NASA’s Parker Solar Probe could solve the mysteries of the solar wind and test Einstein’s theory of relativity.

NASA's Parker Solar Probe has flown into the Sun's corona. Structures known as coronal streamers and the Milky Way can be seen in the footage it captured. Credit: Space.com | NASA/Johns Hopkins APL/Na ...

Federally controlled reservoirs could generate 861 GW to 1,042 GW of floating solar power across the United States, according to a new study by the National Renewable Energy Laboratory (NREL).

Twins are pretty rare, accounting for just 3% of births in the U.S. these days. But new research shows that for primates 60 million years ago, giving birth to twins was the norm.