I Like universe and stars, Milky way and others galaxies, I Studied solar physic on our system, i think andromedia and our galaxy we be collusion en 3 billions years, the both will form one big galaxy. Actually andromedia is 2.5 Millions km of distance

One of my favorite topics

COURS TRES TRES BIEN EXPLIQUE MERCI A MONSIEUR LE FORMATEUR

the best thing he entire universe like wow it was one of the best series I have ever seen absolute W

GOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOD!

THANK YOU VERY MUCH

Thank you Phil Plait for your dedication. Very easy to understand and very well spoken.

It was good

One of the nest learning platforms across the web !

Really made it easy to understand, good job team.