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1970

Helen Hogg on TVO

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Audio recordings of Helen Hogg's appearances on TV Ontario, circa 1970.  Courtesy Randy Attwood.

Year: 
1970
Pages: 
0

Types of Variable Stars

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by K.E.
Year: 
1970
Pages: 
8

Saturn's Satellites

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POSSIBLE MAGNITUDE VARIATIONS OF SATURN'S SATELLITES

by K.E. Chilton, Planetary Coordinator

For many years it has been known that he magnitude of Iapetus, Saturn's outermost moon, is variable. Recent observations have indicated that some of the other moons may vary in brightness, too. (Refs. 1,2) This was pointed out in Planetary Bulletin No.9. However, observers were left ot their own devices to work out the positions of the satellites.

Year: 
1970
Pages: 
6

Motions of the Moon

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by K.E. Chilton, F.R.A.S.

1. Daily apparent revolution:

Like all celestial bodies, the moon appears to revolve around the Earth, once every 24 hours. This is caused by the rotation of the Earth. However, the moon revolves eastward in its orbit, ie: in the same direction as the Earth. Therefore, it takes a little longer for the earth to catch up, lengthening the apparent revolution to 24h 50m.

Year: 
1970
Pages: 
3

The Moon That Never Was (Maybe?)

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Published in the October 1970 National Newsletter. [PDF]

The Moon that Never Was (Maybe?)

After reading about the “Planet That Never Was” in the last issue of the NEWSLETTER, I thought that our readers might be interested in a satellite which was photographed 13 times near the turn of the century but has never been seen since. This was Themis, a supposed tenth moon of Saturn.

Year: 
1970
Pages: 
2

RASC Library Catalogue

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The text below is from pages 38-39 of the catalogue. Downloadable versions may be found at the bottom of this page.

The National Library of the R.A.S.C. is maintained for the use of members of the Society although anyone is welcome to examine the books in the Library. Traditionally, the Library has operated on a very small budget and has relied heavily on the generosity of members' donations to enhance the collection. In addition to the books listed here, there are periodicals, films, and a large collection of 35mm slides.

Year: 
1970
Pages: 
37

GA Guide 1970

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Year: 
1970
Pages: 
3
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