Photos: Orion launches at dawn

As a United Launch Alliance Delta 4-Heavy rocket prepares to carry NASA’s Orion spaceship on its first orbital flight test, we look back at the seven previous Heavy launches.

Joining the live video podcast on Friday, April 5, are Emilee Speck, space journalist with FOX Weather, and Stephen Clark, space reporter with Ars Technica. The show begins at 4 p.m. EDT (2000 UTC) on the Spaceflight Now YouTube channel.

The towering structure to be used for liftoffs of NASA’s Space Launch System rolled from a construction site to launch pad 39B at the Kennedy Space Center in Florida this week, arriving at the seaside complex Friday for a week of fit checks.