In which part of the sky and at what time of year are the following stars and constellations seen: great bear, the pole star and the orion. 

As the earth orbits the sun, different constellations seem to rise and set like the sun in the sky. Therefore, different constellations are visible at a given position on the earth at different times of the year.Great Bear: (saptarishi) constellation can be distinctly seen during April in summer in the Northern skies.Pole Star: (Dhruva Tara) is the star which appears to be stationary near the Northern horizon. As the star is located in equatorial plane at a very large distance, it appears to be stationary. It can also be located by a line joining the pointer stars, of the great bear, and extending it in the north direction, as shown below in Fig.  It is seen throughout the year in night sky exactly above the north pole of the earth.Orion: This constellation is visible during winter in the northern skies.