There are about 200 billion stars in our galaxy, with 40 billion of them like our sun, Marcy said. One of his co-authors put the number of sun-like stars closer to 50 billion, meaning there would be at least 11 billion planets like ours
Answer: 
Explanation:
The Tropic of Cancer is one of the parallels (imaginary line around the Earth parallel to the equator) located in the northern hemisphere (currently its latitude is 
).
It is called "Cancer" because a long time ago, when the summer solstice occurred in the northern hemisphere (on June 20th or 21st), the Sun was in the constellation Cancer (the crab).
Now, if we were just in the North Pole, Polaris would by exactly over our heads (
over the horizon), but as we go south and find the Tropic of Cancer parallel, Polaris altitude will be approximately at an angle of over the horizon.
Hence, the altitude of Polaris measured by an observer at the Tropic of Cancer is .
Answer:
B.
Incomes in Wyoming and Arizona are relatively the same in comparison to the national average.
Explanation:
They differ in some social and ritual customs, and in some aspects of their cuisine.
These 'surface' differences stem from their respective historical geographic origins. The history of the 'Sephardim' springs from western Europe and North Africa, including Spain, Portugal, Turkey, Morocco, Egypt, and Arabia. The history of the 'Ashkenazim' is rooted in Eastern Europe, including Germany, Poland, the Baltics, Russia, and the 'Stans' ... Tajik, Kazakh, Uzbek, etc.
One fascinating feature of this split, isolated evolution of Judaism ... and there are many ... is the fact that even though the two streams evolved, with almost zero contact, for as much as 1,000 years, a Sephardic Torah scroll and an Ashkenazic Torah scroll are totally identical, down to the last character in every one of their 10,290 lines of text written in 245 columns.
