Shop Windows to the Universe

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 is an artist's picture of the Harvard Observatory placed on the background of a bunch of novae. Novae are the stars that Fleming discovered.
Click on image for full size
Windows to the Universe original image

Williamina Fleming

Williamina Paton Stevens Fleming was a Scottish-American astronomer who lived from 1857-1911. She discovered 10 of the 24 novae then known. Novae are stars that suddenly become very bright then fade over a period of a few months or years. She also discovered over 200 variable stars. Variable stars are those that change in brightness over time.

Shop Windows to the Universe Science Store!

Our online store includes books on science education, ranging from evolution, classroom research, and the need for science and math literacy!

Windows to the Universe Community

News

Opportunities

You might also be interested in:

Science, Evolution, and Creationism

How did life evolve on Earth? The answer to this question can help us understand our past and prepare for our future. Although evolution provides credible and reliable answers, polls show that many people turn away from science, seeking other explanations with which they are more comfortable....more

Exploding Stars

Stars don't last forever. Occasionally, a star bigger than our Sun will end its life in a huge explosion, called a supernova. This explosion happens because the center, or core, of the star heats up very...more

Henrietta Swan Leavitt

Henrietta Swan Leavitt was born in Massachusetts in 1868. She became interested in astronomy in college. Henrietta started working at Harvard's Observatory for 30 cents an hour. Would you like to work...more

Florence Bascom

Florence Bascom, who lived from 1862 until 1945, was one of the most important geologists in the United States. She studied mineral crystals by looking at them very closely with a microscope. She also...more

Niels Bohr

Niels Bohr was a Danish physicist who lived between 1885-1962. He studied the structure of atoms and developed a new theory about how the electrons in an atom were arranged. After helping build the first...more

Marie Curie

Marie Curie was a physicist and chemist who lived between 1867-1934. She studied radioactivity and the effects of x-rays. She was born Maria Skłodowska in Warsaw, Poland. Women could not study then...more

Albert Einstein

Albert Einstein was a German physicist who lived between 1879-1955. He is probably the most well-known scientist in recent history. Have you heard of Einstein's famous theory? It is called the theory...more

Robert Goddard

Robert Goddard was an American physicist who lived between 1882-1945. He studied rockets and showed how they could be used to travel into outer space and to the Moon. Goddard experimented with different...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