Curious Mars

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Fossilized Rivers Suggest Mars Was Once Warm and Wet

© University College London

Fossilized River

Extensive systems of fossilised riverbeds have been discovered on an ancient region of the Martian surface, supporting the idea that the now cold and dry Red Planet had a warm and wet climate about 4 billion years ago, according to UCL-led research.


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Water Not Found At Location Of Mars' Seasonal Streaks

© NASA

THEMIS Measurements on Mars

Seasonal dark streaks on Mars that have become one of the hottest topics in interplanetary research don't hold much water, according to the latest findings from a NASA spacecraft orbiting Mars.

Full-Circle Vista from NASA Mars Rover Curiosity Shows Murray Buttes

Full-Circle Vista from NASA Mars Rover Curiosity Shows Murray Buttes

Eroded mesas and buttes reminiscent of the U.S. Southwest shape part of the horizon in the latest 360-degree color panorama from NASA's Curiosity Mars rover.


Veins on Mars Formed by Evaporating Lakes

Veins on Mars Formed by Evaporating Lakes

Mineral veins found in Mars's Gale Crater were formed by the evaporation of ancient Martian lakes, a new study has shown.


Today's Gullies On Mars Are Probably Not Formed by Liquid Water

Today's Gullies On Mars Are Probably Not Formed by Liquid Water

New findings using data from NASA's Mars Reconnaissance Orbiter show that gullies on modern Mars are likely not being formed by flowing liquid water.


Viking Data Lives 40 Years Later

Viking Data Lives 40 Years Later

Forty years ago, NASA's Viking mission made history when it became the first mission to successfully land a fully operational spacecraft on Mars.


NASA Viking at 40 Symposium Lectures

NASA Viking at 40 Symposium Lectures Video in Story

This week NASA hosted the Viking Mars Landers 40th anniversary symposium. In 1976 Viking 1 and 2 were the first landers to successfully land on Mars.


An Interesting Unnamed Large Crater On Mars

An Interesting Unnamed Large Crater On Mars

This striking perspective view from ESA's Mars Express shows an unnamed but eye-catching impact crater on Mars.


Mars 2020 Rover Progresses Toward Launch

Mars 2020 Rover Progresses Toward Launch

After an extensive review process and passing a major development milestone, NASA is ready to proceed with final design and construction of its next Mars rover, currently targeted to launch in the summer of 2020 and arrive on the Red Planet in February 2021.


Continuous Cold Nights On Mars May Stir Up Dust

Continuous Cold Nights On Mars May Stir Up Dust

Some dusty parts of Mars get as cold at night year-round as the planet's poles do in winter, even regions near the equator in summer, according to new NASA findings based on Mars Reconnaissance Orbiter observations.


Recurring Slope Lineae Inside Valles Marineris on Mars

Recurring Slope Lineae Inside Valles Marineris on Mars

Puzzles persist about possible water at seasonally dark streaks on Martian slopes, according to a new study of thousands of such features in the Red Planet's largest canyon system.


Did A Giant Mars Impact Create Phobos, Deimos - and Another Moon?

Did A Giant Mars Impact Create Phobos, Deimos - and Another Moon?

International collaboration finds that two small satellites (Phobos and Deimos) orbiting Mars can also be formed by a giant impact like the origin of our Moon. The research is reported in Nature Geoscience, July 2016.


Sand-Dune Studies By Curiosity Rover Yield A Surprise

Sand-Dune Studies By Curiosity Rover Yield A Surprise

Some of the wind-sculpted sand ripples on Mars are a type not seen on Earth, and their relationship to the thin Martian atmosphere today provides new clues about the atmosphere's history.


Unexpected Mineral Discovered On Mars

Unexpected Mineral Discovered On Mars

Scientists have discovered an unexpected mineral in a rock sample at Gale Crater on Mars, a finding that may alter our understanding of how the planet evolved.


ExoMars Observes Mars

ExoMars Observes Mars

ExoMars captured its first images of Mars this week as part of its preparations for arriving at the Red Planet in October.


Opportunity Is Ending Marathon Valley Studies

Opportunity Is Ending Marathon Valley Studies

"Marathon Valley," slicing through a large crater's rim on Mars, has provided fruitful research targets for NASA's Opportunity rover since July 2015, but the rover may soon move on.


Curiosity Descends Plateau and Turns Toward Mount Sharp

Curiosity Descends Plateau and Turns Toward Mount Sharp

NASA's Curiosity Mars rover has analyzed its 12th drilled sample of Mars.


Mars Orbiters Reveal Seasonal Dust Storm Pattern

Mars Orbiters Reveal Seasonal Dust Storm Pattern

After decades of research to discern seasonal patterns in Martian dust storms from images showing the dust, but the clearest pattern appears to be captured by measuring the temperature of the Red Planet's atmosphere.



More top stories from August.