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  1. 1.  Sirius is the brightest star in the night sky. Sirius can even be observed in daylight with the naked eye under the right conditions. Ideally, the sky should be very clear, with the observer at a high altitude, the star passing overhead, and the Sun low down on the horizon
  2. 2.  The Sun is the star at the centre of the solar system  It is almost perfectly spherical and consists of hot plasma  with magnetic fields  It has a diameter of about 1,392,000 km, and  its weight is 330,000 kg It is 109 times that of Earths weight
  3. 3.  A pole star is a visible star, especially a prominent one, that is approximately aligned with the Earths axis of rotation; that is, a star whose apparent position is close to one of the celestial poles, and which lies approximately directly overhead when viewed from the Earths North Pole or South Pole Pole Star is also known as the North Star.
  4. 4.  The stars forming a group that recognisable shape is called a constellation Some of the examples are great bear,orion,cassiopeia,leo major etc
  5. 5.  VY Canis Majoris  is the largest known star  and also one of the most luminous. It is a red hypergiant in the constellation Canis Major. Placed at the center of our solar system
  6. 6. Stars are huge balls of glowing gas.Deep inside a star, a gas calledhydrogen is changed intoa gas called helium.
  7. 7.  In some cultures, the stars represent part of the cosmos, such as the heavens or the home of the gods, or a path between the earth and another world The Paiute of North America describe the stars as the children of the sun and moon. Because the sun loves to eat his children, the stars disappear whenever he rises above the horizon. However, the moon, their mother, often dances happily across the sky with the stars. To the Yakut of Siberia, the stars are crystal windows that allow the gods to look down at earth