An exploding star gets split into four images due to a passing galaxy.
A new study showed that thin mid-level clouds have a cooling effect that could equalize the warming effect of cirrus clouds.
Skeleton remains excavated from an Anatolia fossil site known as Kumptepe reveal more about the transition humans made from a hunter-gather lifestyle to organized farming 8,000 years ago.
Using an advanced infrared camera, researchers have made methane emissions visible. This may help monitor and measure striking levels of greenhouse gases.
A male's sperm has one job -- to fertilize a female's eggs. So why is sperm from rodents so much longer than that of larger mammals, such as primates, tigers and even whales? Researchers may now have the answer.