Vocabulary
This is a tool that magnifies objects and makes them look closer and bigger
What is a Telescope?
This is the name of the star closest to Earth.
What is the Sun?
This is the time of day when are you able to see stars in the sky.
What is twilight, or when the sky is dark enough that starlight can be seen?
This is why scientists use telescopes to observe the stars.
What is, because they can see more stars when they look through a telescope; the stars appear bigger and closer; so it is easier to see details and observe properties such as color and brightness?
This is the name for the unit of distance used to measure how far stars are from Earth (the distance light travels in one year).
What are light years?
This is a characteristic about an object that you can observe
What is a property?
This is why we can't we see the other stars in the day sky.
What is because during the day, light from the sun washes out the light from the other stars?
This is the reason that some stars appear in the night sky before others.
What is, those stars are brighter, bigger, or closer to Earth?
This is one property about stars that may change over time (based on Stars 101 National Geographic video).
What are color, size, temperature, and/or brightness?
This is how long it takes light from a star to reach Earth that is 3 light years away.
What is 3 years?
This is what a glowing ball of hot gases is called.
This is why can't we see the sun in the night sky.
What is, because at night, the part of Earth we are on is turned away from the sun (in the Earth's shadow).
This is the primary reason why some stars appear brighter than others.
What is the star's distance from Earth?
This is the name for the building that houses large telescopes used to view distant objects in the sky?
What is an observatory?
These are the colors of stars in order from hottest to coolest.
What are blue, white, yellow, and red?
This is the term for the brightness of a star, as perceived by an observer on Earth.
What is apparent brightness?
This is why it used to be easier for people to see the stars at night.
What is, because there were fewer big cities with bright lights creating light pollution?
This is a property of stars that can be observed.
What are color and/or brightness?
This is the main difference between viewing stars through a telescope, and with just our eyes?
What is, we can see many more stars through a telescope, and see stars in more detail?
This is what astronomers study.
What are objects in space, such as stars and galaxies?
This is the term for when you use your senses to learn about an object or event.
What is observe, or observation?
This is the property of the other stars that makes them look like little points of light compared to the Sun?
What is, because they are farther away from Earth than the Sun?
This is a property of stars that can be measured.
What are either size (solar radius), distance from Earth, and/or surface temperature?
This is a reason why it is useful for scientists to talk to each other about their work.
What is, so they can share ideas, discuss their observations, discuss their new discoveries, compare notes, they can learn from each other?
This is what the term "light-minute" means.
What is the distance light travels in one minute?