QUESTION: Which of the following is not a planet of the sun?
A. Sirius
B. Mercury
C. Saturn
D. Earth
ANSWER: Sirius
| Star | Common Name | Distance from Earth | Description |
| Sirius | The Dog Star | 8.6 light-years | Brightest star in the night sky, part of the Canis Major constellation |
| Name of Planet | Average distance from the Sun | Diameter | Description |
| Mercury | 57.9 million km | 4,880 km | Closest planet, hot days and cold nights due to lack of atmosphere |
| Venus | 108.2 million km | 12,104 km | Thick atmosphere, intense greenhouse effect, often called the “Evening Star” |
| Earth | 149.6 million km | 12,742 km | Our home planet, diverse biosphere and abundant liquid water |
| Mars | 227.9 million km | 6,779 km | Referred to as the “Red Planet,” evidence of past liquid water |
| Jupiter | 778.3 million km | 139,820 km | Largest planet, gas giant with prominent bands and the Great Red Spot |
| Saturn | 1.4 billion km | 116,460 km | Known for its spectacular ring system and numerous moons |
| Uranus | 2.9 billion km | 50,724 km | Tilted axis of rotation, unique blue-green color due to methane |
| Neptune | 4.5 billion km | 49,244 km | Farthest from the Sun, known for its deep blue color and strong winds |
