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We now offer the Cool It! card game in our Science Store. Cool It! is the new card game from UCS that teaches kids about the choices we have when it comes to climate change.
This image shows the rock called "Souffle".
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Image from: NASA/JPL

Martian Surface Winds

On Mars the surface winds accelerate to higher speeds than those on Earth. These winds can be whipped to an extreme during the frequent Martian global dust storms. The first weather measurements made from the surface of Mars were performed by the Mars Pathfinder mission. These measurements provided some real data about the strength of Martian winds.

Sand grains from the surface are picked up by the winds and accelerated to high speeds. This leads to a gouging and chipping effect which contributes toward sand erosion of the surface by wind. The rocks found by the Mars Pathfinder lander provided plenty of evidence for sand erosion by wind. Winds are very important to the erosion of Martian rock, and makes the process a little different than on Earth.


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Weather found by Mars Pathfinder

This is the first image showing clouds of Mars taken from the lander. Scientists know that the clouds are made of water. And there are weather patterns on Mars which resemble terrestrial storms. It is...more

Martian Weathering by Wind and Sand

Sand is lifted and carried into the air by winds. The general process by which this occurs is called "saltation". Saltation becomes very powerful during the frequent Martian global dust storms. The rock...more

Weathering processes on Mars

Unlike the rocks of Earth, where there are many things which cause erosion, the rocks of Mars erode because of only two things: wind and acid fog. Acid fog is very important, but because there is not a...more

Mars' Thin Atmosphere

This is image of a Martian sunset illustrates just how thin the Martian atmosphere is. In this image, the Martian sky appears pink and a little bit dark at sunset. Unlike the Martian sky, the Earth's sky...more

Martian Surface Winds

On Mars the surface winds accelerate to higher speeds than those on Earth. These winds can be whipped to an extreme during the frequent Martian global dust storms. The first weather measurements made from...more

Discovery of Mars

Mars is a bright, red object in the sky. It is very easy to see, which means that even people that lived long ago knew it was there. So, we don't know who discovered it. We do know it was named after...more

Mars 2003

The Mars 2003 mission includes a lander and a rover. The mission will start sometime in May or June, 2003. The lander will carry the rover, and it will use rockets to help it land on the surface. The...more

The Mars '98 Landing Site

The Mars '98 lander was suppose to land near the south pole of Mars. This picture of the south pole was taken by the Mars Global Surveyor mission. Unfortunately, contact with the Mars '98 lander was lost,...more

Windows to the Universe, a project of the National Earth Science Teachers Association, is sponsored in part is sponsored in part through grants from federal agencies (NASA and NOAA), and partnerships with affiliated organizations, including the American Geophysical Union, the Howard Hughes Medical Institute, the Earth System Information Partnership, the American Meteorological Society, the National Center for Science Education, and TERC. The American Geophysical Union and the American Geosciences Institute are Windows to the Universe Founding Partners. NESTA welcomes new Institutional Affiliates in support of our ongoing programs, as well as collaborations on new projects. Contact NESTA for more information. NASA ESIP NCSE HHMI AGU AGI AMS NOAA