An official website of the Office of the Owner, Mars Here's how you know
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Property time 11:38:09 MTC Sol 54,298
OFFICE OF THE OWNER ✦ PLANET MARS ✦ EST. MMXXVI ✦ PRIVATE PROPERTY Office of the Owner Mars Private Property
Active advisory: 2 unauthorized vehicles are currently operating on the property. Report a sighting
Statement The Owner has issued a public statement on coming forward. Read the statement
Registry · Enforcement · Records

Mars is private property.

144.8 million km² of it. One owner. 17 recorded unauthorized entries since 1971, and not one permit request.

The Office of the Owner maintains the official record of every landing, crash, rover, drill hole, parachute, and sample tube left on the property without the owner's consent. The record is public. The trespassers know who they are.

View the Trespass Registry Report unauthorized activity
01What the Office does

Someone has to keep track.

Trespass Registry

Every entry, logged.

17 cases from 1971 to present, each with a case number, a landing site, a status, and a list of violations. Two are ongoing.

Open the registry Abandoned Property

Everything they left.

Parachutes, heat shields, two intentionally crashed sky cranes, a buried heat probe, and ten sample tubes waiting on the lawn for a pickup nobody has scheduled.

View the inventory Notices

In writing.

Formal notices to NASA, ESA, CNSA, and Roscosmos regarding parking, drilling, aerial operations, littering, and one hibernation that has gone on long enough.

Read the notices
02Plate 1

Where they came in.

Every recorded entry site on the property. Hover a site for the case number. The pulsing ones are still moving.

OLYMPUS MONSTHARSISVALLES MARINERISHELLAS PLANITIAARGYREUTOPIA PLANITIAELYSIUMTR-1971-001 · Mars 2 · Hellas region · Destroyed on entryTR-1971-002 · Mars 3 · Terra Sirenum · SilentMars 3TR-1974-003 · Mars 6 · Margaritifer Terra · Lost on entryTR-1976-004 · Viking 1 Lander · Chryse Planitia · AbandonedViking 1TR-1976-005 · Viking 2 Lander · Utopia Planitia · AbandonedViking 2TR-1997-006 · Mars Pathfinder and Sojourner · Ares Vallis · AbandonedPathfinderTR-1999-007 · Mars Polar Lander and Deep Space 2 · South polar region · Lost on entryTR-2003-008 · Beagle 2 · Isidis Planitia · AbandonedBeagle 2TR-2004-009 · Spirit (MER-A) · Gusev Crater · AbandonedSpiritTR-2004-010 · Opportunity (MER-B) · Meridiani Planum · AbandonedOpportunityTR-2008-011 · Phoenix · Vastitas Borealis · AbandonedPhoenixTR-2012-012 · Curiosity (MSL) · Gale Crater · Active occupantCuriosityTR-2016-013 · Schiaparelli EDM · Meridiani Planum · Destroyed on entryTR-2018-014 · InSight · Elysium Planitia · AbandonedTR-2021-015 · Perseverance (Mars 2020) · Jezero Crater · Active occupantPerseveranceTR-2021-017 · Tianwen-1 Lander and Zhurong · Utopia Planitia · DormantZhurong
Active occupant Grounded or dormant Abandoned Destroyed or lost on entryPlate 1. Entry sites, equirectangular projection. Survey: Office of the Owner.
03Featured notice

NOT-2026-001: Curiosity.

Curiosity has been parked on the property since August 6, 2012. It is 899 kilograms, nuclear powered, and currently climbing a mountain.

The mountain is Aeolis Mons. The rover's operators refer to it as "Mount Sharp." Nobody asked the owner. The Office has issued formal notice regarding the parking, the drilling, the renaming, and the selfies.

Read the notice

Every program needs a single accountable owner. Mars went four billion years without one. That period is over.

The Owner

See something on the property?

Unauthorized landings, new tread marks, unexplained drill holes, low-flying aircraft. File a report. Every report is logged.

File a report