Web5 de dez. de 2024 · Brainly User Answer: Cosmic rays are mainly created by supernova explosions. Explanation: Cosmic rays are particles which come from outside of the solar system. They consist of mainly protons. With some alpha particles, heavier atomic nuclei and electrons. There is evidence that most cosmic rays originate from supernova … Web22 de fev. de 2024 · galaxy, any of the systems of stars and interstellar matter that make up the universe. Many such assemblages are so enormous that they contain hundreds of billions of stars. Nature has provided an immensely varied array of galaxies, ranging from faint, diffuse dwarf objects to brilliant spiral-shaped giants. Virtually all galaxies appear …
New questions in Geography - Brainly
Web13 de jul. de 2024 · 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 … WebOne says that galaxies were born when vast clouds of gas and dust collapsed under their own gravitational pull, allowing stars to form. The other, which has gained strength in recent years, says the young … how much are neck tattoos
What Is a Galaxy? NASA Space Place – NASA Science for Kids
Web4 de set. de 2012 · Heavy elements – 'metals' in astronomer-speak – are created within stars and then spewed out across the cosmos by supernovas. Scientists are now asking: when did the universe have enough metals t Web14 de dez. de 2024 · MVB. Galaxies are present in many different shapes and sizes . Galaxies can be classified according to their shapes: spiral, elliptical, or irregular. Edwin Hubble devised another classification for galaxies. His system included elliptical and spiral galaxies but excluded irregulars. He classified spiral and barred spiral galaxies further … Web16 de out. de 2024 · There galaxies are made up of masses of old, red stars that all formed around the same time. Elliptical galaxies have no gas for making new stars. The elliptical galaxy M87 (left) is the largest galaxy known. It contains 3 million million stars - 15 times as many as our Milky Way. Hidden in its centre is a massive black hole. Spiral Galaxies photometer camera