Globular Cluster in constellation Aquarius.
It contains about 150,000 stars and is about 37,500 light years
Messier 2, SEDS Messier pages
is also the name of motorways
and in Northern Ireland
M2 in economics refers to the amount of cash in circulation, the amount in checking or demand-deposit accounts plus savings accounts, money market acounts and small CDs. See money supply.