The planets
The rocky planets.
What are Mercury, Venus, Earth, and Mars?
Consists of the sun and a collection of objects varying in sizes and conditions that are held in orbit around the sun.
What is the solar system?
The length, in hours, it takes for the earth to make a full rotation.
What is 23.9 hours or 24 hours?
The definition of a star.
What is a space object that gives off its own heat and light?
A famous comet.
What is Halley's comet?
The gas planets.
What are Jupiter and Saturn?
What is a galaxy?
A force that pulls objects towards each other.
What is gravity?
The brightest star in our solar system.
What is the sun?
Space rock that is found in space.
What is a meteoroid?
Uranus and Neptune.
What are the ice planets?
All the existing matter and energy in space, including stars, planets, dwarf planets, dust, and all the empty space in between.
What is the universe?
The length, in days, it takes for the moon to rotate around the earth.
What is about 29 days?
A group of stars that forms a recognizable pattern in the sky.
What is a constellation?
A meteor
List all the planets starting closest to the Sun.
What is Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune?
The distance that light travels in one Earth year.
What is a light-year?
The length, in days, it takes for the Earth to rotate around the sun.
What is 365.25 days?
The Big Dipper, constellation or asterism.
What is an asterism?
Space rock that is rocky and airless.
What is an asteroid?
The five dwarf planets.
What are Pluto, Ceres, Haumea, Makemake, and Eris?
The natural science that studies everything in the universe beyond Earth's atmosphere.
What is astronomy?
When the moon's shadow blocks all or some of the sun's light from reaching Earth.
What is a solar eclipse?
How bright a star is from 32.6 light-years.
What is absolute brightness?
A cosmic snowball of frozen, gases, rock, and dust.
What is a comet?