Inside History on Instagram: "This video offers a captivating look at the key stages of human embryonic development—from fertilization to the early formation of organs. It begins with a single-cell zygote and follows its journey through rapid cell division, implantation in the uterine wall, and the formation of the blastocyst. As development continues, the animation highlights major biological milestones such as gastrulation, germ layer formation, cell differentiation, and the emergence of primi

What Are Elliptical Galaxies?