Seeing an X-Plane’s Sonic Boom


This schlieren image shows an Air Force Test Pilot School T-38 in a transonic state, meaning the aircraft is transitioning from a subsonic speed to supersonic.

from NASA http://ift.tt/2kHqUNB

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TIL Hong Kong’s independence has an expiration date. China can, based on the deals signed in 1997, reunite Hong Kong in 2047. via /r/todayilearned


TIL Hong Kong’s independence has an expiration date. China can, based on the deals signed in 1997, reunite Hong Kong in 2047.
http://ift.tt/1sQfVCn

Submitted December 18, 2017 at 11:45AM by FatBearCat
via reddit http://ift.tt/2kcItFV

Nominations Process Opens for National Space Council Users’ Advisory Group

Public nominations now are being accepted from U.S. citizens and organizations for potential membership on an advisory group that will represent the perspectives, interests and expertise of industry and other non-federal entities to the National Space Council.

from NASA http://ift.tt/2kIBTGx

TIL that, after she wanted to marry a lawyer whom her mother disapproved of, Blanche Monnier was locked by her mother in her room for 25 years–being discovered and rescued by the police in 1901. via /r/todayilearned


TIL that, after she wanted to marry a lawyer whom her mother disapproved of, Blanche Monnier was locked by her mother in her room for 25 years–being discovered and rescued by the police in 1901.
http://ift.tt/2qmXJ4e

Submitted December 18, 2017 at 01:52AM by Souhondron
via reddit http://ift.tt/2AMek6k

TIL about James Fallon, a neuroscientist who studied the brain scans of psychopaths, only to discover that he was one himself via /r/todayilearned


TIL about James Fallon, a neuroscientist who studied the brain scans of psychopaths, only to discover that he was one himself
http://ift.tt/2xOX2aN

Submitted December 18, 2017 at 12:55PM by fooduvluv
via reddit http://ift.tt/2BD4Y0n

A Tillerson Slip Offers a Peek Into Secret Planning on North Korea by DAVID E. SANGER


By DAVID E. SANGER

Secretary of State Rex W. Tillerson offered tantalizing details about how the United States would race inside North Korea to seize its nuclear weapons in the event of a collapse.

Published: December 17, 2017 at 12:00AM

from NYT U.S. http://ift.tt/2yOAd33