Vocabulary N°10

1. Star: A large,hot ball of gases, which is held together by gravity and gives off its own light.

    

• 
  
  I can´t count the stars of the sky.

2. Parallax: The apparent shift in an object´s location when viewed from two positions.

• 
  
  Astronomers use the parallax to measure distances to celestial bodies.

3. Light-year: The distance light travels in a year.



• 
  
  Astronomers use a unit called light-year(ly).

4. Constellation: A number of stars that appears to form a pattern.



• 
  
  Rigel is a star in the constellation Orion.

5. Magnitude: The brightness of a star.

 

• 
  
  There are two types of magnitude. The absolute and the  apparent magnitude.

6. Nebula: A cloud of gas and dust in space.



• 
  
  The nebula have hydrogen and gas.

7.Supernova: A star that explodes.



• 
  
  Supernova becames neuton stars.

8. Black Hole: An object whose gravity is so strong that light cannot escape it.



• 
  
  A black hole is a star.