#FollowFriday

Every Friday, @CNNLightYears will suggest interesting and exciting space and science Twitter accounts to follow.

Today, @CNNLightYears is giving a #FollowFriday to the crew of STS-135 (#STS135), the final mission of space shuttle Atlantis. This four-member crew blasted off on July 8 for what will now be a 13-day mission to deliver supplies to the International Space Station.

@Astro_Ferg
Commander Christopher Ferguson has shared some photos from before the launch, as well as replied to some space enthusiasts.

@Astro_Doug
Pilot Douglas Hurley has only posted a few tweets so far, but is relatively new to Twitter.

@Astro_Sandy
Mission Specialist 1 Sandy Magnus is pretty active on Twitter. She replies to a lot of tweets, as well as shares what is going on at NASA.

@Astro_Rex
Mission Specialist 2 Rex J. Walheim sent out many tweets about the preparation for mission STS-135, including that it was an “emotional day” and “very tough” as they finished the last space shuttle simulation before the final launch.

@Astro_Ron, who is on board the International Space Station. While not a member of Atlantis' crew, Ron Garan has been actively tweeting and posting photos of STS-135 and his own crew.

You can also follow updates from @CNNLightYears.