Astronomical Theory Section

ECLIPSES

Click on the for more information about an article, and for a contents list, or click on the title to read an article immediately.

The number next to each article, in this index and in the contents lists, gives an indication of its "degree of difficulty": the scale runs from 1 (Easy) to 5 (Degree level!).

Why do eclipses occur? (1)
How long can an eclipse last? (1)
Ecliptic limits (4)

Saros Series (5)
Revised November 2011

PLANETARY PHENOMENA

The behaviour of the outer planets near opposition (2)
Periodicities in the observed position of the planets (1)
The orbit of dwarf planet Ceres Revised August 2011 (3)

GENERAL INTEREST

Orbital Dynamics (3)
Blue Moons (1)
The magnitude scale of brightness (1) Artificial Satellites (1)
Noctilucent Clouds (1)

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ECLIPSES			Click on the for more information about an article, and for a contents list, or click on the title to read an article immediately. The number next to each article, in this index and in the contents lists, gives an indication of its "degree of difficulty": the scale runs from 1 (Easy) to 5 (Degree level!).
	Why do eclipses occur? (1) How long can an eclipse last? (1) Ecliptic limits (4)	Saros Series (5) Revised November 2011
PLANETARY PHENOMENA
	The behaviour of the outer planets near opposition (2) Periodicities in the observed position of the planets (1) The orbit of dwarf planet Ceres Revised August 2011 (3)

GENERAL INTEREST
	Orbital Dynamics (3) Blue Moons (1) The magnitude scale of brightness (1)	Artificial Satellites (1) Noctilucent Clouds (1)