score:7
However you probably can make it and see Moscow for 1-2 hours, but I don't think it worth it to spend time/money for visa, and to be in such a hurry :)
P.S.: Moscow never sleep.
Upvote:-1
You do not need a transit visa if less than 24 hours layover. Passport and plan ticket to you destination is only required.
The only 2 restrictions apply is that if you are going in/out of Belarus or the Crimeana Pennisula.
Look up under Aeroflot visa and passport to back up this claim.
https://www.aeroflot.ru/us-en/before_and_after_fly/airport/visa_and_passport_control
Upvote:3
8-hour layover is completely enough to see some sights in the center of Moscow. To avoid traffic jams just use "Aeroexpress" (airtrain). It departures every 20-30 minutes and it takes about 40 minutes to get from SVO to Belorusskaya railway and metro stations - which is not far from the center of Moscow. So, you'll have about 4-5 hours for sightseeing.
I used to travel a lot and I haven't noticed any difficulties during passport control in SVO. So, I think you have a good chance to wander in the center.