Silence of the Galaxy

After 50 years of searching for intelligent life in outer space, astronomers still haven't made contact with extraterrestrials. "Does that mean we are alone in the universe after all?"

After 50 years of searching for intelligent life in outer space, astronomers still haven't made contact with extraterrestrials. "Does that mean we are alone in the universe after all? Or might we be looking for the wrong thing in the wrong place at the wrong time?" asks Paul Davies. He notes that many scientists now believe that the universe is "teeming with life, and that some planets could harbor intelligent organisms."

Water may be an inevitable result of the process that forms rocky planets

New research identifies an unexpected source for some of earth's water.

Surprising Science
  • A lot of Earth's water is asteroidal in origin, but some of it may come from dissolved solar nebula gas.
  • Our planet hides majority of its water inside: two oceans in the mantle and 4–5 in the core.
  • New reason to suspect that water is abundant throughout the universe.
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How to split the USA into two countries: Red and Blue

Progressive America would be half as big, but twice as populated as its conservative twin.

Image: Dicken Schrader
Strange Maps
  • America's two political tribes have consolidated into 'red' and 'blue' nations, with seemingly irreconcilable differences.
  • Perhaps the best way to stop the infighting is to go for a divorce and give the two nations a country each
  • Based on the UN's partition plan for Israel/Palestine, this proposal provides territorial contiguity and sea access to both 'red' and 'blue' America
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Elon Musk's SpaceX approved to launch 7,518 Starlink satellites into orbit

SpaceX plans to launch about 12,000 internet-providing satellites into orbit over the next six years.

Technology & Innovation
  • SpaceX plans to launch 1,600 satellites over the next few years, and to complete its full network over the next six.
  • Blanketing the globe with wireless internet-providing satellites could have big implications for financial institutions and people in rural areas.
  • Some are concerned about the proliferation of space debris in Earth's orbit.
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