In a surprising twist to our understanding of exoplanetary systems, astronomers have uncovered three Earth-sized planets ...

Close companions can influence stellar evolution in many ways. While some companions can be detected around young stellar ...

"If our solar system is indeed moving this fast, we need to question fundamental assumptions about the large-scale structure ...

For the first time in more than five years, humanity has launched a mission to Mars — but it won't be arriving at the Red ...