(1) On this day the distance between the Sun and the Earth is the least.
(3) The Sun shines vertically on this during Equinox.
(2) A natural light display in the night sky in high latitudes.
(4) He proposed that the Sun was at the centre and the Earth moved around It.
(5) The movement of the Earth on its axis.
Across: (1) Perihelion (3) Equator
Down: (2) Aurora (4) Copernicus (5) Rotation