This page is from issue 40 of the Teen Titans comic from Geoff Johns run circa 2006. If you're a fan of the "Young Justice" cartoon series then you'll recognize this as an important and enduring plot point to miss martians character and story arcs throughout the story. This is her third comic appearence and the first time she is exposed as a "White Martian".
The story opens with the Teen Titans regrouping after the previous issue’s accusation that a team member is a traitor. The team is searching for Raven and traveling aboard Bombshell’s Quantum Jet.
Miss Martian (M’gann M’orzz) phases aboard the jet to intercept the Titans. During the confrontation Bombshell detonates incendiary devices, forcing Miss Martian to revert into her true White Martian form, which visibly exposes her as a White Martian to the other Titans. This revelation immediately causes panic and suspicion that she is the traitor.
A fight breaks out between Miss Martian (in her revealed form) and the Titans; the team’s trust fractures as they react to what appears to be betrayal.