What is the true diameter of Earth? “Both of these values are very close to the accepted modern values for the Earth’s circumference and radius, 40,070 km and 6378 km respectively, which have since been measured by orbiting spacecraft. The diameter...
What is the diameter of the Moon? “Size: With a diameter of 2,159 miles (3,475 kilometers), the Moon is just 1/4 the size of Earth. Distance from Earth: The Moon’s average distance from Earth is 238,000 miles (383,500 km).” Why is...
What is the Moons diameter in KM? “Size: With a diameter of 2,159 miles (3,475 kilometers), the Moon is just 1/4 the size of Earth.” What diameter is the Moon? ““ Is Australia bigger than the Moon? “It turns out the...
How do you solve a parallax? “ The parallax formula states that the distance to a star is equal to 1 divided by the parallax angle, p, where p is measured in arc-seconds, and d is parsecs. … This is enough...
How to measure the diameter of the Moon using parallax method? “The angle ∝ can be measured from the same location on the earth. When two diametrically opposite points of the moon are viewed through a telescope, the angle between the...
What is the parallax of the Moon? “The first parallax determination was for the Moon, by far the nearest celestial body. Hipparchus (150 bce) determined the Moon’s parallax to be 58′ for a distance of approximately 59 times Earth’s equatorial radius,...
How do you calculate parallax distance? “To calculate the distance of a star using the stellar parallax method, proceed as follows:” “ Find out the measured stellar parallax angle of the star. Determine the distance of the star using the stellar...
Where was Hipparchus born? “Hipparchus was born in Nicaea, Bithynia (now Iznik, Turkey), circa 190 B.C. He spent much of his time in Rhodes, Greece. Very little is known about his life, but he was one of the greatest astronomers and...
What happened to Hipparchus? “He is believed to have died on the island of Rhodes, where he seems to have spent most of his later life. In the second and third centuries, coins were made in his honour in Bithynia that...
What did Hipparchus do as a kid? “Born in Nicaea, Bithynia (now Iznik, Turkey), Hipparchus lived in the 2nd century bc. As a young man he compiled records of local weather patterns throughout the year.” Where did Hipparchus grow up? “Hipparchus...