a system of two stars that revolve around each other under their mutual gravitation

a system of two stars that revolve around each other under their mutual gravitation

a system of two stars that revolve around each other under their mutual gravitation

a system of two stars that revolve around each other under their mutual gravitation

a system of two stars that revolve around each other under their mutual gravitation

a system of two stars that revolve around each other under their mutual gravitation

a system of two stars that revolve around each other under their mutual gravitation

the boundary marking the edge of the sun's influence; the boundary (roughly 100 AU from the sun) between the interplanetary medium and the interstellar medium; where the solar wind from the sun and the radiation from other stars meet

the boundary marking the edge of the sun's influence; the boundary (roughly 100 AU from the sun) between the interplanetary medium and the interstellar medium; where the solar wind from the sun and the radiation from other stars meet

the boundary marking the edge of the sun's influence; the boundary (roughly 100 AU from the sun) between the interplanetary medium and the interstellar medium; where the solar wind from the sun and the radiation from other stars meet