The Universe Crossword Puzzle

QUESTIONS LIST:

• aphelion : object is furthest from the sun
• solar nebula : a cloud of dust and gas
• galaxy : a large collection of stars, gas, and dust that is held together by gravity.
• centripetal force : the inward force that causes objects to move in a circular path
• solar system : the collection of large and small bodies that orbit our central star.
• orbit : the path that a body follows as it travels around another body in space.
• absolute : a measure of how bright a star would be if the star were located at a standard distance.
• planet : a spherical body that orbits the sun.
• light year : the distance that light travels through space in one year.
• star : a larger celestial body that is composed of gas and emits light.
• universe : space and all the matter and energy in it.
• apparent : the measure of of a stars brightness as seen from earth.
• heliocentric : model that depicts earth and other planets orbiting the sun.
• luminosity : actual brightness of a star
• parallax : apparent shift in the position of an object when it is viewed from different locations.
• gravity : a force of attraction between objects that is due to their masses and the distance between them
• geocentric : model that depicts earth as the center of the solar system.
• perihelion : object is closest to the sun