The Earth and Sky
The brightest object in the sky.
The number of planets in the solar system.
8 (Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune)
Exoplanets may help us discover ___ on other planets.
Life.
True or false, our sun is a very 'average' star.
True.
The approximate age of the universe.
14 billion years old.
The time it takes the Earth to make a full revolution.
The outer planets are often referred to as "____ Giants".
Gas Giants.
The method to detect exoplanets which uses the dimming of light from as star as the exoplanet passes in front of our line of sight.
Transit method.
Stars are born in big gas clouds called ____.
Nebulae.
The name of our home galaxy.
The Milky Way
The apparent shapes made by connecting stars with lines.
Constellations.
The planet known for its amazing rings.
Saturn.
Exoplanets that are the exact distance from their star to have the temperature required to maintain liquid water are said to be in the ____ zone.
Habitable zone. "Goldilocks" zone.
Clouds of gas can collapse into stars due to the force of ____.
Gravity.
A 'large explosion' that describes the origin of the universe.
Big Bang.
The brightest object in the NIGHT sky.
The moon.
Asteroid belt.
The most common types of exoplanets.
Super-Earths.
Cool stars are ____ in color, while hot stars are ____ in color.
Blue-ish, red-ish.
The universe is getting ____ over time.
Larger, bigger.
The idea that the sun is at the center of the solar system, rather than the Earth.
Heliocentric model.
The sun occupies roughly this percentage of mass in the solar system.
99 percent.
The name for the time it takes for an exoplanet to complete one orbit around its star.
Orbital Period.
Stars spend the majority of their lives fusing ____ in their cores.
Hydrogen.
The universe may continue to exist for ____ amount of time.
an inifnite.