​ Terrestrial planets are Earth-like planets made up of rocks or metals with a hard surface. Terrestrial planets also have a molten heavy-metal core, few moons and topological features such as valleys, volcanoes and craters.  In our solar system, there are

​ The history of the universe: Big Bang to now in 10 easy steps (Image Credit: Space.com) The history of the universe and how it evolved is broadly accepted as the Big Bang model, which states that the

​ Sinkholes as big as a skyscraper and as wide as a city street open up in the Arctic seafloor (Image Credit: Space.com) Repeated surveys with MBARI’s mapping AUVs revealed dramatic changes to seafloor bathymetry from the Arctic

​ What is gravity? (Image Credit: Space.com) Gravity is one of the universe’s fundamental forces and dominates every moment of our conscious experience. It keeps us close to the ground, drags baseballs and basketballs out of the air

​ It’s actually good news that NASA spotted a sizable asteroid with a (small) chance of hitting Earth in 2032. It means our asteroid-sleuthing telescopes are working. “These things come through on a regular basis,” Jason Steffen, an astronomer at

​ On Dec. 27, 2024, NASA’s Juno spacecraft swooped by the volcanic world Io. It witnessed a giant eruption. As the space agency’s basketball court-sized craft orbits Jupiter, it swings near the gas giant’s intriguing moons, which allowed Juno to

​ Scientists poring over a sample brought back from the asteroid Bennu have detected amino acids and complex mineral compounds, some of which have never been found in space rocks. A team at the Smithsonian’s National Museum of Natural History

​ The James Webb Space Telescope is peering into distant worlds and rewriting our grasp of the cosmos. And in 2025, its budget is on track to get slashed. At January’s Meeting of the American Astronomical Society, Tom Brown, who

​ Scientists found an intriguing world in our galaxy. They confirmed the existence of a rocky planet, called a “super-Earth,” that’s some six times as massive as Earth. While the world HD 20794 d is larger than our planetary home,