Previous ... Next ... Planet Profile ... Explorer ... Up a Level ... Home

Strange-Shaped Moon

The irregular shape of Proteus suggests that it has been cold and rigid throughout its history and subject to significant impact cratering. The satellite has an average radius of about 200 km (120 mi) and is uniformly dark with an albedo of about 6%. This image was taken from a range of 870,000 km (540,000 mi).

Listen to caption: Real Audio MP3 Audio