May 28, 2025 · Introduction. What is a planet? The word goes back to the ancient Greek word planēt, and it means "wanderer." A more modern definition can be found in the Merriam …

May 13, 2025 · The Saturn V was a rocket NASA built to send people to the moon. The Saturn V was a type of rocket called a Heavy Lift Vehicle. That means it was very

Apr 28, 2025 · The solar system has one star, eight planets, five dwarf planets, at least 290 moons, more than 1.3 million asteroids, and about 3,900 comets.

Mar 12, 2025 · Saturn has 274 confirmed moons in its orbit, far more than any other planet in our solar system. In March 2025, astronomers confirmed the discovery of 128 small moons around …

May 14, 2025 · Titan’s Chemistry. Titan is an object of high astrobiological interest due to its complex organic (carbon-containing) chemistry. Organic molecules form the basis of all life on …

Apr 21, 2025 · Like fellow gas giant Jupiter, Saturn is a massive ball made mostly of hydrogen and helium. Saturn is not the only planet to have rings, but none are as spectacular or as …

May 22, 2025 · Four robotic spacecraft have visited Saturn. NASA's Pioneer 11 provided the first close look in September 1979. NASA's twin Voyager 1 and Voyager 2 spacecraft followed up …

Nov 20, 1990 · This color image of Saturn was taken with the HST's Wide Field and Planetary Camera (WF/PC) in the wide field mode at 8:25 A.M. EDT, August 26, 1990, when the planet …

May 19, 2025 · The Voyager and Pioneer flybys of the 1970s and 1980s provided rough sketches of Saturn’s moons. But during its many years in Saturn orbit, NASA’s Cassini spacecraft …

Nov 3, 2024 · On July 29, 2011, Cassini captured five of Saturn’s moons in a single frame with its narrow-angle camera. Moons visible in this view: Janus (111 miles, or 179 kilometers across) …