Answer to Question 1
ANSWER: As starlight enters the atmosphere, it often passes through regions of differing air density. Each of these regions deflects and bends the tiny beam of starlight, constantly changing the apparent position of the star. This causes the star to appear to twinkle or flicker, a condition known as scintillation.
Answer to Question 2
ANSWER: For blue suns to appear, the size of the suspended particles must be similar to the primary wavelengths of visible light. When these particles are present, they tend to scatter red light more than blue, which causes a bluing of the Sun and a reddening of the sky. Although rare, the same phenomenon can happen to moonlight, making the moon appear blue; thus, the expression once in a blue moon. (The term blue moon also refers to the second full moon in a calendar month that has two full moons).
![People have seen patterns in the stars since ancient times.[5] This 1690 depiction of the constellat](https://biology-forums.com/gallery/47/medium_12359_26_01_13_3_44_40.png)
People have seen patterns in the stars since ancient times.[5] This 1690 depiction of the constellat
A color-enhanced scanning electron micrograph of a neuron cell body (grey) studded with terminal ...
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12 question help need please some questions see photos attached