8th grade Universe Stars Review Example For Students

8th grade Universe Stars Review Term Definition Expanding The Big Bang theory tells us that the universe has been and still is __________ Nebula A large cloud of dust and gas that becomes a star Nuclear Fusion The way stars produce energy Milky Way The galaxy in which our solar system exists Andromeda What is the closest spiral galaxy to our galaxy Temperature A physical property that is part of the basis for the HR Diagram Spiral The Milky Way galaxy is this type of galaxy Event Horizon The edge of a black hole Constellations Patterns of stars in the sky Redshift Evidence that the universe is expanding Main Sequence Our sun is this type of star Clouds of Magellan Two irregular galaxies that orbit our galaxy Electromagnetic _______ waves can move through the vacuum of space Light years Extremely large distances in space Universe Something that is approximately 12 to 14 billion years old Yellow The color of a medium temperature star Red Giant A star that has used up all of its hydrogen becomes larger and cooler Gamma rays The highest energy waves that come from stars Luminosity Another expression that means brightness Irregular The type of galaxy that is the smallest Distance What is measured by light-years Parallax Changing star location by earths movement which allows us to calculate how far away they are cool The temperature of orange and red colored stars Galaxy A large group of stars held together by gravity Black Hole One possible result after a star goes supernova White Dwarf After a Red Giant star collapses slowly the very hot tiny dense star that remains Steady state Theory Theory that the universe was and always has been as it is now Super nova Giant stars that collapse quickly and explode out Red Color with the longest wavelength Blue Shift The change in light that is getting closer