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Learn about planets outside our solar system through Exoplanets and Alien Solar Systems by Tahir Yaqoob, Ph.D., a book in our online store book collection.

Maria Winkelmann Kirch

Maria Winkelmann Kirch was a German astronomer who lived between 1670-1720. She discovered the comet of 1702. She also published a paper in 1712 on the conjunction of Jupiter and Saturn.

Maria worked with her husband, Gottfried Kirch in making calendars and ephemerides (tables showing positions of the planets, Sun, and Moon).


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Our online store includes fun classroom activities for you and your students. Issues of NESTA's quarterly journal, The Earth Scientist are also full of classroom activities on different topics in Earth and space science!

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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

Comets

Not long ago, many people thought that comets were a portent that something bad was about to happen to them. Since people did not yet understand about the objects in the solar system and how they moved,...more

The Earth's Moon

The Earth's one natural satellite, the Moon, is more than one quarter the size of Earth itself (3,474 km diameter), making the Earth-Moon system virtually a double-planet. Because of its smaller size,...more

Charles Darwin

Charles Darwin was an English Naturalist who lived between 1809-1882. In 1859, with the publication of The Origin of Species by Means of Natural Selection, he challenged existing views on the appearance...more

Christian Doppler

Christian Doppler was an Austrian mathematician who lived between 1803-1853. He is known for the principle he first proposed in Concerning the coloured light of double stars in 1842. This principle is...more

Ben Franklin

Ben Franklin was an American scientist and statesman who lived between 1706-1790. At a time when little was known about electricity, he carried out many experiments to learn of its dangers and possible...more

Edmond Halley

Edmond Halley was an English astronomer who lived between 1656-1742. Using historical records, his own observations, and Newton's universal law of gravitation, he reasoned that the comets which had appeared...more

William Herschel

William Herschel was born in Germany and lived in England while he worked as an astronomer. He lived between 1738-1822. He built reflecting telescopes of high magnification, that let him observe the universe...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