NASA’s twin Voyager probes, which launched in 1977, are the longest-running missions to send data home. But as their power supplies wane, scientists are saying goodbye to one instrument on each spacecraft

Athena has landed on the moon, but the overall status of the spacecraft remains unclear. The mission’s plans include studies of what lies beneath the lunar surface and a whole lot more

The Trump administration’s sudden dismissals have stripped training programs across the nation that bolstered state and local public health departments

Efforts to limit wildfires in a conservative swath of northern Colorado are the latest casualty of the Trump administration’s on-and-off federal spending freeze

Outpatient flu visits and hospitalizations are higher than at any time in the past 15 years