A self-luminous celestial body consisting of a mass of gas held together by its own gravity in which the energy generated by nuclear reactions in the interior is balanced by the outflow of energy to the surface, and the inward-directed gravitational forces are balanced by the outward-directed gas and radiation pressures.
*up above the world so high*
Yay stars! They are facinating and beautiful. For thousands of years they have captured our imaginations from making patterns to form astrological star signs right through to inspiring physicists and mathematicians to the most well known star-inspired song…ever!
Twinkle, twinkle, little star,
How I wonder what you are!
Up above the world so high,
Like a diamond in the sky!
WHY DO STARS TWINKLE?
Click this picture for instructions!
The scientific name for the twinkling of stars is stellar scintillation (or astronomical scintillation). Stars twinkle when we see them from the Earth’s surface because we are viewing them through thick layers of turbulent (moving) air in the Earth’s atmosphere.
Check out these uber-cute origami stars! I <heart> them sooo much and I am going to make tons of them!