* Astronomy

Athens' latest archaeological attraction opened on Monday several metres underground, as visitors and commuters passing through the Greek capital's Monastiraki metro station will be able to peer into excavations revealing the Eridanos River bed -- one of ancient Athens' oft-cited streams.
The Monastiraki station archaeological site spans an expanse of 300 square metres, with a 24-metre glass pedestrian way stretching across a dome-shaped opening where the now subterranean stream can still be heard, according to metro engineers and archaeologists.

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