It takes the average reader and 26 minutes to read Great Astronomers by Robert Ball
Assuming a reading speed of 250 words per minute. Learn more
Edmond Halley, (1656-1742) was an English astronomer, geophysicist, mathematician, meteorologist, and physicist who is best known for computing the orbit of the eponymous Halley's Comet. He was the second Astronomer Royal in Britain, following in the footsteps of John Flamsteed. Halley became a close friend of Isaac Newton. He encouraged Newton to publish his discoveries, his "Principia," but when the Royal Society had no money to pay for the publication, Halley paid for and accomplished the publishing himself.
Great Astronomers by Robert Ball is 26 pages long, and a total of 6,656 words.
This makes it 9% the length of the average book. It also has 8% more words than the average book.
The average oral reading speed is 183 words per minute. This means it takes and 36 minutes to read Great Astronomers aloud.
Great Astronomers is suitable for students ages 8 and up.
Note that there may be other factors that effect this rating besides length that are not factored in on this page. This may include things like complex language or sensitive topics not suitable for students of certain ages.
When deciding what to show young students always use your best judgement and consult a professional.
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