What is a star?
A large celestial body that is made of gas and emits light.
What is a star?
Three or more stars that are bound together by gravity.
What are multiple stars/ multiple star systems?
The cloud of gas and dust stars form in.
What is nebulae?
The smallest and densest types of molecular clouds.
What are dense cores?
When 2 light nuclei merge to form a single heavier nucleus.
What is nuclear fusion?
Composition of a star.
What is hydrogen & helium?
The measure of a star's brightness as seen from Earth.
What is apparent magnitude?
The composition of a nebula.
What is hydrogen & helium?
The amount of years dense cores increase for.
What are 10 million years?
The leftover mass becomes _?
What is energy?
The thing that indicates the temperature of a star.
What is color?
The measure of a star's brightness as if they were at a standard distance.
What is absolute magnitude?
The thing that causes a nebula to collapse.
What is gravity?
The types of stars dense cores are birthplaces of.
What are single and binary stars?
The color of the sun.
What is yellow?
The planet that astronomers use to measure the size of other stars.
What is the sun?
Another name for nebulae.
What are star nurseries?
The temperature nuclear fusion begins.
What is 10 millionoC?
A star's outer shell from which light is radiated.
What is the photosphere?
The average temperature of a blue star.
What is 25,000oC?
A nebula that came from gas and dust thrown out by the explosion of a dying star.
What is a supernova?
What marks the birth of a star?
What is nuclear fusion?