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Há 2 dias · The Moon is Earth 's only natural satellite. It orbits at an average distance of 384,400 km (238,900 mi), about 30 times the diameter of Earth. Over time Earth's gravity has caused tidal locking, causing the same side of the Moon to always face Earth.
Há 1 dia · At the largest scale, galaxies are distributed uniformly and the same in all directions, meaning that the universe has neither an edge nor a center. At smaller scales, galaxies are distributed in clusters and superclusters which form immense filaments and voids in space, creating a vast foam-like structure. [14]
Há 5 dias · Learn about astronomy, the science of studying extraterrestrial objects and phenomena, from Britannica. Explore the history, methods, and achievements of astronomy, as well as its related fields of astrophysics and cosmology.
Há 1 dia · As of 2022, the precise location of the Solar System in the clouds is an open question in astronomy. Within ten light-years of the Sun there are relatively few stars, the closest being the triple star system Alpha Centauri, which is about 4.4 light-years away and may be in the Local Bubble's G-Cloud.
Há 1 dia · The most prominent stars have been categorised into constellations and asterisms, and many of the brightest stars have proper names. Astronomers have assembled star catalogues that identify the known stars and provide standardized stellar designations. The observable universe contains an estimated 1022 to 1024 stars.
Há 2 dias · Galileo has been called the father of observational astronomy, modern-era classical physics, the scientific method, and modern science.
Há 3 dias · Astrophysics and astronomy are the application of the theories and methods of physics to the study of stellar structure, stellar evolution, the origin of the Solar System, and related problems of cosmology.
