heliocentric
What is the heliocentric theory?
Ware the Sun is in the middle of the solar system.
What is the geocentric theory???
The geocentric theory is ware the earth is in the middle of the Universe
What is a meteor?
A small body of matter from outer space that enters the earth's atmosphere, becoming incandescent as a result of friction and appearing as a streak of light.
what is a comet?
A cosmic snowball of frozen gases, rock, and dust that orbits the sun.
What is an asteroid?
A piece of rock that orbits the sun.
How many planets are in the heliocentric theory.
6 planets.
Mercury, Venus, Earth, Mars, Jupiter, Saturn.
What is in the center of the universe in the geocentric theory?
Earth
What are meteors made up of?
Silicon and oxygen (minerals called silicates) and heavier metals like iron and nickel.
What are comets made up of?
dust, rock, and ices.
What is a asteroid made up of?
Silicate materials and nickel-iron. The M-types are metallic.
How is the heliocentric theory true?
In 1610 Galileo Galilei observed with his telescope that Venus showed phases, despite remaining near the sun in earth's sky. this proved that it orbits the sun not earth.
What made people think the geocentric theory was true?
they thought, If the heavens are divine, and the gods created men, well then the universe must be geocentric, meaning the earth is the center of the universe.
Why are meteors so bright when they enter the earth's atmosphere?
It heats up due to friction from the air.
How are comets made?
They were made 4.5 billion years ago, from dust and gas of the Protoplanetary disk.
What is the biggest asteroid.
Ceres.
what does helio stand for in heliocentric?
Sun
what does the geo stand for in geocentric?
Earth
Where are meteors located?
At the outer edge of the solar system, in the regions called Kuiper belt and the orbit cloud.
where comet located?
They can be found in the Oort cloud, and in the Kuiper belt.
where are asteroids located?
At the asteroid belt.
Who made the heliocentric theory?
Nicolaus Copernicus
Who made the geocentric theory?
Eudoxus
Who found the first meteor?
Edmond Halley
Who found the first comet?
Gottfried Kirch
Who found the first asteroid?
Giuseppe Piazzi