astronomy: The branch of science that studies celestial bodies, space, and the physical universe. People who work in this field are called astronomers.

Behave: The way in which something, often a person or other organism, behaves or behaves towards others.

Double star: A system of two stars, one of which revolves around the other or both orbit a common center.

Cloud: A cloud of molecules or particles, such as water droplets, moving under the influence of an external force, such as wind, radiation, or water currents.

constellation: Patterns formed by prominent stars that appear to be close together in the night sky. Modern astronomers divide the sky into 88 constellations, 12 of which (known as the zodiac) lie along the path of the sun through the sky over the course of a year. Cancri, the original Greek name for the constellation Cancer, is one of these 12 zodiac constellations.

cosmic: An adjective referring to the cosmos – the universe and everything in it.

Data: Facts and/or statistics gathered for analysis but not necessarily organized to have meaning. In digital information (as stored by computers), this data is usually numbers stored in a binary code and represented as strings of ones and zeros.

eject: To suddenly or violently push or throw something from its position, container or casing.

Environment: The totality of all the things that exist around an organism or process, and the conditions those things create. “Environment” can refer to the weather and ecosystem in which an animal lives, or perhaps the temperature and humidity (or even the placement of things near an object of interest).

gamma rays: High-energy radiation, often produced by processes in and around exploding stars. Gamma rays are the most energetic form of light.

Gravity: The force that attracts anything with mass or volume to another object with mass. The more mass something has, the greater its gravity.

light year: The distance light travels in a year is about 9.46 trillion kilometers (almost 6 trillion miles). To get an idea of ​​this length, imagine a rope long enough to wrap around the Earth. It would be just over 40,000 kilometers (24,900 miles) long. Lay it out straight. Now, just behind the first rope, lay out another 236 million ropes of the same length from end to end. The total distance they now span is one light year.

mass: A number that shows how strongly an object resists acceleration and deceleration – basically a measure of how much matter the object is made of.

Object: Something that takes up space and has mass. Everything on Earth that has matter has a property called “weight.”

nova: An explosion that occurs on the surface of a white dwarf due to the accumulation and subsequent fusion of hydrogen on its surface.

observatory: (in astronomy) The building or structure (such as a satellite) in which one or more telescopes are located. Or it may be a system of structures forming a telescope complex.

planet: A large celestial object that orbits a star but, unlike a star, does not produce visible light.

Pressure: Force applied uniformly to a surface, measured as force per unit area.

radio: Refers to radio waves or the device that receives these transmissions. Radio waves are part of the electromagnetic spectrum that people often use for long-distance communication. Radio waves are longer than the waves of visible light and are used to transmit radio and television signals. They are also used in radar. Many astronomical objects also radiate some of their energy as radio waves.

red giant: A large diameter star with a relatively cool surface. This is a stage in the life of a normal star that occurs after it stops burning hydrogen. A red giant has a core where helium fuses to form carbon.

Shock waves: Tiny regions in a gas or liquid where the properties of the host material change dramatically due to the passage of an object (this could be an airplane in the air or just bubbles in water). A shock wave causes the pressure, temperature and density in an area to increase briefly and almost instantly.

star: The basic building block that galaxies are made of. Stars form when gravity condenses clouds of gas. When they get hot enough, stars emit light and sometimes other forms of electromagnetic radiation. The Sun is our closest star.

outstanding: An adjective meaning “of stars” or “relating to stars.”

Supernova: (plural: supernovae or supernovas) A star that suddenly increases in brightness due to a catastrophic explosion in which most (or sometimes all) of its mass is ejected.

system: A network of parts that work together to perform a specific function. For example, blood, vessels, and the heart are the main components of the human body’s circulatory system. Similarly, trains, platforms, tracks, road signals, and overpasses are among the possible components of a country’s railway system. The term system can also be applied to processes or ideas that are part of a method or an ordered set of procedures for accomplishing a task.

Supernova Type 1a: A supernova resulting from some binary star systems in which a white dwarf star gains material from a companion. The white dwarf eventually gains so much mass that it explodes.

White Dwarf: A small, very dense stellar remnant, now the size of a planet. It is what is left when a star with a mass roughly equal to that of our Sun has used up its nuclear fuel (hydrogen) and sheds its outer layers.