. Andrew Carnagie, an American industrialist said, "Take away our factories, take away our trade, our avenues of transportation, our money. Leave nothing but our organization, and in four years we shall have re-establish ourselves. Discuss​

Some gamma ray bursts are hypothesized to come from mergers of neutron stars or black holes. if this hypothesis is correct, what else should we in principle be able to detect from such mergers? a. gravitiational waves b. x-ray bursts c. significant disruption of gas thousands of light-years away in the surrounding galaxy d. an "afterglow" of bright visible light, lasting for weeks