| ____ discovered Jupiter's four largest moons in 1610. |
Big Dipper |
| The ____ comet can be seen about every 75 years. |
Galileo |
| The Sun is one of the 100-400 billion stars in the ____ galaxy. |
Halley |
| William ____ discovered Uranus using a telescope in 1781. |
Herschel |
| The ____ is an asterism in the Ursa Major constellation. |
Milky Way |
| Polaris is the brightest star in the ____ constellation. |
Pluto |
| Clyde Tombaugh discovered the dwarf planet ____ in 1930. |
Ursa Minor |
| The ____ Space Telescope was launched in 2021. |
Webb |
