Tag Archive for 'Mars Global Surveyor'

A topographic map of the Eridania region of Mars; volcanic structures described by Michalski et al. are classified by morphology and morphometrics. Image credit: Michalski et al., doi: 10.1038/s41550-023-02191-7.

Early Mars was Tectonically and Volcanically Active, Study Suggests

Feb 12, 2024 by News Staff

The relatively well-preserved ancient crust of Mars provides a natural window into early planetary evolution not available on Earth. Mars has generally...

The map of Tharsis region of Mars from the Pocket Atlas of Mars 36. Image credit: NASA / JPL / GSFC / ESA / DLR / FU / H. Hargitai.

Planetary Scientists Create Pocket Atlas of Mars

Mar 17, 2021 by News Staff

The 84-page atlas of Mars, currently available in English, Hungarian and Czech, was developed as a part of a public outreach project supported by the Europlanet...

A view of Mars showing the planet’s northern polar ice cap. Image credit: ISRO / ISSDC / Emily Lakdawalla.

Ice Sheets Covered Southern Highlands of Early Mars

Aug 3, 2020 by News Staff

The southern highlands of Mars are dissected by hundreds of ancient valley networks (3.9-3.5 billion years old), which are evidence that water once sculpted...

Martian moon Phobos. Image credit: NASA / JPL-Caltech / University of Arizona.

Phobos May Have Come from Massive Impact on Mars

Sep 26, 2018 by News Staff

The Martian moons Phobos and Deimos have been suggested to be captured asteroids based on the similarities between the dark, red, nearly featureless spectra...

Aeolis Dorsa, Mars: the dotted white arrow points to curved strata recording point bar growth and river migration; the boundaries of ancient valley walls are defined by textural and albedo changes and are also associated with lateral river migration; stacked above the point bars and completely confined within the dotted white and black lines are topographically inverted river deposits outcropping as ridges (e.g., black arrow); in places (e.g., south of the dotted white arrow), the ridges run against the dotted boundaries, suggesting flow was once redirected along a valley wall. Image credit: Cardenas et al, doi: 10.1130/B31567.1.

Planetary Researchers Find More Evidence of Water on Early Mars

Sep 19, 2017 by Enrico de Lazaro

River deposits exist across the Martian surface. A large sedimentary basin named Aeolis Dorsa contains some of the planet’s most spectacular and densely...

Valleys younger than better-known ancient valley networks on Mars are evident on the landscape in the northern Arabia Terra region, particularly in the area mapped here with color-coded topographical information overlaid onto a photo mosaic. The area includes a basin informally named ‘Heart Lake’ at upper left. Data from NASA’s Mars Global Surveyor orbiter are coded here as white and purple for lower elevations, yellow for higher elevation. The elevation information is combined with a mosaic of images from NASA’s Mars Odyssey orbiter, covering an area about 120 miles (about 190 km) wide. The mapped area is centered near 35.91 degrees north latitude, 1 degree east longitude on Mars. Image credit: NASA / JPL-Caltech / ASU.

Mars Had Lakes, Snowmelt-Fed Streams More Recently than Thought

Sep 16, 2016 by News Staff

ESA’s Mars Express, NASA’s Mars Reconnaissance Orbiter and Mars Global Surveyor have sent back new images and data from the Red Planet that indicate...

This view of the Martian gravity map shows the Tharsis volcanoes and surrounding flexure: the white areas in the center are higher-gravity regions produced by the massive Tharsis volcanoes, and the surrounding blue areas are lower-gravity regions that may be cracks in the crust. Image credit: MIT / UMBC-CRESST / GSFC.

NASA Scientists Release Map of Mars’ Gravity

Mar 22, 2016 by News Staff

A team of researchers led by Dr. Antonio Genova of NASA’s Goddard Space Flight Center has released a detailed new map of Mars’ gravity. This view of...