When the object known as 3I Atlas entered our solar system, astronomers quickly tried to explain what it was. Early observations suggested it might be another interstellar comet, similar to previous ...

Fresh evidence of volcanic activity on Mars is reshaping how scientists think about the planet’s potential to host life, past or present. Instead of a cold, geologically dead world, Mars increasingly ...

A working ranch in the rolling hills of coastal Santa Barbara County is doubling as a classroom, research site and testing ground for a different approach to agriculture, one focused ...