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 gives an indication of its "degree of difficulty": the scale runs from 1 (Easy) to 5 (Degree level!). The articles are "tap enabled", so should work just as well on a tablet as on a PC. Note, however, that some diagrams may not display correctly if you are not connected to the Internet when viewing the pages. I hope you enjoy reading the articles! | ||
| Why do eclipses occur? (1) How long can an eclipse last? (1) |
Ecliptic limits (4) Saros Series (5) | ||
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 (3) Do We Really Need The Moon? (1 to 5) Includes articles on the Tides (4), the recession of the Moon (3), and the stability of the Earth's obliquity (5) Why doesn't the crescent Moon point at the Sun? (3) The Orbit of the Moon (3) Supermoons (3) Lunar Occultations (3)  October 2024 | |||
GENERAL INTEREST |  | ||
| Orbital Dynamics (3) Blue Moons (2) |
Artificial Satellites (2) Revised Oct 2024 The magnitude scale of brightness (1) |
Meridian Flips (PDF) (2) |
|
