Universe
The collection of all the matter, space, and energy that exists, also known as the cosmos.
What is universe?
A gravitationally dense region of space-time where nothing can escape, not even light.
What is a black hole?
The name of the galaxy our solar system is in.
What is the Milky Way?
An older star with cooler outer layer.
What is a Red Giant?
A body held together by gravity that is made of millions of stars, gas, and dust.
What is a galaxy?
The way we see other galaxies.
What is a telescope?
A large, hot star off the main sequence.
What is a Blue Giant?
The four types of galaxies.
What are elliptical, barred spiral, spiral, and irregular?
A cool, small star on the main sequence.
What is a Red Dwarf?
A massive, hot, shining ball of gas.
What is a star?
In the universe everything does this.
What is move?
The tightly-packed collapsed core of a larger star.
What is a Neutron Star?
The cluster of galaxies the Milky Way belongs to.
What is the Local Group?
The light from the star bends when it hits the Earth's atmosphere.
Why stars appear to twinkle?
A group of galaxies that are found close together.
What is a cluster?
The number of galaxies astronomers know about that can be seen from Earth.
What is approximately 100 billion?
A stellar core remnant of a low to medium mass star.
What is a White Dwarf?
The two things that astronomers believe help to determine the shape of a galaxy.
What are the amount of material, the speed of spin and the rate at which stars form.
The life cycle of a star.
What is stellar nebulae, average star, red giant, planetary nebula, neutron star?
The largest structure in the universe, composed of many galaxy clusters.
What is a supercluster?
The way astronomers measure distances outside of our solar system.
What is a light year?
A star plotted in the left-to-right band across the HR diagram.
What is a Main-sequence star?
It has a luminous core that emits huge jets of material. The center also has a glowing ring of gas and dust that surrounds a black hole.
What is an active galaxy?
A Danish astronomer that discovered a star's temperature and luminosity are linked.
Who is Ejnar Hertzsprung?
Clouds of dust and gas found in space.
What is a nebulae?