This means Summer for the northern half of your little world, and Winter for the southern half. You must notice carefully how the north pole is towards the candle and the south pole is away from it. So, at the same time, we in the north have our Summer Solstice and people in the south have their Winter Solstice. Next, carry round your ball to the other side of the candle, just opposite to where you have been; but do not turn it in your hand as you go. The _slant_ or _lean_ of the pin must be the same; and the pin’s head must point still just where it pointed before. You will see now that the south pole is towards the candle, and the north pole is away from it. This means Summer for the southern half of your little world, and Winter for the northern half. So we in the north have our Winter Solstice while friends in the south have their Summer Solstice. Between Summer and Winter lie the Spring and the Autumn Equinoxes. For either of these you must carry your ball to one side of the candle, half-way between the summer place and the winter place. Your pin must still slant exactly as it did before, with no change in the direction of its head. You will then find neither north pole nor south pole towards the candle. The pin lies _sideways_ to it, and the candle-light falls on both poles alike. So here, as the Earth spins, days and nights are of just the same length; and this is one of the Equinoxes. Over the greater part of the Earth days and nights are always altering in length between the Spring Equinox and the Autumn Equinox. Days are getting longer and nights shorter; or nights are getting longer and days shorter. In the very far north, and in the very far south, near the poles, things are different. There, when the pole is turned towards the Sun, one full day lasts for months, with no sunset. And there, when the pole is turned away from the Sun, one full night lasts for months, with no sunrise. Some chapters back we were thinking about our Earth as she floats in the sky, with stars all around her everywhere. You heard how the stars seem to travel every night across the sky, and how this seeming journey of theirs is brought about by our own Earth’s daily spinning on her axis. The stars which we see in our sky are not exactly the same all the year round. Some are the same, but some are different. Fresh star-groups come into view in the evening at one time of the year, and vanish again at another time. This is because we can only see those stars which lie in a direction _away from the Sun_. It is impossible for us to see those which lie _beyond the Sun_; for they are above the horizon when he is above it, and their faint glimmers are quite hidden by his radiance. As we go round the Sun, we see him month by month in a fresh part of the sky, and behind him lie fresh star-groups. So our journey makes the Sun seem to move among the stars, and the Sun’s seeming pathway we call the Ecliptic.