A cluster of recent theoretical papers has laid out mathematical frameworks for propelling spacecraft at speeds ranging from ...
A tiny spacecraft orbiting Earth appeared to successfully unfurl a solar sail Tuesday to test the potential of using only sunlight for propulsion, mission officials said. Deployment commands were sent ...
NASA's Parker Solar Probe completed its 18th close approach to the sun on Dec. 28, 2023, matching its own distance record by skimming just about 4.51 million miles (7.26 million kilometers) from the ...