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 …

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 …

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 …

Dec 17, 2020 · Gravity is the force by which a planet or other body draws objects toward its center.

Sep 25, 2025 · Jupiter's strong gravity constantly tugs on Europa. The pull is strongest on the side that always faces Jupiter. When Europa is close to Jupiter in its orbit, Jupiter’s gravity pulls …

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 …

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 …

Sep 25, 2025 · Mercury is the smallest planet in our solar system. It’s just a little bigger than Earth’s Moon. Mercury itself, though, doesn’t have any moons. It is the closest planet to the …

Sep 25, 2025 · That's the ruler's center of mass. The center of mass is also called the center of gravity. But sometimes the center of mass is not in the center of the object. Some parts of an …

Sep 25, 2025 · Structure and Surface Neptune is encircled by six rings. Neptune, like Uranus, is an ice giant. It’s similar to a gas giant. It is made of a thick soup of water, ammonia, and …