| Answer | Crossword Clue |
|---|---|
| CERES | Astronomical discovery of 1801 |
| CERES | Discovery of 1801 |
| CERES | Heavenly discovery of 1801 |
| PLUTO | Astronomical discovery of 1930 |
| PULSAR | Astronomical discovery of 1967 |
| URANUS | Astronomical discovery of 1781 |
| QUASAR | Astronomical discovery of the 1960's |
