Can strongly lensed type Ia supernovae resolve one of cosmology's biggest controversies?

In 1929 Edwin Hubble surprised many people - including Albert Einstein - when he showed that the universe is expanding. Another bombshell came in 1998 when two teams of astronomers proved that cosmic expansion is actually speeding up due to a mysterious property of space called dark energy. This discovery provided the first evidence of what is now the reigning model of the universe: "Lambda-CDM," which says that the cosmos is approximately 70 percent dark energy, 25 percent dark matter and 5 per...