Our Closest Star
The name of our closest star.
What is the sun?
The scientific name for a baby star is.
What is a protostar?
This type of galaxy is a round or flat disk.
What is an elliptical galaxy?
The color of the colder stars.
What is red?
The distance light travels in one year.
What is a light-year?
The two main gases found in the sun.
What are hydrogen and helium?
Most of the star's life is spent as this.
What is a main-sequence star?
These galaxies have no orderly shape and are the new baby galaxies.
What is any regular galaxy?
A star's color is most closely related to this.
What is the star's surface temperature?
A hypothesis that describes how the universe began with a huge explosion.
What is the big bang theory?
The process that converts hydrogen into helium.
What is fusion?
Stars that are 100 times larger or more than our Sun.
What is a massive star?
These galaxies are middle-aged and have arms that spiral from the center.
What is a spiral galaxy?
The death of a massive star that causes it to blow apart in a large explosion.
What is a supernova?
A large cloud of dust and gas in space.
What is a nebula?
Dark spots on the sun caused by disturbances of the sun's magnetic field.
What are sunspots?
A large reddish star late in its lifecycle.
What is a red giant?
A large group of billions of stars in empty space.
What is a galaxy?
Blue colored stars have the greatest surface temperature.
What is true?
Model of the solar system with the earth in the center. First created by the Greeks.
What is the geocentric model?
An explosive release of energy that comes from the sun and that is associated with magnetic disturbances on the sun's surface.
What is a solar flare?
A star that has collapsed under gravity to the point that the electrons and protons have smashed together to form neutrons.
What is a neutron star?
The spiral galaxy that we live in.
What is the Milky Way galaxy?
Formed by the collapse of a supergiant that has a gravitational force so strong that not even light can escape.
What is a black hole?
Model in which the Earth and the other planets orbit the sun.
What is the heliocentric model?