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5 giorni fa · Learn how gravity is the force that pulls objects toward each other and keeps them in orbit around the sun and other planets. Find out how gravity affects Earth's gravity, the moon's gravity, stars' gravity, black holes' gravity and more.
Learn about gravity, a natural phenomenon by which all things with energy are brought toward one another, and its effects on the universe, Earth, and physical objects. Explore the general theory of relativity, the equivalence principle, the gravitational field, and the relation between mass and inertial mass.
1 giorno fa · La Stazione Spaziale Internazionale non è un ambiente a gravità zero: allora perché vediamo gli astronauti e gli oggetti galleggiare a mezz’aria? La Iss si trova a circa 400 km di altitudine dove il campo gravitazionale terrestre è quasi il 90% della sua forza in superficie ma proprio la gravità la mantiene in orbita.
4 giorni fa · Gravity is one of four fundamental interactions. The most precise description of this force is still provided by Einstein's General Theory of Relativity, published in 1915, an entirely classical ...
1 giorno fa · Ethan Siegel. For more than 50 years, there’s been a mystery about the Universe that the greatest minds in physics and astronomy have been unable to solve: the fact that, when we map out all of ...
5 giorni fa · Melroy e i suoi colleghi della NASA sono particolarmente preoccupati per i rischi che corrono la Stazione Spaziale Internazionale e gli astronauti a bordo, rischi drammatizzati dal film Gravity del 2013, in cui Sandra Bullock è costretta a fuggire dall'avamposto orbitante.
5 giorni fa · A galaxy is a huge collection of gas, dust, and billions of stars and their solar systems. A galaxy is held together by gravity. Our galaxy, the Milky Way, also has a supermassive black hole in the middle. When you look up at stars in the night sky, you’re seeing other stars in the Milky Way.
