- High in the northern sky stands a forlorn-looking charioteer. With his right hand he grasps the reins of a chariot, while on his left arm he carries a goat and its two kids. Of his chariot itself there is no sign. What’s the story here? Mythology offers several identifications for this prominent constellation, although the presence of the goat is not accounted for by any of them.
- Silurian (Wikipedia)
The Silurian (/sɪˈljʊəriːən, saɪ-/ sih-LURE-ee-ən, sy-) is a geologic period and system spanning 24.6 million years from the end of the Ordovician Period, at 443.8 million years ago (Mya), to the beginning of the Devonian Period, 419.2 Mya. The Silurian is the shortest period of the Paleozoic Era. As with other geologic periods, the rock beds that define the period’s start and end are well identified, but the exact dates are uncertain by a few million years. The base of the Silurian is set at a series of major Ordovician–Silurian extinction events when up to 60% of marine genera were wiped out.