Planets and other bodies in the Solar System create a gravitational tug on the Sun, causing it to wobble around a little bit. As a result, the barycenter of the Solar System, or the common center ...

7 solar system mysteries scientists haven’t solved yet. Why is our moon so weird? Was there ever life on Mars? Big cosmic questions lurk in our celestial backyard.

"Just as bats send out sonar pulses in every direction and use the return signal to create a mental map of their surroundings, we used the sun's solar wind, which goes out in all directions, to ...