| Invention or discovery | Inventor or discoverer | Type |
|---|---|---|
| Caesium | Gustav Kirchhoff | lithophile element |
| Raschet Blast Furnace | Vladimir Rashet | oven |
| NGC 1251 | United States | double star |
| NGC 1699 | William Parsons, 3rd Earl of Rosse | spiral galaxy |
| Invention or discovery | Inventor or discoverer | Type |
|---|---|---|
| Caesium | Gustav Kirchhoff | lithophile element |
| Raschet Blast Furnace | Vladimir Rashet | oven |
| NGC 1251 | United States | double star |
| NGC 1699 | William Parsons, 3rd Earl of Rosse | spiral galaxy |