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1 day ago · Lowell ( / ˈloʊəl /) is a city in Massachusetts, United States. Alongside Cambridge, it is one of two traditional seats of Middlesex County. With an estimated population of 115,554 in 2020, [3] it was the fifth most populous city in Massachusetts as of the last census, and the third most populous in the Boston metropolitan statistical area. [4]
5 hours ago · History Early history. The hypothesis of dark matter has an elaborate history. In the appendices of the book Baltimore lectures on molecular dynamics and the wave theory of light where the main text was based on a series of lectures given in 1884, Lord Kelvin discussed the potential number of stars around the Sun from the observed velocity dispersion of the stars near the Sun, assuming that ...
5 hours ago · Africa. Africa is the world's second largest and second-most populous continent after Asia. At about 30.3 million km 2 (11.7 million square miles) including adjacent islands, it covers 20% of Earth 's land area and 6% of its total surface area. [7] With 1.4 billion people [1] [2] as of 2021, it accounts for about 18% of the world's human ...
5 hours ago · Copenhagen [9] ( Danish: København [kʰøpm̩ˈhɑwˀn] ⓘ) is the capital and most populous city of Denmark, with a population of approximately 660,000 in the municipality and 1.4 million in the urban area. [10] [11] The city is situated on the islands of Zealand and Amager, separated from Malmö, Sweden, by the Øresund strait.
