Hubble rules out one alternative to dark energy

(PhysOrg.com) -- Astronomers using NASA's Hubble Space Telescope have ruled out an alternate theory on the nature of dark energy after recalculating the expansion rate of the universe to unprecedented accuracy.

White flight may still enforce segregation

As the population of people of color grows across the United States, white Americans are still prone to move when neighborhoods diversify, and their fears and stereotypical beliefs about other racial and ethnic groups may ...

Hubble finds birth certificate of oldest known star

(Phys.org) —A team of astronomers using NASA's Hubble Space Telescope has taken an important step closer to finding the birth certificate of a star that's been around for a very long time.

Rogue Black Holes May Roam the Milky Way

(PhysOrg.com) -- It sounds like the plot of a sci-fi movie: rogue black holes roaming our galaxy, threatening to swallow anything that gets too close. In fact, new calculations by Ryan O'Leary and Avi Loeb (Harvard-Smithsonian ...

Solar tech could enable world's first underground park

Visitors from around the world are drawn to New York City's High Line, an elevated park built on defunct railroad tracks transformed into an urban sanctuary of flowers, grasses and trees.

How has American identity changed?

First-generation West African immigrants from Nigeria and Ghana transition smoothly into major societal institutions, such as the workplace and the neighborhood, but have not built stable, mutually beneficial friendships ...

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Neighbourhood

A neighbourhood or neighborhood (see spelling differences) is a geographically localised community within a larger city, town or suburb. Neighbourhoods are often social communities with considerable face-to-face interaction among members. "Researchers have not agreed on an exact definition. Neighbourhood is generally defined spatially as a specific geographic area and functionally as a set of social networks. Neighbourhoods, then, are the spatial units in which face-to-face social interactions occur – the personal settings and situations where residents seek to realise common values, socialise youth, and maintain effective social control."

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