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| Question | Answer |
|---|---|
| Big Bang Theory | "Explains the origin of the universe, stating that all matter and energy was concentrated in one hot, dense point before an event triggered a sudden expansion and cooling." |
| Red Shift | "The change in the light from distant galaxies to longer, redder wavelengths, suggesting that these galaxies are moving away from us and the universe is expanding." |
| Cosmic Microwave Background (CMB) Radiation | "The faint, uniform radiation detected throughout the universe, which is the leftover heat energy from the Big Bang." |
| Singularity | "The infinitely hot, dense point where all matter and energy of the universe was initially concentrated." |
| Galaxy | "A massive system of stars, stellar remnants, interstellar gas, dust, and dark matter bound together by gravity |
| Solar System | "A system of a star (like the Sun) and the objects that orbit it (planets, moons, asteroids, etc |
| Protostar | A large cloud of gas and dust that has begun to collapse under gravity but has not yet begun nuclear fusion in its core |
| Main Sequence Star | "The stable, longest phase of a star's life where it is fusing hydrogen into helium in its core (like our Sun) |
| Nuclear Fusion | "The process where atomic nuclei combine to form heavier nuclei, releasing vast amounts of energy (the power source of stars) |
| Red Giant | "A large, aging star that has exhausted the hydrogen in its core and started fusing helium, causing its outer layers to expand |
| Supernova | "A powerful and luminous stellar explosion, typically occurring at the end of a large star's life |
| Black Hole | A region of spacetime where gravity is so strong that nothing—no particles or even electromagnetic radiation like light—can escape from it |
| White Dwarf | "A small, dense, slowly cooling star that is the final evolutionary stage of a small star like the Sun |
| Neutron Star | "A very dense, compact core left behind after a massive star goes supernova |
| Big Bang Theory | "The scientific theory that explains the origin of the universe, stating that all matter and energy was concentrated in one point before expanding rapidly |
| Red Shift | "The shift of light from distant galaxies toward the red end of the spectrum, indicating that they are moving away from us and that the universe is expanding |
| Cosmic Microwave Background (CMB) Radiation | "The faint, uniform electromagnetic radiation detected across the sky, which is the leftover heat energy (or ""afterglow"") from the Big Bang |
| Abundance of Light Elements | "The observed ratio of Hydrogen and Helium (about 75% H and 25% He) in the universe, which matches the amount predicted to have formed just after the Big Bang |
| Birth | Stars form in a nebula (gas/dust cloud) and contract under gravity into a protostar |
| Main Sequence | "The longest and most stable stage, where hydrogen fuses into helium in the core |
| Giant Phase | "When core hydrogen is exhausted, the core contracts, and outer layers expand and cool |
| Death | The end stage differs based on mass,"The outer layers are expelled, forming a Planetary Nebula, leaving the core to contract into a dense White Dwarf"(small),"The core collapses catastrophically, leading to a explosion called a Supernova(large) |
| Remnant | ,A cooling ember that eventually fades into a Black Dwarf,The remnant core becomes either a highly dense Neutron Star (which can be a Pulsar) or a Black Hole(small) |
Created by:
Im_Not_Stingy