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Understanding > Fundamental concepts
FUNDAMENTAL CONCEPTS
The next pages will explain some fundamental concepts in the understanding of the solar system. We will learn more about some notions encountered during the previous pages describing simply the solar system. You will find the answers to the questions below by clicking on the links.
How to know where are the
solar system bodies ?
What is the celestial sphere ?
How to determinate the
distances in astronomy
How to measure the Earth
?
How is the rotation of the Earth ? around
its axis ? around the Sun ?
How are defined the time scales ?
How do the time is made ?
What is the definition of legal time ?
What is a calendar
? From where comes our calendar ? How is it made ?
How is determined the Easter date ?
How are defined the seasons
? the equinox ? the solstice ?
What is an astronomical phenomena such as an eclipse
? the phases of the Moon ? rise and set of the Sun ?
How to calculate it ?
What are the tides
? How they occur ? (in French)
What are the
Kepler's laws ?
What is the celestial mechanics ?
What are gravitation,
general relativity ?
How are the
ephemerides calculated ? (in French)
What is the
astronomical observation ?
What area telescope ? a refractor ? a reflector ?
What is the
adaptative optics ?
What is the spectroscopy
?
What is the polarimetry
?
What are the detectors
used in astronomy ?
What is the infrared observation ?
What are the fundamental constants
of astronomy ?
- Click here to know more
about the history of astronomers and
astronomy and also on the solar system bodies.
- Data relative to the astronomical calculations
such as ephemerides, astronomical phenomena
(seasons, eclipses, rises and sets ...) are provided in the pages
"Astronomical calculations".