Adjust parameters like hue, colors,lightness and levels so as to get light(yellow) & dark(blue) halves...
For reflection, copy the bulb,flip vertical,adjust properly & reduce opacity...
step 3 of 8
Resize the globe and position it inside the bulb..Reduce opacity to do above adjustments..
step 4 of 8
Place the globe below bulb layer and add layer mask to the bulb layer...
Mask the part which covers the globe..!!
step 5 of 8
Add sun to the lighter side to show sunrise...This is also achieved by layer masking...
step 6 of 8
Needless to say,the darker side resembles night...so get a moon to add to the effect...again using layer masking technique...
step 7 of 8
Add some stars surrounding the moon using paint brush tool..This gives a finishing touch to the overall concept...