Read the passage to answer questions 4-5.
The vast multitude of stars are wandering about in space. A few form groups which journey in company, but the majority are solitary travelers. And they travel through a universe so spacious that it is an event of almost unimaginable rarity for a star to come anywhere near to another star. For the most part each voyages in splendid isolation, like a ship on an empty ocean. In a scale model in which the stars are ships, the average ship will be well over a million miles from its nearest neighbor, whence it is easy to understand why a ship seldom finds another within hailing distance.
4. Which of the following is incorrect according to the passage?

1. Most of the stars travel in isolation 
2.  A star very frequently comes near to another one  
3. The universe is very large 

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