News tagged with outer shell

Image: Hubble's 'smoky' shells

(—Located in a relatively vacant region of space about 4,200 light-years away and difficult to see using an amateur telescope, the lonesome planetary nebula NGC 7354 is often overlooked. However, thanks to this ...

dateDec 17, 2012 in Astronomy
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National security vs. online privacy

One method for safeguarding online anonymity is Tor, "the onion router", whose name comes from its method of adding and stripping away encryption layer by layer as messages pass from one node to another in the network en ...

dateNov 07, 2014 in Security
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