the answer is hell yes--I died 3 times because of this!