human
I'm looking for some good websites on astronomy.
assistant
I suggest you start by checking out the following links: 
1. Space.com - https://space.com/astronomy-websites.html
2. Sky and Telescope - https://www.skyandtelescope.com/astronomy-resources/best-astronomy-websites/
3. Astronomy Magazine - http://www.astronomy.com/astronomy-magazine/astrophotography-websites.html
4. NASA's Astronomy Picture of the Day - https://apod.nasa.gov/apod/astropix.html