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How did Ptolemy explain the change of constellations during the year?
Wiki User
∙ 8y ago
All the constellations were fixed to a crystal sphere that rotates at a slightly different rate from the Sun's rotation rate. So while the Sun goes round 365 times in a year, the sphere of the constellations go round 366 times.
Wiki User
∙ 8y ago
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Who wrote about geography and astronomy during the greco-roman age?
Copernicus and Ptolemy
How can you tell the time of year without looking at a calendar or clock (by looking at the sky)?
During the year, due to the earth's orbit, different constellations appear during different seasons. You can use the constellations to determine the time of year.
Who was the main source for geographical knowledge?
During the medieval period, one of the main sources for geographical knowledge was the work of the ancient Greek scholar Claudius Ptolemy. His book, "Geographia," compiled information from various sources and was widely used as a reference for mapmaking and navigation. Ptolemy's work was highly influential and considered authoritative for centuries.
Who discovered that planets have different speeds during their path around the sun?
It was known to the ancients, and Ptolemy's model allows for the variations in speed.
Which constellations can you see in the summer?
In the northern hemisphere the constellations on the meridian on June 21 have a right ascension of 18 hours, and constellations from 15 to 18 hours can be seen in summer evenings. They are not as bright as the winter constellations. The main ones are Boötes (main star Arcturus), Corona Borealis, Serpens Caput, Libra, Hercules and Ophiuchus. In the southern sky, Scorpio (main star Antares). In the summer the circumpolar constellations like Cassiopeia, Ursa Major, Perseus and Draco can be seen although not in their usual winter positions.
Who wrote about geography and astronomy during the greco-roman age?
Copernicus and Ptolemy
How were the constellations names?
The constellations were named to be easily identified for cultural and religious reasons. Most of the constellations were created and named during the bulk of the Mesopotamian era.
Where do the constellations rise in the nigth sky?
Constellations rise in the East and proceed westward during the night as the Earth rotates under them.
What are the names of the four constellations that can be seen during fall?
Leo.goegoe
Why are constellations not seen during the daytime?
The bright light from the Sun overpowers the faint light from the stars but during a solar eclipse when the light from the Sun is block the stars and constellations become visible.
What was ptolemy's country?
He Was Born In Egypt
Which motion causes some constellations to be visible in New York State only during winter nights and other constellations to be visible only during summer nights?
Earth rotates on its axis.
Who wrote the geography and the astronomy during the greco roman age?
ptolemy....
Who wrote the geography and astronomy during the greco roman age?
ptolemy....
Why you see different constellations of stars during a year?
the earth's rotation
Does food go thought a chemical physical or both change during digestion Explain?
Both
Why do you see different constellations in different areas of the sky during different seasons?
You see different constellation because the constellations stay in place, but Earth moves so every season you are able to see different constellations.
