NASA plans to make a major announcement tomorrow on the “fate of Mars’ atmosphere,” and the scientific community is buzzing with excitement on what it might be.

The reveal is set for 2 p.m. EST, and will feature officials associated with the Mars Atmosphere and Volatile Evolution (MAVEN) probe, according to an iAfrica report.

If the MAVEN space probe made the observations, then that gives some clues on what could be announced. MAVEN data is used to “determine the role that loss of volatiles from the Mars atmosphere to space has played through time, giving insight into the history of Mars’ atmosphere and climate, liquid water, and planetary habitability,” according to MAVEN’s mission page.

The last major reveal by NASA was that there was evidence water currently existed on the Red Planet and that it flowed seasonally.

The exact statement on the upcoming announcement from NASA reads: “NASA to announce new findings on fate of Mars’ atmosphere. NASA will provide details of key science findings from the agency’s ongoing exploration of Mars during a news briefing in the James Webb Auditorium at NASA Headquarters in Washington. The event will be broadcast live on NASA Television and the agency’s website.”

The speakers include Jim Green, Bruce Jakosky, Jasper Halekas, Yaxue Dong, and Dave Brain. Jakosky is the MAVEN principal investigator, Halekas the solar wind ion analyzer lead, Dong is a science team member, and Brain is a co-investigator at the Laboratory for Atmospheric and Space Physics (LASP), according to a SlashGear report.