Friday, December 26, 2014

Airbus promotional video


In 1966 General Electric tried this with United States military jets all of which were powered by GE engines.  The only supersonic bomber the XB-70A and an F-4, F-5, T-38, and F-104 fighter jets. NASA Chief Test Pilot Joe Walker (F-104 pilot) and Carl Cross (XB-70 co-pilot) were killed.

http://en.wikipedia.org/wiki/North_American_XB-70_Valkyrie#Mid-air_collision


Saturday, November 29, 2014

Monday, November 10, 2014

HL Tauri





Protoplanetary disk

HL Tauri (abbreviated HL Tau) is a very young T Tauri star[5] in the constellation Taurus, approximately 450 light-years (140 pc) from Earth[1] in the Taurus Molecular Cloud.[6] The luminosity and effective temperature of HL Tauri imply that its age is less than 100,000 years.

Laniakea

Published on Sep 3, 2014
Superclusters – regions of space that are densely packed with galaxies – are the biggest structures in the Universe. But scientists have struggled to define exactly where one supercluster ends and another begins. Now, a team based in Hawaii has come up with a new technique that maps the Universe according to the flow of galaxies across space. Redrawing the boundaries of the cosmic map, they redefine our home supercluster and name it Laniakea, which means ‘immeasurable heaven’ in Hawaiian.

Read the research paper: http://dx.doi.org/10.1038/nature13674
Read Nature's news story: http://www.nature.com/news/earth-s-ne...

Tuesday, November 4, 2014