11 Conjunction of Venus and Saturn at sunset (1.8°). 14 Geminids (meteor shower). 22 Winter Solstice 04:19 UT. 26 Annular solar eclipse (India, Indonesia).
11 Transit of Mercury ahead of the Sun (12:35 - 18:04 UT). 24 Conjunction of Venus and Jupiter at sunset (1.5°). 28 Maximum elongation west of Mercury (20°).
Light allows us to know our environment and also gives us information about regions that are out of our reach, as happens with most objects in the Universe...