Earth, between sweltering Venus and frozen Mars, formed and orbits within a band where water could persist in solid, liquid, and gaseous phases. Mars had surface water, but not as much as Earth, and ...

NASA's Juno spacecraft has sent back new, eye-catching images of Jupiter, capturing intricate views of the planet's turbulent atmosphere as well as one of its lesser-known moons. On Oct. 23, the ...

potentially transforming theories about the solar system’s formation and guiding future astronomical missions. Solar and ...