This image shows spiral galaxy NGC 7714, whose tangled shape provides evidence of an encounter with another galaxy.
NGC 7714 resides approximately 100 million light-years from Earth, in the constellation Pisces.
Included is an inquiry-based classroom activity that focuses on the image and text.
In this Hubble Space Telescope image, the tangled shape of the spiral galaxy NGC 7714 provides evidence of an encounter with another galaxy (NGC 7715). Several features indicate a dynamic history. The lithograph text describes the appearance of the galaxy and how it is home to an unusually large number of rare Wolf-Rayet stars. An inset image features both NGC 7714 and NGC 7715. Together, the odd-looking pair of galaxies is called Arp 284, after their catalog number in Halton Arp’s "Atlas of Peculiar Galaxies." Included is an inquiry-based classroom activity.
An initial source of information for student research. Use the inquiry-based classroom activity "In Search of … Interacting Galaxies," which is included with the lithograph, to have students conduct research and create presentations.
An engagement tool in an inquiry-based lesson. Have students study the image of NGC 7714 on the front of the lithograph and the labeled inset image on the back. Ask them to write down as many questions as they can about the images. The students' questions can be used in a variety of ways:
A content reading tool. Have students read the back of the lithograph, and then write a quiz for the class.
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