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Our Glaciers: Then and Now activity kit helps you see the changes taking place in glaciers around the world. See all our activity kits and classroom activities.
MESSENGER will give us much better images of Mercury than this one!
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Courtesy of NASA

MESSENGER

Do you know what MESSENGER stands for? It's the MErcury Surface Space ENvironment, GEochemistry Ranging mission! What does this mean? Well, the spacecraft will study Mercury's atmosphere, crust and polar caps.

MESSENGER is just getting started-- it won't be launched until 2004. The probe will start orbiting Mercury in 2009. The last time a probe went to Mercury was in 1975, and that was Mariner 10!

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Learn about Earth and space science, and have fun while doing it! The games section of our online store includes a climate change card game and the Traveling Nitrogen game!

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Traveling Nitrogen Classroom Activity Kit

Check out our online store - minerals, fossils, books, activities, jewelry, and household items!...more

Atmosphere of Mercury

Mercury has almost no atmosphere. The planet's small size means that its gravity is too weak to hold down a normal atmosphere. There is a very thin atmosphere around the planet. Mercury's thin atmosphere...more

Cassini

Cassini is the name of a robot spacecraft. Cassini is studying the planet Saturn. It is also studying many of Saturn's moons and Saturn's cool rings. Cassini blasted off from Earth in 1997. It took Cassini...more

MESSENGER

Do you know what MESSENGER stands for? It's the MErcury Surface Space ENvironment, GEochemistry Ranging mission! What does this mean? Well, the spacecraft will study Mercury's atmosphere, crust and polar...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