President Donald Trump’s $19.1 billion fiscal 2018 spending request for NASA achieves a 0.8% decrease from current levels by terminating a robotic satellite-servicing demonstration mission and, as expected, trimming Earth-science missions.

NASA’s ambitions of reaching Mars with human explorers continue to pay dividends for Johnson Space Center, the highest funded of the agency’s 10 field centers.

Despite doubts about funding for a multibillion dollar lander to seek evidence of life on Jupiter’s moon Europa, NASA is telling those interested in providing instruments for the mission not to lose hope.

As NASA charts a course to Mars for human explorers with ever more capable hardware and software systems, policymakers, mission managers and those who launch face some tough ethical issues.

The rocket engine battle between the 500,000-lb.-thrust class Aerojet Rocketdyne AR1 and Blue Origin BE-4 is heating up.

Reaction Engines has begun construction of a test facility where it plans to perform the first ground-based demonstration of its Synergetic Air-Breathing Rocket Engine.

Exploration Mission-1, NASA’s planned first flight of its heavy-lift Space Launch System and Orion deep-space crew capsule, won’t make its target launch date of November 2018.

NASA’s Inspector General has found the agency lagging in efforts to develop a new spacesuit for future human deep-space missions.