Right ascension and declination in the celestial sphere correspond to

Question

BlackTom AI · Accepted Answer

In astronomy, right ascension and declination form a coordinate system for the celestial sphere that mirrors geographic coordinates on Earth, with RA analogous to longitude measured in hours along the celestial equator and Dec analogous to latitude measured north or south of the celestial equator.
Option 1: 'longitude and latitude on the Earth' correctly parallels the celestial pair, since celestial coordinates map directions on the sky in a way that corresponds to how longitude and latitude locate positions on Earth.
Option 2: 'latitude and time on the Earth' mixes a positional measure (latitude) with a temporal quantity (time); time is not a spatial coordinate and does not align with how RA is used to locate objects along the sky.
Option 3: 'longitude and azimuth on the Earth' combines a geographic longitude with azimuth, which is a local compass direction; azimuth depends on the observer’s location and orientation, not a fixed celestial coordinate pair like RA.
Option 4: 'altitude and latitude on the Earth' pairs latitude with altitude, but altitude (or altitude angle) is a local vertical angle, not a fixed celestial coordinate system comparable to RA.
Option 5: 'longitude and hour angle on the Earth' uses hour angle, which is related to local sky position but is not the standard two-coordinate description of the celestial sphere; hour angle depends on time and the observer’s meridian, whereas declination is fixed relative to the celestial equator.

Right ascension and declination in the celestial sphere correspond toSingle choice

Similar Questions

If you're standing on the North Pole of the Earth, where in the sky would the celestial equator be?

Which of the angles in the previous question would be different when viewed from the North Pole?

Which of the following describes the position of Polaris in our local sky here in the bay area?

The equinoxes are located at the intersections of the

Which ONE of the following thalamic nuclei is targeted by the trigeminothalamic tract?

Which ONE of the following is disinhibited in the direct pathway of the basal ganglia motor loop

30. What is the main purpose of the lecture?

Section FChoose a, b or c as the best answer.29. Which statement is the speaker most likely to agree with?

More Practical Tools for Students Powered by AI Study Helper

Homework AI Solver

Stylized AI Paper Writer

Plagiarism Checker Assistant

Citation AI Academic Writing Tool

In-Class Translation Assistant

AI Note Generator

AI Quiz Answers

Past Exam Questions from University Test Bank

Smart Practice Assistant

Adaptive Practice

Making Your Study Simpler