Click to enlarge video or view it below.

What do walrus tusks and amber beads have to do with everyday life in Dublin during the Viking Age?

The return of supersonic passenger travel is one step closer to reality with NASA’s award of a contract for the preliminary design of a low boom flight demonstrator aircraft. This is the first in a series of X-planes in NASA’s New Aviation Horizons initiative, introduced in the agency’s Fiscal Year 2017 budget.