I'm no space exploration expert, yet I find this mission to Mars and other space related news fascinating. Is there a website that explains the details of this

I'm no space exploration expert, yet I find this mission to Mars and other space related news fascinating. Is there a website that explains the details of this kind of mission? Duration of the trip, planning, payload, technology, space craft, biggest challenges, back to Earth mission, etc. I'd love to learn more about this.