Key Points and Summary – NASA’s X-43A wasn’t a paper study—it was a 12-foot, hydrogen-fueled experimental jet that proved an ...

Amid record-low popularity, Democrats are reckoning with who they’ve become and whether authenticity, not ideology, can bring ...

Quantum clocks built from randomness offer a new perspective on time, merging quantum mechanics with timekeeping and ...

Through the study of the natural and physical world by using observation, experimentation, and testable explanations, we can ...

NASA’s “leopard-spotted” Martian rock may be the clearest potential sign of ancient microbial life yet—proof awaits sample ...

Researchers suggest gravitational waves, not cosmic inflation, may have driven the universe’s formation. This model links ...

Massive volcanic eruptions billions of years ago may have made it snow on Mars, leaving thick buried ice near the planet’s ...

The U.S. Environmental Protection Agency is right to rescind its endangerment finding for greenhouse gas emissions for motor ...

Miracles by definition defy science. But a new research effort attempts to understand what our experiences with them do to ...

Physicists in Toronto observe quantum “negative time”: a pulse of light appears to leave before entering atoms.

Philosopher Jonah Branding’s “decision tree” explores a new road map for identifying consciousness in living things.