Did you know? Mass of a Block IIR GPS Satellite in orbit (1,080 kg) is 2.5 thousand x Mass of a typical (soccer) football (430 g)
Other land in Portugal (2018) (20,580 km^2)
/fact/other-land-in-portugal
"This is a fun and riveting book. Written in an accessible and engaging way, it is unputdownable." Frost Magazine
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