Blue Origin CEO Dave Limp says the root cause of the May explosion remains unknown, with early analysis pointing to the aft section of the first stage.

CEO says reconstruction has begun, though the timetable looks ambitious

Blue Origin CEO Dave Limp says the root cause of the May explosion remains unknown, with early analysis pointing to the aft section of the first stage.

But the company is still claiming that New Glenn will return to flight this year.

Blue Origin won't be "rebuilding the same pad," and will instead adopt a configuration that was in development for a larger variant of its New Glenn rocket.

Blue Origin remains uncertain about the cause of last month's New Glenn rocket explosion, as the company pushes to relaunch its mega-rocket later this year.