Solar System
What are the 4 terrestrial planets in our solar system?
Mercury, Venus, Earth, and Mars
When did the US land on the moon?
1969
What was the event that started universal expansion
The Big Bang
What process does a star have to go through in order to release energy
Nuclear Fusion
What is the term for a planet located outside the solar system?
What planet has the most moons?
Saturn (274 moons)
Who was the first human to leave Earth's atmosphere
Yuri Gagarin
What were the first elements formed in the universe
1. Hydrogen
2. Helium
3. Lithium
What type of galaxy is the Milky Way?
Spiral Galaxy
What is the invisible stuff that holds galaxies together?
The gravity of Dark Matter
What object covers 99.8% of the total mass of the solar system?
The Sun
Who discovered the Andromeda Galaxy?
Edwin Hubble
How old is the solar system
What type of star is the Sun?
Main Sequence Star
What is a light year?
The distance light travels in 1 year
How many confirmed dwarf planets are there in the solar system?
5 (Ceres, Pluto, Haumea, Makemake, and Eris)
Who discovered Jupiter's largest moons and Saturn's rings?
Galileo Galilei
When did the earliest Galaxies form?
200-500 million years after the big bang (or about 13.5 billion years ago)
Name the three objects a massive star becomes at the end of it's life
1. White Dwarf Star
2. Neutron Star
3. Black Hole
What is the coldest planet in the solar system?
Uranus (-320°F or -195°C)
When was Pluto discovered?
1930
How old is the universe?
13.8 billion years old
Name the closest star to the sun and the distance
Proxima Centauri (4.25 light years)