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6th, U1, L1 - Structure of the Universe

Horizontales
Greek philosopher who thought Earth was the center of all things.
A shift in position of an object when viewed from different locations.
The process of energy produced in stars, such as hydrogen and helium.
A large cloud of gas and dust in space, found in the arms of spiral galaxies and throughout irregular galaxies.
The distance that light travels through space in one year.
Model of the Solar System that is Sun-centered, Earth and the other planets orbit the Sun.
Greek astronomer that first proposed the heliocentric model of the solar system.He also contributed to the first attempt of measuring distances to the moon and sun.
A large celestial body that is composed of gas and emits light.
Egyptian astronomer whose book, Almagest, is based on observations of planets going back 800 years, and developed a geocentric model that was used by astronomers for the next 14 centuries.
Verticales
A gigantic explosion in which a high-mass star throws it's outer layers into space.
Scientist use to describe space and all of the energy and matter in it.
Earlier models of the Solar System believed the Earth was the center, with the sun, moon, and planets circling it.
A large collection of stars, gas, and dust that is held together by gravity.
The collection of large and small bodies that orbit the our central star, the Sun.
Polish Astronomer that adopted an updated heliocentric model that is seen as the first step in the development of modern models of the solar system.
A special place that holds certain gases in the atmosphere that keep temperatures warm enough for life to exist.
Eight large spherical bodies that orbits the Sun.
Areas in the universe where galaxies are densely concentrated.
The nearest star to Earth