B) Continue to list advantages (good things) about manned space exploration and possible disadvantages in the table given after the text p.11

English Vocabulary:

· An orbit - the path an object in space takes while it moves. Generally, objects in space such as planets and comets take elliptical orbits around larger objects, such as a star.

· An asteroid - a combination of rocks and iron that is too small to form a planet. There are many asteroidsthat orbit the sun between the orbits of Jupiter and Mars.

· A comet- a small body of gas and ice orbiting around the solar system. We can see the tail of the cometbecause it is the sun heating and melting the ice. The most famous comet is Halley's Comet which is visible from Earth every 75-76 years.

· A star - made up of clouds of gas and dust. Many people love to go outside at night and count the stars, but there are so many that it is impossible for one person to count them all.

· A constellation- a group of bright stars that form shapes or 'pictures' in the sky. The Southern Crossis a constellation in the Southern hemisphere that points towards the South Pole.The Big Dipperis a constellation in the Northern hemisphere that is in the shape of a ladle or a large spoon.

· The sun- the star in the middle of our solar system. The eight planetsin our solar system all orbit around the sun. The closest planet to the sun is Mercuryand then comesVenus. The planet that we live on is called Earth. It is the third closest planet to the sun in our solar system.Mars is the fourth planet from the sun. It is a small red planet, named after the roman god of war. Jupiter is the largest of all the planets in the solar system. The next planet is Saturn which has thin rings around it. Uranusand Neptune are the next two planets after Saturn. Pluto used to be considered a planet, but now is called a dwarf planet because it is so small. Its orbit is further away from the sun than any of the other planets.

· A solar eclipse- moment when the moon's orbit comes between the earth and the sun and it looks like the sun is blacked out. We can only see the edge of the sun around the moon. A lunar eclipseis when the earth prevents sunlight from reaching the moon. Because the moon orbits the Earth and the Earth orbits the sun we can only see parts of the moon at a time. This cycle happens every month. A new moonis when we can not see any of it. This shows the beginning of the cycle. Half way through the month we can see the full moon. A full moon makes the sky bright at night because it reflects the light of the sun.

· The galaxywe live in is called the Milky Way. It is made up of billions of stars.

· A telescope- an instrument which has reflective lenses that allows us to see the objects in the sky closer and clearer. It magnifies objects that normally cannot be seen unaided. Some telescopesare very powerful and can be used to see thousands of light years away. There are many large powerful telescopes in the north of Chile.

· An astronaut- a person who leaves Earth and goes into space. Many of them work in the international space station and do scientific experiments. Astronauts need to wear space suitsbecause it is very cold in space and they do not have oxygen to breath.

· A spacecraft (plural – spacecraft)- any type of vehicle used for travelling in space. There are many different types of spacecraft. A space shuttle is a spacecraft used for repeated use in between earth and a space station and contains astronauts.

· A rocket- the type of plane that astronauts used to use to fly into space. Now they are used to leave satellites in orbit around the Earth. It has a special cylindrical shape so that it can go very fast for a long distance.

· A space probe- a type of space craft that does not have a person inside. Space probes can be sent to far away distances for long periods of time to gather information about different areas in space.

· A lunar module- a small craft used for travelling between the moon and the larger space craft orbiting the moon. When the first men walked on the moon they came out of the lunar module. The first man to walk on the moon said "One small step for man, one giant leap for mankind."

· UFOs - unidentified flying objects