Busy. Please wait.
Log in with Clever

show password
Forgot Password?

Don't have an account?  Sign up 
Sign up using Clever

Username is available taken
show password

Make sure to remember your password. If you forget it there is no way for StudyStack to send you a reset link. You would need to create a new account.
Your email address is only used to allow you to reset your password. See our Privacy Policy and Terms of Service.

Already a StudyStack user? Log In

Reset Password
Enter the associated with your account, and we'll email you a link to reset your password.
Didn't know it?
click below
Knew it?
click below
Don't Know
Remaining cards (0)
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.

  Normal Size     Small Size show me how


Important Astronomers and related astronomy terms

Copernicus formulated a model of the solar system that placed the sun at the center of the solar system.
Foucault Using a pendulum device he was able to help establish that the Earth rotated on its axis.
Edmund Halley Was able to locate and determine the period (time it takes ) for a comet eventually named for him.
Johannes Kepler Developed the Laws of Planetary Motion that explain the movement of our planets around the sun.
Isaac Newton Laws of gravity and motion
Galileo Galilei Italian scientist who viewed the eclipse of Venus, the 4 large moons of Jupiter and helped establish that the planets move around the sun.
Stephen Hawking Currently living. Astronomer who developed many ideas about black holes and quantum gravity.
Tycho Brahe Danish astronomer (who had a fake nose) who was known for his accurate observations of the stars.
Astronomer Someone who studies objects found in space.
Electromagnetic Spectrum All possible frequencies of electromagnetic energy, ranging from radio waves to Gamma rays.
Focal Point the point beyond a lens where the light is focused to a point allowing us to get a clear image of an object.
Visible Light Found in the center of the electromagnetic spectrum, it is light that allows us to see. Visible light is made of wavelengths of energy that make up the color spectrum: ROY G. BIV
Optical Telescope A telescope using visible light
Reflecting Telescope A telescope that uses mirrors to direct the light received from distant objects
Refracting Telescope A telescope that uses lenses to view distant objects.
Radio Telescope A telescope designed to gather radio waves that can be interpreted to view distant objects.
Concave Lens This lens type "caves" in, spreading light rays apart and separating them. This is the type of lens that might be used on a TV
Convex Lens This is a lens that bulges outward on either side. This type of lens might be used to magnify on object.
Objective Lens Lens on a telescope that is farthest from the eye. This is the lens closest to the object.
Eyepiece Part of the telescope we look through.
Spinoff a product using technology developed by NASA and applied to make a product we can use in our daily lives.
Created by: jljohnson404
Popular Earth Science sets




Use these flashcards to help memorize information. Look at the large card and try to recall what is on the other side. Then click the card to flip it. If you knew the answer, click the green Know box. Otherwise, click the red Don't know box.

When you've placed seven or more cards in the Don't know box, click "retry" to try those cards again.

If you've accidentally put the card in the wrong box, just click on the card to take it out of the box.

You can also use your keyboard to move the cards as follows:

If you are logged in to your account, this website will remember which cards you know and don't know so that they are in the same box the next time you log in.

When you need a break, try one of the other activities listed below the flashcards like Matching, Snowman, or Hungry Bug. Although it may feel like you're playing a game, your brain is still making more connections with the information to help you out.

To see how well you know the information, try the Quiz or Test activity.

Pass complete!
"Know" box contains:
Time elapsed:
restart all cards