Jan 20, 2026 · The answer is gravity: an invisible force that pulls objects toward each other. Earth's gravity is what keeps you on the ground and what makes things fall. An animation of gravity at work. …

Jan 20, 2026 · What Is Gravity? Gravity is the force by which a planet or other body draws objects toward its center. explore What Is a Black Hole? Space Place in a Snap tackles this fascinating …

Jan 20, 2026 · We know that the Moon has almost no atmosphere and only about one-sixth of Earth’s gravity. We even know that there is quite a bit of frozen water tucked away in craters near the Moon's …

Aug 29, 2022 · As our spacecraft approaches it, the gravity will be so much stronger on the side closer to the black hole than at the other side that it will get completely stretched out like a piece of spaghetti.

Jan 20, 2026 · Because the Sun is the most massive object in the solar system, its gravity makes the planets, asteroids, and comets orbit around it. Objects that are further from the Sun orbit more slowly …

Jan 20, 2026 · Interstellar space begins where the sun’s magnetic field stops affecting its surroundings. Space Place in a Snap tackles this fascinating question! Galaxies, nebulae, and supernova remnants …

Jan 20, 2026 · Before this, just about everything we knew about the universe came from studying waves of light. Now we have a new way to learn about the universe—by studying waves of gravity. …

Jan 20, 2026 · This statement is called Newton's first law of motion. Without gravity, an Earth-orbiting satellite would go off into space along a straight line. With gravity, it is pulled back toward Earth. A …

Jan 20, 2026 · How Do We Launch Things Into Space? You need a rocket with enough fuel to escape Earth’s gravity! What Is a Nebula? What Is a Solar Eclipse? Learn more about what happens when …

Jan 20, 2026 · Here are just a few reasons why: The Sun’s gravity holds our entire solar system together. Our solar system is even named after the Sun (the Latin word for Sun is “sol”). Heat from …