By James Muirden

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But no comparison with the the scale of these forma- size of the impact craters, and more significance than the random alignments to be expected in any chaotic bombardment. In the southern hemisphere craters crowd the terminator and must be identified by means of the outline map. Of more interest the "chains," so called, seem to have no the group of three craters near the north pole: Atlas, Hercules and Endymion. In a large telescope both Atlas and Endymion are seen to have dark patches on their floors, and some observers consider them to vary in extent and tone during the lunar day.

The current and forthcoming seasons for the four brightest occultable stars in the sky are given below, to the nearest tenth (decimal point) of a year. 7 When a planet is occulted, binoculars will fading prior to complete immersion. This unlike a star, shows a perceptible disk, and time to cover it completely. it show is a few seconds' because a planet, takes the Moon some A ^ The it Planers Most astronomical books are written in the wrong order, and this is no exception. If there is any excuse for starting off with the solar system and working up to the infinitely vaster stellar universe, it is that our nearby surroundings are of much greater personal importance.

10. Note Evening elongations in spring that the planet's direction of setting and autumn parallel to the celestial equator, is not to the ecliptic. 21. In both cases the angular distance from the Sun but the spring sunset is in the is obviously far north-bound part of the more ecliptic, is the same, favorable; the planet while in autumn it is in the south-bound region. Evening elongations are therefore best seen in the spring, and a is little thought will show that the autumn the best time to observe a western, or morning, apparition.

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