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The Winter 2010 issue of The Earth Scientist includes a variety of educational resources, ranging from astronomy to glaciers. Check out the other publications and classroom materials in our online store.

Exploratour: Life on Mars?

This is a Viking image of the surface of Mars. The footpad of the Viking lander is visible in the corner of the image.
Click on image for full size
NASA

Introduction

When we ask "Where might we find extraterrestrial life", the first place many scientists turn to, because of its similarity to the Earth, is Mars. Mars is the closest analog to the Earth in both the present environment and its past. Although no signs of life on Mars have been found, scientists will continue to search because they are aware of the potential for life in extreme environments.

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Mars Rover Landing Sites Selected

NASA has chosen two locations on Mars to explore with its Mars Exploration Rover (MER) missions. The missions are scheduled for launch in May and June of 2003. They will arrive on Mars in January 2004....more

The Search for Life on…Earth!

By studying the small life forms in lakes almost 20,000 feet above sea level in the Andes Mountains of Chile, scientists hope to learn how life may survive in other harsh environments throughout the solar...more

Overview of the Mars Express Mission

The European Space Agency (ESA) launched a mission to Mars called "Mars Express" in June of 2003. The Mars Express spacecraft has two parts: an orbiter that will circle Mars for at least one Martian year...more

Mars Express Landing Site - Isidis Planitia

The European Space Agency (ESA) launched a mission to Mars called "Mars Express" in June of 2003. The Mars Express spacecraft has two parts: an orbiter that will circle Mars for at least one Martian year...more

Isidis Planitia

Isidis Planitia is flat plain within an ancient impact crater on the surface of Mars. Isidis Planitia is about 1500 km (930 miles) across. It is just north of the Martian equator near the center of the...more

MER Spirit landing site - Gusev Crater

The first of two Mars Exploration Rovers (MER) landed within Gusev Crater on Mars on January 3, 2004. The robotic rover, named Spirit, bounced to a halt within an 81 km by 12 km (50 by 7 miles) target...more

Gusev Crater location on Mars

Gusev Crater is an impact crater on Mars that looks as though a lake may have once filled it in the distant past. One of the two Mars Exploration Rovers (MER) will explore Gusev Crater beginning in January...more

Windows to the Universe, a project of the National Earth Science Teachers Association, is sponsored in part by the National Science Foundation and NASA, our Founding Partners (the American Geophysical Union and American Geosciences Institute) as well as through Institutional, Contributing, and Affiliate Partners, individual memberships and generous donors. Thank you for your support! NASA AGU AGI NSF