History quiz #1 Flashcards
What is the Big Bang Theory?
Before the Big bang, Astronomers believed that there were very few things in space. When the Big bang happened all of the universes were created including ours.
What are the terrestrial planets?
Mercury, Venus, Earth, and Mars. The four planets closest to the sun, primarily composed of rock and metal.
What are the gas giants?
Jupiter, Saturn, Uranus and Neptune. The four huge outer planets, composed mostly of ice and gas
What is the Voyager 1?
The Voyager 1 is the first man-made object to leave the solar system and it holds the golden record.
What was the golden record’s purpose?
The golden record’s purpose is to play human sounds if the Voyager 1 reaches other life forms.