The universe is a place of unimaginable beauty and wonder—shimmering galaxies that dance across the cosmic stage, nebulae painted in colors that defy earthly imagination, and stars that burn with the ...

The company is seeking F.C.C. approval to test an idea to reflect sunlight to Earth at night, possibly powering solar panels. Critics say it could be bad for people and wildlife. By Kenneth Chang and ...

We all know a few basic laws of nature, like predators hunt to stay alive, prey stay alert to avoid becoming food, and animals reproduce to pass on their genes. Those rules are straightforward and ...