A Japanese space probe dropped a capsule containing two samples from the 4.6-billion-year-old Ryugu asteroid above Earth on Saturday, as scientists await the arrival of materials that could help explain the origin of life.The capsule, released from the Japan Aerospace Exploration Agency's Hayabusa2 space probe, is due to reenter Earth's atmosphere early Sunday before landing in a desert of southern Australia, according to JAXA.The specimens, which are estimated to weigh one gram in total, include the world's first sub-surface asteroid sample. Scientists hope the primordial materials will he…READ FULL ARTICLE