1. We can see five _______ from earth without a telescope: Mercuru, Venus, Mars, Jupiter and Saturn.
2. Every __________ develops a tail when it passes near the sun, and we can often see these tails from earth.
3. When people see a _________, they often make a wish on it.
4. We cannot see __________, but we can see the circling movement of gas and dust around them just before it gets sucked into them.
5. The earth's __________ is the closest space object to our planet. Other planets also have them but we cannot see most of them.
6. Scientists believe there are about 1.500 pieces of __________ weighting over 100kg floating around in space, but they are still too small for us to see from earth.
7. If you have ever looked into the night sky to see a band of white light we call the "Milky Way". you have seen a __________!
8. We can see the __________ from earth without a telescope, but you need to check the NASA website to find out when it is passing over your city.
9. Although an __________can be up to 933km in diameter, we can only see these pieces of rock or metal through a telescope, because they are too far away.
(you can fill in the blanks mostly with these words: asteroid, Black hole, comet, galaxy, meteor, moon, planet, space debris, space station, star, sun)