br China is about to make space exploration history.br br Around 1:30 p.m. EST, the country's space agency is launching a lunar-landing mission to the moon's far side, which is hidden from Earth's view.br br The mission seeks to gently touch the spacecraft down on the surface — a feat that no country has ever attempted.br br The Chinese moon mission is called Chang'e-4. The mission's rover and lander could take unprecedented measurements of the rocks and lunar soil on the moon's far side.