has polaris always been the north star also known as the pole star
Pole star The identity of the pole stars gradually changes over time because the celestial poles exhibit a slow continuous drift through the star field. The primary reason for this is the precession of Earth's rotational axis, which causes its orientation to change over time. Precession causes the celestial poles to trace out circles on the celestial sphere approximately once every 26,000 years, passing close to different stars at different times (with an additional slight shift due to the proper motion of the stars).
Top Gear: Polar Special Top Gear: Polar Special is a special edition episode of BBC motoring programme Top Gear that was first broadcast on 25 July 2007 on BBC Two. The episode follows presenters Jeremy Clarkson and James May in their successful attempt to be the first people to reach the Magnetic North Pole in a motor vehicle. For added drama and competition they race against presenter Richard Hammond who travels by dog sled, the traditional means of transport around the Arctic.