A planet-size object that possibly once visited the solar system may have permanently changed our cosmic neighborhood by warping the orbits of the four outer planets, a new study suggests.

Early in our Solar System’s history, bits of icy debris were scattered and then gradually coaxed into a spiral alignment in ...

If you buy through a BGR link, we may earn an affiliate commission, helping support our expert product labs. Our solar system may not be as isolated as we once thought. According to a new study ...

The solar gold rush in Pakistan was always going to invite a policy response. The numbers alone warranted it. In ...

Even in the inner solar system, spacecraft such as lunar or Mars rovers need alternative power sources. As an astrophysicist and professor of physics, I teach a senior-level aerospace engineering ...