Photos: Delta 4-Heavy with Orion on eve of launch

In a major shakeup at NASA Headquarters, agency Administrator Jim Bridenstine said Wednesday that Bill Gerstenmaier, the widely respected director of human spaceflight, has been replaced in the midst of an ambitious push to meet the Trump administration’s directive to send astronauts back to the moon within five years.

The Trump administration is proposing $19.1 billion for NASA in its fiscal 2018 budget blueprint, a 0.8 percent decrease from 2017 funding levels, focusing on deep space exploration, both human and robotic, and increased public-private partnerships to lower costs and encourage private sector innovation.

New video recorded during NASA’s Orion return through Earth’s atmosphere provides viewers a taste of what the vehicle endured as it returned through Earth’s atmosphere during its Dec. 5 flight test.