Texas-based photographer Trey Ratcliff's shot of the shuttle as it entered the clouds above the Kennedy Space Center is striking.
And Stefanie Gordon of New Jersey reports she got quite a view from her seat aboard aboard a passenger jet after the shuttle broke through the clouds. "Three things about my flight," she wrote when she posted the photo. "I can lay down across 3 seats just fine, it was freezing & I got to see this."
There are many more images showing up on Twitpic.
Update at 5:31 p.m. ET: As happens when something goes viral on the internet, Stefanie Gordon is now a Twitter celebrity. Mashable reports that since her picture started getting attention, she's added some 1,000 followers.
"I don't have that many Twitter followers, and I basically tweet about sports," Gordon tells Mashable. "I really didn't expect it to go as viral as it did."
Although other people on the plane also took photos, the 33-year-old event planner says it seems that she's the only one who posted them to Twitter.
Gordon also added a short video of the shuttle.