Vocabulary # 10

Vocabulary # 10

Stars



Star : A large , hot ball of gases wich is held together by gravity and it gives off its own ligth.



Every day i take my telescope and sit to see the stars that appear in the sky  .

Parallax : The apparent shift in an oject location wen viewed from two positions .



Today i make an investigation about parallax .

Ligth - year : The distance ligth travels in a year .



Ligth year is a form of measuremnt from the earth to space .

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

There are many stars in the constellation so much that not all stars have name . 

Magnitude : The bigthness of a star .

                                             

A magnitude of a star can varie because of the distnace and temperature .

Nebula : A cloud of gas and dust in space .

Nebula is the dust of the space. 

supernova : a star that explodes .

                                                     

I wonder how a supernova is .

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

                                               
A black hole absorb stars maybe planets etc.