Earth Related
The number of days it takes for the earth to make one orbit around the sun
365.24
Groups of stars that seem to form distinctive patterns
What are constellations
A meteoroid that falls towards earth and burns up in the atmosphere and produces a streak of light.
What is a meteor
A telescope that detects visible light
What is an optical telescope
When a solar flare hits the earth
When both hemispheres are equally distanced from the sun. Occurs during the Spring and Fall
What is the equinox
These planets are known to have solid rocky cores
What are the inner planets/ terrestrial planets
The theory that the universe started expanding after one event
The big bang theory
Space equipment that makes observations by landing on planets
What are landers
Varying types of energy waves that range from visible light, to x-rays, to gamma rays, among others
What is the Electromagnetic spectrum/Electromagnetic radiation
When the sun and moon's gravitational force combine to produce tides that are higher than normal
What are spring tides
The apparent change in motion direction of planets as Earth passes them. Basically the planets look like they are going backwards
What is retrograde motion
A very young star
What is a protostar
Space equipment that orbits the Earth that is responsible for letting us watch TV, use GPS, and listen to the radio
What are Satellites
The explosion of the outer portion of a star
What is a supernova
The theory of the solar system that says the sun, planets, and stars orbit around a stationary Earth
What is the Geocentric Model
What are comets
Objects that circle the sun beyond the orbit of Neptune
What are trans-Neptunian objects
Space equipment that makes observations by orbiting other planets
What are orbitors
The surface of the sun
The photosphere
The model of the solar system that says that the earth and other planets orbit around the sun
What is the Heliocentric Model
The unit that is represented by the average distance from the sun
What is an astronomical unit
The theory around how stars form; says that planets and starts formed together.
What is the Solar Nebula Theory
An instrument that produces a pattern of colours and lines from a narrow beam of light
What is a Spectroscope
The total energy radiated by a star per second
What is luminosity