العربية বাংলা Bosanski Български 中文 دری English Pilipino Français ગુજરાતી हिंदी नेपाली پښتو Español தமிழ் ቲግሪንያ اردو Việt
Basic Astronomy Terms
Enter the number from the column to the left into the text box next to the appropriate word in the right-hand column.
1. unit of distance equal to 3.26 light years parsec
2. the path a satellite travels around a larger object celestial body
3. an object (natural or manmade) that is held by gravity and inertia in a circular or elliptical path around a larger object space
4. the force of attraction between all objects light year
5. the distance light travels in one year (about 5.88 trillion miles; or 9.45 trillion kilometers) The Big Bang
6. the relatively empty area between and around stars, planets, and other celestial bodies inertia
7. the average distance from the earth to the sun (about 93 million miles; or 149.6 million kilometers) satellite
8. a star and all of its satellites universe
9. the area containing all matter, energy, and space orbit
10. an explosion that scientists believe occurred at the beginning of our universe; it is thought that after this explosion the first celestial bodies formed solar system
11. a natural object surrounded by the vacuum of space astronomical unit
12. the tendency of a body at rest to stay at rest, and of a body in motion to stay in motion, unless acted upon by another force gravity



Note: this website only uses cookies for session identification. However, we do not use crackers on this website. Not that there's anything wrong with crackers, but after one or two session cookies, we really don't need the extra calories.