Isaac Newton built the first reflecting telescope.
100
What color do hotter stars and cooler stars appear?
Hotter stars appear bluish in the sky. Cooler stars appear reddish in the sky.
100
What is a nebula?
A nebula is a large cloud of gas and dust spread out in immense volume.
100
What is a globular cluster?
A globular cluster is a large group of older stars. They are round and densly packed with stars.
100
What is a telescope?
A telescope is a device that makes distant objects appear to be closer.
200
What are three types of telescopes?
Reflecting telescopes, radio telescopes, and refracting telescopes
200
What is the H-R diagram?
The H-R diagram is a diagram that shows surface temperatures of stars on the x-axis and their absolute brightness on the y-axis. These points formed a pattern
200
What depends on how long a star lives?
How long a star lives depends on its mass.
200
What is a quasar?
A quasar is an active young galaxy with a giant black hole at their center.
200
What is the definition of a constellation?
A constellation is a group of stars formed into pictures of people or animals.
300
What is an observatory and where are they located?
An observatory is a building that contains one or more telescopes. Many observatories are located on mountaintops or in space.
300
How is parallax useful in astronomy?
Parallax is useful in astronomy because astronomers use it to measure distances to nearby stars.
300
What happens after a star runs out of fuel?
After it runs out of fuel, it becomes a white dwarf, a neutron star, or black hole.
300
What is an eclipsing binary?
An eclipsing Galaxy is a system where one star periodically blocks the light from another.
300
What is a pulsar?
A pulsar is a spinning neutron star. Some pulsars spin hundreds of times per second!
400
What does the electromagnetic spectrum include?
It includes the entire range of radio waves, infrared radiation, visible light, ultraviolet radiation, X-Rays, and gamma rays.
400
What is a spectrograph?
A spectrograph is a device that breaks light into colors and produces an image. Astronomers used spectrographs to determine the elements found in stars.
400
What is a white dwarf?
A white dwarf is the blue- white core of the star that is left behind and cools
400
How is scientific notation useful to astronomers?
Scientific notation is useful to astronomers because since the numbers astronomers use are often very large or very small, they use scientific notation to describe sizes and distances in the universe.
400
What is a Galaxy?
A Galaxy is a huge group of single stars, star systems, star clusters, dust, and gas bound together by gravity.
500
What are two kinds of electromagnetic waves that you might experience every day?
Two types of electromagnetic waves we experience each day are radio waves (when we play the radio) and ultraviolet waves (through the sun)
500
What is a star's absolute brightness and how is it calculated?
A star's absolute brightness is the brightness a star would have if it were at a standard distance from Earth. It is calculated through finding out the star's apparent brightness and distance from Earth.
500
What is a black hole?
A black hole is an object with gravity so strong that nothing, not even light, can escape. It is also one of the last phases of a high mass protostar.
500
What type of Galaxy is the Milky Way?
The Milky Way is thought of as a standard spiral galaxy, but there is some evidence that suggests that the Milky Way may be a barred-spiral Galaxy instead
500
What is a open cluster?
An open cluster is a cluster of stars that have disorganized appearance and contain no more than a few thousand stars.