IN BRIEF Big Bang : a cosmic event marking the origin of the Universe according to the current cosmological model. Origins of the Universe : study of the conditions that preceded and followed the Big Bang. Formation Eras : the Universe evolved through the radiation era, then the matter era. String Theory : suggests that … Read more
IN BRIEF Observable universe : The visible part of the universe, limited by the cosmic horizon. Size of the universe : Estimated to be at least 96 billion light-years. Cosmic horizon : Boundary beyond which the universe remains opaque. Cosmic microwave background : Light from the Big Bang visible at about 13.8 billion light-years. Expansion … Read more
IN BRIEF Spiral galaxies: clusters of hundreds of billions of stars Structure in the shape of a disk and central bulge Formed by the collapse of hydrogen and helium clouds Spiraled arms influenced by giant molecular clouds Notable examples like the Milky Way and the Andromeda Galaxy Variety of shapes: spiral, elliptical, barred, and irregular … Read more
IN BRIEF Definition: Celestial objects with intense gravitational fields. Composition: Very compact, high mass/size ratio. Role: Impact on galaxy growth. Event horizon: The limit beyond which nothing can escape. Time travel: The gravity of a black hole allows for time dilation. Environment: Influence on galactic structures and their dynamics. Scientific research: Studies conducted to understand … Read more
