Shop Windows to the Universe

Become a nitrogen atom in the nitrogen cycle in our Traveling Nitrogen Classroom Activity Kit/Game. See all our games, activity kits and classroom activities.

Spherical Analyzer

Play around with changing the numbers in the Analyzer inputs below and clicking "Run" until the particle travels all the way through without hitting either side. Click "Clear" if you want to erase the paths of past attempts.
Voltage (0-2000): Mass (amu): Ion Charge (e):
Start Pos (-2.5-2.5 mm): Velocity (km/sec):
SWICS Instrumentation Page

ACE Instrumentation Page

Shop Windows to the Universe Science Store!

Our online store includes issues of NESTA's quarterly journal, The Earth Scientist, full of classroom activities on different topics in Earth and space science, ranging from seismology, rocks and minerals, oceanography, and Earth system science to astronomy!

Windows to the Universe Community



You might also be interested in:

SWICS Instrument Page

The SWICS (Solar Wind Ion Composition Spectrometer) instrument on Ulysses is to measure the frequency of occurence, temperature and average speed of all the major solar wind ions, from Hydrogen through...more

ACE Instrumentation Page

The ACE spacecraft consists of a two-deck irregular octagon, about 1.6 meters (65 inches) across and about 1 meter (40 inches) high. Eight of the scientific instruments which measure a variety of particle...more

Images & Multimedia

Here you will find links to all sorts of pictures, animations, videos, sounds, and interactive multimedia that are on Windows to the Universe Explore collections of images in the Image Galleries. Watch...more

Setting up a Sponsorship to Windows to the Universe

Becoming a sponsor of the Windows to the Universe project is easy! Please decide what you would like to contribute to the project (all contributions are tax deductible), fill out our Sponsorship Form and...more

Donations to Windows to the Universe

Is Windows to the Universe a valuable resource for you? If so, we encourage you to help support this project through a donation, by joining Windows to the Universe as a Member, or through your purchases...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