Question

Is pole star also called as Sirius?

Answer 1

No, the Pole Star and Sirius are not the same. They refer to different stars in the night sky.

1. **Pole Star (Polaris):**
   - **Name:** Polaris
   - **Location:** It is located nearly at the North Celestial Pole, which is why it’s often called the Pole Star. It’s situated in the constellation Ursa Minor.
   - **Importance:** Polaris is significant because it appears almost directly above the Earth's North Pole. This makes it a key reference point for navigation in the Northern Hemisphere, as it remains relatively fixed in the sky while other stars appear to rotate around it.

2. **Sirius:**
   - **Name:** Sirius
   - **Location:** It is located in the constellation Canis Major, which is Latin for "Greater Dog."
   - **Importance:** Sirius is the brightest star in the night sky and is often referred to as the "Dog Star." It is prominent in the winter skies of the Northern Hemisphere and has been important in various cultures and astronomical observations due to its brightness.

In summary, Polaris and Sirius are distinct stars with different locations and characteristics. Polaris is crucial for its role in navigation due to its position near the North Celestial Pole, while Sirius stands out for its brightness and visibility in the night sky.

Answer 2

No, **Pole Star** (also called **Polaris**) and **Sirius** are two different stars.

### 1. **Pole Star (Polaris)**
- **Location:** Polaris is located near the North Celestial Pole, meaning it appears almost directly overhead at the North Pole. It doesn't move much in the night sky because of its alignment with Earth's rotational axis.
- **Function:** It is known as the guiding star for navigation in the Northern Hemisphere because its position marks "true north."
- **Constellation:** Polaris is the brightest star in the constellation **Ursa Minor** (the Little Dipper).
- **Brightness:** While Polaris is quite bright, it is not the brightest star in the night sky.

### 2. **Sirius (the Dog Star)**
- **Location:** Sirius is far from the North Celestial Pole, located in the constellation **Canis Major**.
- **Brightness:** Sirius is the **brightest star** in the entire night sky.
- **Distance from Earth:** It is about 8.6 light-years away from Earth, making it one of our closest stellar neighbors.
- **Color:** Sirius is a white or blue-white star, sometimes appearing to flicker in multiple colors because of atmospheric effects.

### Key Differences:
- **Polaris** serves as a navigational star in the northern sky, while **Sirius** is the brightest star overall.
- **Polaris** is positioned near the North Pole, and **Sirius** is found far south of it.
  
In summary, while both stars are prominent in the sky, **Polaris** is the Pole Star, and **Sirius** is the brightest star. They are not the same.