This lithograph features a Hubble image of the galaxy cluster Abell 2744, which exhibits a special feature known as gravitational lensing. The backside includes a description of the image and its features. Students use the image and the information... (View More) provided to generate related questions, then conduct research to find the answers. Lesson details, including suggested research websites, are provided. (View Less)

This is a two-page lithograph featuring the Cepheid Variable Star RS Puppis, an example of a special class of bright pulsating stars whose light and energy outputs vary over a set period of time. The text on the lithograph explains the historic... (View More) importance of Cepheid variable stars as distance markers. The accompanying classroom activity In Search of … Cepheid Variable Stars is a curriculum support tool designed for use as an introductory inquiry activity. During the classroom activity, students use the images and text on this lithograph to generate questions about Cepheid variable stars. They will conduct research to answer their questions and will create a presentation to demonstrate their understanding of the material, providing supporting evidence from their research. (View Less)

This image from the Hubble Space Telescope reveals a panorama of turbulent star birth, located close enough to Earth that Hubble can resolve individual stars. The star factory resides 170,000 light-years away in the Large Magellanic Cloud, a small... (View More) satellite galaxy of our Milky Way. Included are suggestions for using this in the classroom and an introductory activity in which students use the images and text on this lithograph to generate questions, and research answers, about star formation. (View Less)