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Young Voices for the Planet DVD in our online store includes 8 films where students speak out and take action on climate change.

Comet Hale-Bopp


Comet Hale-Bopp Continues to Surprise Scientists

Comet Hale-Bopp Update

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Traveling Nitrogen Classroom Activity Kit

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

Comet Hale-Bopp continues to surprise scientists

Hale-Bopp continues to offer new surprises as two astronomers report on their study of the comet. They found that there are different kinds of ices in the comet's center, the center is huge and is really...more

Comet Hale-Bopp update

Comet Hale-Bopp is expected to give a really cool show to the world as it brightens the skies this month. According the European Space Observatory, Hale-Bopp is set to be one of the brightest comets....more

Comet Hale-Bopp

Comet Hale-Bopp was one of the brightest comets of all time. Astronomers witnessed the comet spew out intermittent bursts of dust. The surface seemed to be an incredibly dynamic place, with 'vents' being...more

Missions to Halley's comet in 1986

Six spacecraft flew to Halley's comet in 1986. There were two spacecraft launched from Japan, named Suisei and Sakigake, and two from the Soviet Union, named Vega 1 & 2. One spacecraft, ICE, was from the...more

The Jupiter family of comets

Astronomers have noticed a group of comets which they call the Jupiter Family of Comets. This family of comets is to be found circling between Jupiter and the sun, as shown in this picture. The comets...more

What we learned from Comet Shoemaker-Levy 9

Scientists have learned a great deal from the crash of comet Shoemaker-Levy 9. Scientists traced the orbit of the comet backwards in time to guess its origin. The crash of a comet like Shoemaker-Levy 9...more

The trajectory of Comet Shoemaker-Levy 9 over time

Mathematical theory suggests that comet Shoemaker-Levy 9 was likely a short-period comet which was captured into orbit around Jupiter in 1929. This orbit ended with a collision of the comet with Jupiter...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