The Sun - Science@NASA The Sun The Sun is the star at the heart of our solar system Its gravity holds the solar system together, keeping everything — from the biggest planets to the smallest bits of debris — in its orbit
What to know about summer solstice, the longest day of the year The solstice is the end of the sun’s annual march higher in the sky, when it makes its longest, highest arc The bad news for sun lovers: It then starts retreating and days will get a little
Sun - National Geographic Society The sun is an ordinary star, one of about 100 billion in our galaxy, the Milky Way The sun has extremely important influences on our planet: It drives weather, ocean currents, seasons, and climate, and makes plant life possible through photosynthesis
Sun | Definition, Composition, Properties, Temperature, Facts . . . Sun, star around which Earth and the other components of the solar system revolve It is the dominant body of the system, constituting more than 99 percent of its entire mass The Sun is the source of an enormous amount of energy, a portion of which provides Earth with the light and heat necessary to support life