WORD BANK probe Yuri Gagarin space station satellite

Galileo lunar lander

Four of Jupiter’s moons are named (as a group) after , who discovered them using a telescope.

The is a place where scientists can live in space for long periods of time to do research.

The Apollo 11 spacecraft also carried a which delivered the astronauts to the Moon.

was the first human to journey into space.

Before they can be published, scientific papers must be peer-reviewed. this means that: a) some other scientific experts read the papers and guarantee that they are true. b) some other scientific experts read the papers and provide quality control by eliminating many mistakes. c) an editor reads the papers, to make sure that all the semicolons are in the correct places. d) everyone in the world is given the opportunity to comment on the papers through a specially maintainedblog. e) government bureaucrats read the papers, to be sure that the papers do not insult the political positions ofthe current officeholders.