Well, sorta. Glowstone, as we know it today, only exist in Markus Persson's imagination. But the real glowstone doesn't glow. It is created by a celestial collision. There is only a small fraction of earth's meteorites has this. That means it is found in outer-space.
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You get Glowstone Dust from breaking blocks of Glowstone, you get 2-4 from each block.
You make Glowstone Blocks with 4x Glowstone Dust in a square formation, on your crafting grid.
Glowstone is crafted by 4 glowstone (as shown in the screenshot) lined into a 2x2 box in the bottom left of the crafting table interface.
Its called a redstone lamp. It is crafted with a glowstone in the middle and four pieces of redstone around it.
Go to the Nether, and break glowstone, it looks yellow and glows brightly, and glowstone dust will fall. Pick up the dust and put it in a 2x2 formation in your crafting table. This will give you glowstone blocks. Also, if you have a silk touch enchanted pickaxe, you may break the blocks and have them built automatically.