The best way to show you is to give you a picture. Here is a photograph of the Earth seen from the moon. As you can see, it is round although becuase of the position of the Sun you only see about half of it. The other half is in darkness.
On the other side of the photo is a picture taken a bit close to the Earth. This is a picture taken from the Gemini 12 spacecraft as it passed over The Red Sea.
Thanks for your question and have a good summer.
Answer #% % filename Document8 page% % page 1 of% % numpages 1 % % date \@ "MMMM d, yyyy"June 26, 1995