NASA is set to announce on Monday what its calling "an exciting new discovery" about Earth's moon.

The space agency was tightlipped about further details, but did drop a clue.

"This new discovery contributes to NASA’s efforts to learn about the moon in support of deep space exploration," a press release published online Thursday said.

That seems to indicate a connection to NASA's Artemis program, which aims to send humans back to the moon in 2024 and then on to Mars as early as the next decade.

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The press release also said the discovery came from the Stratospheric Observatory for Infrared Astronomy, known as SOFIA for short. SOFIA is a modified 747 airplane that carries a 9-foot telescope into the atmosphere to get a clear view of the universe and the solar system.

The NASA news prompted widespread speculation on social media ranging from tongue-in-cheek references to astrology to hopes about finding water or ice on the moon.

The big reveal will be made during a press conference with reporters at noon EDT on Monday. The public can listen to a live audio feed on the agency's website.

Presenters at the media briefing include:

-Paul Hertz, astrophysics division director at NASA Headquarters in Washington.

-Jacob Bleacher, chief exploration scientist for the Human Exploration and Operations Mission Directorate at NASA Headquarters.

-Casey Honniball, postdoctoral fellow at NASA’s Goddard Space Flight Center in Greenbelt, Maryland.

-Naseem Rangwala, project scientist for the SOFIA mission at NASA’s Ames Research Center in Silicon Valley, California

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