What is the name of the line of latitude represented by the letter D? A)
Tropic of Capricorn
B)
Tropic of Capricorn
Antarctic Circle
D)
Arctic Circle

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