Sep 25, 2025 · 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. …

Sep 25, 2025 · 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 …

Sep 25, 2025 · 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 …

Sep 25, 2025 · 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. …

Sep 25, 2025 · 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 …

Sep 25, 2025 · 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 …

Aug 29, 2022 · What Is a Black Hole? The Short Answer: A black hole is an area of such immense gravity that nothing -- not even light -- can escape from it.

Sep 25, 2025 · When light from distant stars passes through a galaxy or cluster, the gravity of the matter present in the galaxy or cluster causes the light to bend. As a result, the light looks like it is coming …

Sep 25, 2025 · explore What Is Gravity? Gravity is the force by which a planet or other body draws objects toward its center. explore What Is a Satellite? A satellite is anything that orbits a planet or a …

Sep 25, 2025 · Satellites that orbit close to Earth feel a stronger tug of Earth’s gravity. To stay in orbit, they must travel faster than a satellite orbiting farther away. The International Space Station orbits …