Astronomy Flashcards
respectively list the planets from the sun
mercury, Venus, earth, mars, Jupiter, Saturn, Uranus, Neptune
what are asteroids made of?
Nickle and Iron
What is beyond Neptune?
The Oort Cloud, which is a space filled with comets
what are comets
giant bodies made of ice and dust
Inner/Terrestrial planets (include properties)
4 planets between the sun and the asteroid belt, solid rocky surfaces, thin atmospheres, few or no moons, no rings
outer planets (include properties)
4 planets after Mars, made of liquids and gases, have many moons and rings, much colder and bigger than terrestrial planets,
how was the solar system formed?
an interstellar cloud was drawn together due to gravity, forming planets, moons, and a star
what is an astronomical unit (AU)
the distance from the sun to the Earth which is 150million km.
How many AUs is Jupiter from the Sun
5
How far is Saturn from the Sun
9AU
solar wind of sun
supper high energy protons and electrons that are ejected from the sun
interstellar space
the point at which the materials and magnetic field from the sun stop affecting matter
interstellar wind
inward pressure from the gas in the Local Interstellar Cloud