Leonard Hofstadter
Search results
Mar 17, 2020 · The Big Bang theory is the most accepted scientific explanation for the origin of the Universe. It states that the Universe expanded from a tiny, dense, and hot point, and went through different stages of evolution, from radiation to matter.
Aug 22, 2023 · The Big Bang event is a theory that exists in physics which describes a possible version of our universe expanding from an initial state of high density and temperature. The work of mathematicians and astronomers has combined for decades in trying to prove or disprove this theory based on our observable universe.
Aug 19, 2020 · Learn about the universe, its size, age, composition, structure, and evolution from the Big Bang to the present. Explore the key facts, summary, and history of the universe, as well as the cosmic background radiation and the dark matter and energy.
Sep 25, 2019 · These planets and their surfaces may be heavily modified by the last, big collision they experience (e.g. the largely metal composition of Mercury or the Moon). Note: this was the theory of planetary formation as it stood before the discovery of extrasolar planets. The discoveries don’t match what the theory predicted.
Sep 29, 2020 · Learn how big is the Earth and how it compares to other planets in the Solar System. The Earth has a radius of 2.439 km and a diameter of 12.742 km, and it is the fifth largest planet in terms of mass and size.
Aug 22, 2023 · Well the Big Bang is a theoretical event that exists in physics which describes a possible version of our universe expanding from an initial state of high density and temperature. The work of mathematicians and astronomers has combined for decades in trying to prove or disprove this theory based on our observable universe. The Outward Expansion ...
Oct 31, 2023 · Learn how the universe is all of time and space, while galaxies are systems of stars and gas bound by gravity. Explore the history and theory of the universe from the Big Bang to the present day.
Jan 8, 2020 · Learn about the four main categories of galaxies: elliptical, spiral, barred spiral, and irregular. Elliptical galaxies contain mostly old stars of low mass, while spiral galaxies have a disk with a central bulge and spiral arms.
Sep 5, 2023 · Learn how galaxies are formed from cosmic inflation, Big Bang, nucleosynthesis, recombination and reionization. Discover how galaxies flatten due to their rotation and gravity, and how they vary in shape and size.
Oct 8, 2019 · Learn about the Milky Way galaxy, a spiral barred type of galaxy with around 100 billion stars and a supermassive black hole at its center. Find out its radius, age, spiral arms, dark matter, and how it will collide with Andromeda in the future.
