The Mars ocean theory states that nearly a third of the surface of Mars was covered by an ocean of liquid water early in the planet's geologic history...

The possibility of life on Mars is a subject of interest in astrobiology due to the planet's proximity and similarities to Earth. To date, no conclusive...

The Mars ocean theory suggests that nearly a third of the surface of Mars was once covered by water, though the water on Mars is no longer oceanic. Water...

recognized that Mars was far colder and drier than Earth. The presence of oceans was no longer accepted, so the paradigm changed to an image of Mars as a "dying"...

the Ancient Crust of Mars". Science. 287 (5453): 547a. doi:10.1126/science.287.5453.547a. Heezen, B. (1960). "The rift in the ocean floor". Scientific American...

Mars is the fourth planet from the Sun. It is also known as the "Red Planet", because of its orange-red appearance. Mars is a desert-like rocky planet...

Mars 2020 mission, including the Perseverance rover. Geography of Mars Geological history of Mars Hesperian List of plains on Mars Mars ocean theory Tornabene...

Mars Direct is a proposal for a human mission to Mars which purports to be both cost-effective and possible with current technology. It was originally...

S2CID 4321529. Head III, J. W. (10 December 1999). "Possible Ancient Oceans on Mars: Evidence from Mars Orbiter Laser Altimeter Data" (PDF). Science. 286 (5447):...

providing evidence to the presence of an ocean during this period. Arctic Basin (Earth's "North Polar Basin") Mars ocean hypothesis (Oceanus Borealis) Planum...

humans to Mars has been the subject of aerospace engineering and scientific studies since the late 1940s as part of the broader exploration of Mars. Long-term...

Sol (borrowed from the Latin word for sun) is a solar day on Mars; that is, a Mars-day. A sol is the apparent interval between two successive returns...

The two moons of Mars are Phobos and Deimos. They are irregular in shape. Both were discovered by American astronomer Asaph Hall in August 1877 and are...

information from InSight, reported that the planet Mars has a radioactive magma ocean under its crust. Mars has a number of distinct, large-scale surface features...

Cydonia (/sɪˈdoʊniə/, /saɪˈdoʊniə/) is a region on the planet Mars that has attracted both scientific and popular interest. The name originally referred...

Mission to Mars: My Vision for Space Exploration is a 2013 book written by retired NASA astronaut Buzz Aldrin and Leonard David. The book was released...

his theory did not give very satisfactory predictions and was largely ignored. When Kepler studied his boss Tycho Brahe's observations of Mars's position...

An ocean liner is a type of passenger ship primarily used for transportation across seas or oceans. Ocean liners may also carry cargo or mail, and may...

theorized to have had large water oceans. The Mars ocean hypothesis suggests that nearly a third of the surface of Mars was once covered by water, and a...

The Mars carbonate catastrophe was an event that happened on Mars in its early history. Evidence shows Mars was once warmer and wet about 4 billion years...

of the Moon. "One of the challenges to the longstanding theory of the collision, is that a Mars-sized impacting body, whose composition probably would...

to colonize Mars before the year 2040. The Mars Underground, Mars Homestead Project / Mars Foundation, Mars One (defunct in 2019), and Mars Artists Community...

The colonization of Mars is the proposed process of establishing permanent human settlements on the planet Mars. Most colonization concepts focus on settling...

CO2, could have made Mars more Earth-like in the past. Mars may have once had a much thicker and warmer atmosphere, and oceans or lakes may have been...

instance Syrtis Major) on the lighter surface as oceans. By the late 1920s, however, it was known that Mars is very dry and has a very low atmospheric pressure...

Glenelg (or Glenelg Intrigue) is a location on Mars near the Mars Science Laboratory (Curiosity rover) landing site (Bradbury Landing) in Gale Crater marked...

the zero elevation datum is based on sea level (the geoid). Since Mars has no oceans and hence no 'sea level', it is convenient to define an arbitrary...

higher chances of finding evidence for whether an ancient ocean existed on the northern part of Mars. It was eventually selected as the final landing area...

SpaceX Mars colonization program (also referred to as Occupy Mars) is the planned objective of the company SpaceX, and particularly of its founder Elon...

alteration by water (hi-res) The Mars ocean hypothesis postulates that nearly a third of the surface of Mars was covered by an ocean of liquid water early in...