Show:
Stars
Galaxies
The Universe
The Sun
Space Junk
100
The apparent movement of a star when seen from a different position
What is parallax?
100
The name of our galaxy.
What is the Milky Way?
100
This is often used to detemine a star's distance from Earth.
What is parallax?
100
Our sun has about this much time left to "live".
What is 5 billion years?
100
The diagram that shows that main sequence stars increase in brightness as they increase in temperature.
What is the Hertzsprung Russell Diagram?
200
More than half of all stars are in groups of two or more stars called:
What is binary stars or star clusters?
200
The type of galaxy that Earth is located in.
What is a spiral galaxy?
200
The distance that light travels in a year.
What is a light year?
200
Our sun will become this when it dies.
What is a black dwarf?
200
The instrument that breaks light into color according to wavelength.
What is a spectrograph?
300
A giant ball of hot gases that undergoes nuclear fusion.
What is a star?
300
Galaxies that have active black holes in their center.
What are quasars?
300
The reason why a super giant lives ashorter life than a red giant.
What is because they are bigger and therefore burn fuel faster.
300
The region of the sun that undegoes nuclear fusion.
What is the core?
300
What 90% of stars on the Hertzsprung Russell Diagram can be found.
What are the main sequence stars?
400
The color of the hottest and the coolest stars.
What is blue white and red.
400
These galaxies are more spaced out and contain older stars.
What are elliptical galaxies?
400
The spectral class where the coolest stars are found.
What is spectral class M?
400
How nuclear fuison powers the sun.
What is the combining of lightweight particles into heavier particle release a great deal of energy.
400
The cloud of dust and gas where stars begin.
What is a nebula?
500
The absolute magnitude of a star depends on this.
What is distance and brightness?
500
The force the pulls together the matter in stars and galaxies.
What is gravity.
500
The two factors that Newton concluded combine to keep the Earth in orbit.
What is inertia and gravity?
500
The reason that sunspots appear darker.
What is because they are cooler and are caused by magnetic disturbances.
500
The two things that impact the strength of gravity.
What is the masses of the objects and the distance between them?