planetary orbits in orbit reveal new images of dwarf planet stars . They show new views of the two brightest spots in a galaxy . However , scientists are still not able to explain what they are . Dawn spacecraft made its first planetary orbit around Ceres on 23 April .
Nasa scientists in California reveal new images of dwarf planet Ceres . They show new views of the two brightest spots in a crater . However , scientists are still not able to explain what they are . Dawn will begin its first science orbit around Ceres on 23 April .