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He reasoned that it was a giant flaming ball of metal even larger than the land of the Peloponnesus and that the Moon reflected the light of the Sun. [176] Eratosthenes estimated the distance between Earth and the Sun in the third century BC as "of stadia myriads 400 and 80000", the translation of which is ambiguous, implying either 4,080,000 ...
In addition to the 180 km (110 mi) Chicxulub crater, there is the 24 km (15 mi) Boltysh crater in Ukraine (65.17 ± 0.64 Ma), the 20 km (12 mi) Silverpit crater in the North Sea (59.5 ± 14.5 Ma) possibly formed by bolide impact, and the controversial and much larger 600 km (370 mi) Shiva crater.
Mathematics is a field of study that discovers and organizes methods, theories and theorems that are developed and proved for the needs of empirical sciences and mathematics itself.
Rotational velocity (v sin ... [11] This is a significant fraction of the star's estimated breakup speed of 400 km/s. [20]
With respect to pollution in the United States, a study done in 1992 showed that batteries "accounted for 86 percent of discarded mercury and dental amalgam a mere 0.56 percent". [101] Mercury is an environmental contaminant and the WHO, OSHA , and NIOSH have established specific occupational exposure limits.
Nødvarsel: Norway launched its system in 2023 [20] RO-Alert: [21] the national variant of EU-Alert for Romania. S!RENEN: the national variant of EU-Alert for Denmark. [22] Launched in April 2023, [23] first activated during Denmark's annual national test of the civil defense siren system in May 2023. UK Emergency Alert System: Launched in 2023.
Percentage 44.5% 19.1% 16.8% Swing 20.2 pp: 11. 9 pp: 3.1 ... +1 per each 100,000 inhabitants or fraction ... The highest percentage figure in each polling survey is ...