Your ultimate guide to grad school success.
Your ultimate guide to grad school success.
A constellation is a group of stars that form a recognizable pattern when viewed from Earth. Some constellations have been known since ancient times, while others were only discovered recently.
In astrophysics, constellations are used to understand and chart the night sky. They are important for navigation and locating celestial objects such as planets, stars, and galaxies.
Image Source: https://www.nasa.gov/audience/forstudents/k-4/dictionary/Constellation.html
An epicycle is a geometric concept used in ancient and medieval astronomy to explain the retrograde motion of celestial objects, such as planets. It is a small circle that moves on the circumference of a larger circle, called a deferent, with its own center. The planet is placed at the center of the epicycle and … What is an Epicycle…
An equant is a geometric concept used in ancient and medieval astronomy to improve the accuracy of the epicycle and deferent system, which was used to explain the retrograde motion of celestial objects, such as planets. An equant is a point located at a fixed distance from the center of the deferent circle and is … What is Equants? Read…
Great Circle / Geodesic: Any circle that passes through the center of a sphere is called a Great Circle or Geodesic. Small Circle: Any plane intersecting the sphere but not passing through the sphere is called Small Circle.
The equator is an imaginary line drawn around the middle of the Earth, halfway between the North and South Poles. It is the reference line from which the Earth’s latitude and longitude are measured and divides the planet into two hemispheres. Facts about the Equator: The equator is an arbitrary line that divides the earth … What is Equator? Read…
Latitude: Latitude is the horizontal lines through the earth. We get the equator with the concept of Latitude. Longitude: Longitude is the verticle lines through the earth. For more explanation: Imagine our world as a three-dimensional ball. Latitudes are imaginary lines that run from west to east, parallel to the equator. The equator is … What Are Latitude &…
Deferent vs. Epicycle Deferent: A deferent is a large circle that was used by ancient astronomers to explain the motion of planets across the sky. It assumed that all celestial bodies moved around Earth in perfectly circular orbits and so had to account for any irregularities observed from this model. Epicycle: An epicycle is a … What is the difference…