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The Paradoxes of the Late Hesperian Mars Ocean

Mars' Early Ocean

The long-standing debate on the existence of ancient oceans on Mars has been recently revived by evidence for tsunami resurfacing events that date from the Late Hesperian geological era.

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Mars TOP STORIES

Curiosity Captured Two Solar Eclipses on Mars

Phobos Eclipses The Sun

When NASA's Curiosity Mars rover landed in 2012, it brought along eclipse glasses. The solar filters on its Mast Camera (Mastcam) allow it to stare directly at the Sun.

Mysterious Martian Methane Bursts Confirmed

Martian methane releases are rare, episodic, and often debated, but scientists have discovered evidence of a methane emission in June 2013, which constitutes the first confirmation of a methane release on Mars.

Rivers Raged On Mars Late Into Its History

Long ago on Mars, water carved deep riverbeds into the planet's surface--but we still don't know what kind of weather fed them.

Drone Maps Icy Lava Tube in Iceland in Preparation for Cave Exploration on the Moon and Mars

The SETI Institute and Astrobotic Technology, Inc. are announcing the successful mapping in 3D of the interior of an ice-rich lava tube in Iceland using a LiDAR-equipped drone.

Pathfinder May Have Explored the Edges Of An Early Mars Sea In 1997

NASA's first rover mission to Mars, the Pathfinder, imaged an extraterrestrial marine spillover landscape 22 years ago, according to a new paper by Planetary Science Institute Senior Scientist Alexis Rodriguez.

Mars Camera CaSSIS Returns Image Of InSight On Mars

Three years ago, on 14 March 2016, the Bernese Mars camera CaSSIS started its journey to Mars with the ExoMars Trace Gas Orbiter spacecraft.

Opportunity's Last View Of Mars

Over 29 days last spring, NASA's Mars Exploration Rover Opportunity documented this 360-degree panorama from multiple images taken at what would become its final resting spot in Perseverance Valley.

SWIM Project Maps Potential Sources of Mars Water

Missions carrying humans to Mars will require on-site resources, and a project led by Planetary Science Institute (PSI) scientists Nathaniel Putzig and Gareth Morgan is mapping the availability of potential shallow water-ice sources across the surface of the Red Planet.

Signs Of Ancient Flowing Water On Mars

These images from ESA's Mars Express satellite show a branching, desiccated system of trenches and valleys, signs of ancient water flow that hint at a warmer, wetter past for the Red Planet.

NASA's Opportunity Rover Mission on Mars Comes to End

One of the most successful and enduring feats of interplanetary exploration, NASA's Opportunity rover mission is at an end after almost 15 years exploring the surface of Mars and helping lay the groundwork for NASA's return to the Red Planet.

Study Suggests Possibility of Recent Underground Volcanism on Mars

A study published last year in the journal Science suggested liquid water is present beneath the south polar ice cap of Mars.

A Dune Field Near Nili Patera

In this image many sand dunes are visible. They have an elongated crescent form and are called "barchan dunes." They are formed by the continuous action of the wind blowing in the same direction.

InSight's Seismometer Now Has a Cozy Shelter on Mars

For the past several weeks, NASA's InSight lander has been making adjustments to the seismometer it set on the Martian surface on Dec. 19.

Curiosity Measures a Martian Mountain's Gravity

Apollo 17 astronauts drove a moon buggy across the lunar surface in 1972, measuring gravity with a special instrument. There are no astronauts on Mars, but a group of clever researchers realized they have just the tools for similar experiments with the Martian buggy they're operating.