Blue Origin’s New Glenn mega-rocket just exploded during testing at a launch site in Cape Canaveral, Florida, according to livestreams from NASASpaceFlight.com and SpaceFlight Now.

Nasa’s Moon landing plans have suffered a “major blow” after Blue Origin’s New Glenn rocket exploded, just a week after SpaceX’s booster rocket crashed into the sea.

Footage of the explosion showed the 320-foot-tall New Glenn rocket igniting on the pad at Cape Canaveral, Fla., at around 9 p.m. local time, before bursting into flames, engulfing the surrounding area...