This site gives an extensive discussion of Aristarchus' accomplishments in determining the size of the sun and moon and in proposing a sun-centered universe.

Looks at the history of Greek astronomy from the 4th century BC on, and the major figures who contributed ideas. Includes a timeline of Greek science.

Explore this list of close to fifty science careers with a connection and focus on environmental science. Also compare average salaries of each.

Biography of Anders Jonas Angstrom (1814-1874), a Swedish physicist who pioneered the field of spectroscopy. He was also well known for his work in mathematics and astronomy.

This site, which is provided for by the University of St. Andrews, gives a brief biography of Christopher Clavius with references for additional study.

This site from Cornell University provides a discussion of how Aristarchus arrived at his conclusions of the distance from the Earth to the Sun and Moon. Also has his methods for determining the size of the Moon and the Sun.

Part of the PBS website, an article documenting the life and work of Edwin Hubble.

This is biographical information, uuotes, a bibliography and links to other resources on the popular American physicist Carl Sagan.

This biography of Caroline Herschel (1750-1848 CE), a female mathematician and astronomer provides information on her upbringing and her road to fame.

This site from ScienceWorld contains a short but factual biographical sketch of the life of the American astronomer, Edwin Hubble. Links are provided throughout for additional information on related subjects.

This space telescope image features a full-blown Gamma-Ray Burst first detected by a team of astronomers led by Peter Garnavich. In addition, a detailed textual overview explains various specifics of the picture.

This image, titled "Crab Nebula Supernova Remnant" features the Crab Nebula which was noted in the constellation of Taurus by Chinese astronomers. The text under the image details various specifics about the picture.

Astronomers have determined how super-bright galaxies can be used to detect the faint glow of "cosmic fog." Cosmic light is light that has left every star and now lingers in the universe, including light from stars that have burned out.

Brief biography of the Greek astronomer Hipparchus of Rhodes. Also contains one illustration and a couple of reference links.

Probably one of the coolest things to imagine is life on another planet! What would it look like? What could it possibly be? Scientists have discovered a planet much like Earth. "I would say that the chances for life on this planet are...

While astronomers and philosophers have long mused on the possibility of other solar systems, the first planets confirmed to orbit a star other than our Sun weren't found until 1992. The reason it took so long is that it's really hard!...

Read about the mathematician and astronomer Galileo Galilei.

Kids learn about astronomy, the study of outer space including the stars, planets, comets, black holes, and the Solar System. History and astronomers in this astronomy for teachers and kids section.

What makes up the Solar System? Kid astronomers learn about the planets and the sun.

[Free Registration/Login Required] This flipchart explains the significance of Delta Cephei in the constellation Cepheus and its historical significance in determining distances in space. It discusses parallax, standard candles, and the...

Use this site to learn about the Apollo 11 spaceflight at this NASA-sponsored site designed for young astronomers. Nice one-paragraph summary of the mission, with links to additional information about the astronauts, the lunar module,...

This site, written by an amateur astronomer with 30 years of study and interest, explains the equinox with photos and charts.

This is a detailed biography of the father of modern rocketry, Robert Goddard. It explains how he lived growing up and how be became so interested in space science.

This chronicles Galileo's trial for supporting and proving the Copernican view of the solar system. A chronology, biographical information on key figures and pertinent historical documents are available.