Good cheap photography camera?

I absolutely love taking pictures of the sky and nature scenes, stuff like that, and as of now I'm just using my iPhone 4 camera that I've had for 3 years, so the pictures aren't the best quality ever and I'm always running out of space. I've been wanting a really nice camera for awhile but I can't really afford anything over 100 dollars. Does anyone know a good camera for 100 dollars or less? That would be great!

You are at the bottom of the digital camera barrel at $100

You can find a decent waterproof, drop proof and freeze proof P&S camera for under $90. It is the Nikon Coolpix S31

After reading about the camera specifications and decide you want something more in a digital camera, you are going to have to raise your budget to closer to $300 and start saving your pennies

For $100 you will be able to afford a basic point and shoot.

However will still be a 1000 times better than your phone - for a start it will have optical zoom, something your iPhone lacks.

I can feel your pain - you want quality, but can't really afford it.
Your best move right now is to get a used camera. You have a few options:
1. Get a film SLR. This will give you the most for your money up front, but the processing costs will add up over time. Also, since film can't give you immediate feedback like digital, the learning curve will take longer.
2. Get an advanced point and shoot like Canon's G series. These advanced cameras offer manual exposure, like SLRs, so you can control the look of the image.
3. Get a bridge camera - A bridge camera is just a fancy term used for a camera that is too big and advanced to be a point and shoot, but doesn't have the ability to remove and change lenses like an SLR. These have better image quality and more advanced settings than regular P&S cameras.

Go to keh.com and do a search for cameras within your price range.