Finding a tiny planet around bright stars dozens or hundreds of light-years from Earth is extremely difficult.
Chemical changes inside Mars's core caused it to lose its magnetic field. This, in turn, caused it to lose its oceans. But how?
The outer planets’ clouds hide the weirdness within.
Home to the genetically unique Barbary macaques, Gibraltar serves up an intriguing mix of European cultures to residents and tourists alike.
We don't know what causes Miyake events, but these great surges of energy can help us understand the past—while posing a threat to our future.
The transition to personal electric vehicles in the United States is a cornerstone of the plan to decarbonize transportation. But will it work?