Sonic Boom

Yesterday while putting up some xmas decorations we heard this loud crash on the roof. It definitely sounded like something landed on our roof pretty violently which shook the house a bit. We couldn't find anything when we went outside to investigate. Later when eating out with Rob's mom, she mentioned that a strange thing happend at her place where something seemed to crash on her roof at the same time as ours did. Upon hearing our confusion, the lady in the next booth overheard us and told us that the space shuttle landed and that was the sonic boom. Wow. Such power in a sound wave.