Every element in your body, aside from hydrogen, was forged inside a star that lived and died long before the Sun ever formed. That fact alone makes the stars life cycle one of the most important stories in science. Stars…
The universe is the totality of space, time, matter, and energy, encompassing everything from subatomic particles to the largest structures ever observed. Within this vast system, galaxies serve as the primary organizational units that make the cosmos visible and measurable.…
Cosmology is the scientific study of the origin, evolution, structure, and large-scale properties of the universe. Few questions capture human curiosity quite like how everything we observe—stars, planets, galaxies, and the vast reaches of empty space between them—came into being.…
The universe hosts objects so dense, so magnetically powerful, or so energetic that they defy ordinary intuition. Among these, black holes and extreme objects represent the outer limits of what physics allows matter and gravity to do. From stellar corpses…
What Is Paleontology? Exploring Ancient Life and the Fossil Record Paleontology is the scientific study of ancient life, pursued through the examination of fossils and the rock layers that contain them. The term combines the Greek roots palaios (“ancient”), on…
Buried within layers of rock, fossils hold a record of organisms and environments that vanished long before anyone could write them down. What fossils tell us extends far beyond the shape of an ancient bone or the outline of a…
The Mesozoic Era spans roughly 252 to 66 million years ago, a 186-million-year stretch of Earth’s history commonly known as the Age of Dinosaurs. During this time, dinosaurs emerged, diversified, and came to dominate terrestrial ecosystems across the planet. But…
The Mesozoic Era spans roughly 252 to 66 million years ago, a 186-million-year stretch of Earth’s history commonly known as the Age of Dinosaurs. During this time, dinosaurs emerged, diversified, and came to dominate terrestrial ecosystems across the planet. But…
Fossils are scattered unevenly across the planet, concentrated in the places where ancient sediments happened to form, survive, and eventually become exposed at the surface. Among the countless fossil-bearing rocks on Earth, a relatively small number of locations have produced…
Beneath every mountain range, ocean basin, and quiet suburban neighborhood lies a hidden world of rock, heat, and pressure that no human eye will ever see directly. Geophysics is the branch of Earth science dedicated to understanding that hidden world…
