Astronomy Terms

3. The fourth planet from the sun and known as the "Red Planet"
5. An astronomical event which occurs when an astronomical object or spacecraft is temporarily obscured, by passing into the shadow of another body or by having another body pass between it and the viewer
6. The idea that the Sun is the center of the solar system, introduced by Copernicus
10. The idea that the Earth is the center of the solar system
15. A group of stars that seem to create a pattern or picture, and is usually named after ancient myths

1. Type of telescope that uses primarily lenses and also mirrors
2. Type of telescope that uses primarily mirrors
4. The longest day of the year and the start of the astronomical summer
7. The movement of a planet around the Sun, for Earth it takes 365.25 days
8. Fifth planet from the sun and a gas giant
9. The type of wave on the EM with the longest wavelength
11. Two times in a year when the sun crosses the plane of the earth's equator, and day and night are of equal length
12. The light that the human eye can see
13. The type of wave on the EM that has the highest frequency and energy
14. The spinning movement of a planet around its own axis