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How did astronomers determine the scale of the solar system prior to the invention of radar?
Wiki User
∙ 13y ago
they used bubble gum and stretched it out on scale modles
Wiki User
∙ 13y ago
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Why is the heliocentric picture of the solar system called a model of the solar system?
The Heliocentric picture of the solar system is a model because it was given as a theory by Copernicus to describe the solar system. In prior centuries people believed that the earth was the center of the solar system.
How did Edwin Hubble's discovery that the Andromeda galaxy was far away of our own galaxy contribute to astronomers' knowledge about the size of the universe?
Prior to Hubble's discovery scientists generally believed that our galaxy was the entire universe. Hubble found that the Andromeda galaxy was, then called the Andromeda Nebula, was not a part of our galaxy but a galaxy unto itself far beyond the edge of the Milky Way. This discovered demonstrated that the universe is much larger than scientists have believed.
What characteristics do Andromeda galaxy stars have?
Basically, the same characteristics that the stars in the Milky Way - our own galaxy - have. Aside from the fact that Andromeda is somewhat bigger, the two galaxies are thought by astronomers to be very much alike. When Edwin Hubble studied the Andromeda Galaxy in the early 20th century, he was able to discern within it several "Cephid variable" stars, which proved, among other things, that Andreomeda was a galaxy, like ours. Prior to that time, it was believed that the Milky Way was the only galaxy - the others were "clouds".
How did Yuri Gagarin prepare for his journey?
He ate nothing but borscht for the week prior to his flight, in order for his urine to turn a reddish-orange colour. He also avoided drinking vodka for five minutes prior to his flight.
What calendar year is the same as 1981?
Prior to 1981, the most recent had been 1970. Since 1981 the following years have had the same calendar:198719982009The next will be 2015 and then 2026.Prior to 1981, the most recent had been 1970. Since 1981 the following years have had the same calendar:198719982009The next will be 2015 and then 2026.Prior to 1981, the most recent had been 1970. Since 1981 the following years have had the same calendar:198719982009The next will be 2015 and then 2026.Prior to 1981, the most recent had been 1970. Since 1981 the following years have had the same calendar:198719982009The next will be 2015 and then 2026.Prior to 1981, the most recent had been 1970. Since 1981 the following years have had the same calendar:198719982009The next will be 2015 and then 2026.Prior to 1981, the most recent had been 1970. Since 1981 the following years have had the same calendar:198719982009The next will be 2015 and then 2026.Prior to 1981, the most recent had been 1970. Since 1981 the following years have had the same calendar:198719982009The next will be 2015 and then 2026.Prior to 1981, the most recent had been 1970. Since 1981 the following years have had the same calendar:198719982009The next will be 2015 and then 2026.Prior to 1981, the most recent had been 1970. Since 1981 the following years have had the same calendar:198719982009The next will be 2015 and then 2026.Prior to 1981, the most recent had been 1970. Since 1981 the following years have had the same calendar:198719982009The next will be 2015 and then 2026.Prior to 1981, the most recent had been 1970. Since 1981 the following years have had the same calendar:198719982009The next will be 2015 and then 2026.
Prior to invention of railroad where did most city people live?
Prior to the invention of railroads, most city people lived near where they worked.
Prior the invention of railroads where did most city people live?
Prior to the invention of railroads, most city people lived near where they worked.
Where did most city people live prior to the invention of railroads?
Prior to the invention of railroads, most city people lived near where they worked.
What did many astronomers about galaxies prior to the 1920's?
The Milky Way, included every object in space
Why was the invention of ether so important?
Prior to the development of ether the was no anesthetic for surgery
What was the Agricultural Technology of ancient rome?
Like all societies prior to the invention of the combustion engine, the Romans used the plug and hand tools. They also had good irrigation and drainage system.
What year was the all time low for motorcycle victims?
The Year Prior to the Invention of the MotorCycle
Which ancient astonomer was the first to use a telescope?
There were no telescopes prior to 1608, so no "ancient" astronomers ever used one.
What was Egypt's bartering system?
Bartering is the exchange of goods or services for other goods or services, without money. E.g. I will cut your hair if you give me two books.It was no different in Ancient Egypt prior to the invention of currency.
Oceanic system of trade prior to 1500?
A network of exchange and communication characterized the oceanic system of trade prior to 1500
What must the commander determine prior to granting access?
Reliability, Trustworthiness, Loyalty
In ptolemy's theory did Saturn have rings?
No. Ptolemy had no knowledge of Saturn's rings; prior to the invention of the telescope, the rings of Saturn were unknown.
