This Hubble Space Telescope image shows a dark lane of dust thought to be the remains of a smaller spiral galaxy that collided with the larger elliptical galaxy millions of years ago. Astronomers believe the galaxy also hosts a supermassive black hole that is feeding on the fresh remains of the smaller spiral galaxy.
Background information and another image provide details about the black hole and the star birth triggered by the collision.
This image from the Hubble Space Telescope shows a dark lane of dust, believed to be the remains of a smaller spiral galaxy that collided with the larger elliptical galaxy millions of years ago. Astronomers believe Centaurus A hosts a supermassive black hole that is feeding on the fresh remains of the smaller spiral galaxy. Background information and another image provide details about the black hole and the star birth triggered by the collision.
Teachers can use this lithograph as:
An engagement tool in an inquiry-based lesson. Have students study the image side of the lithograph. Ask them to write down any questions they have about the image. When the students are finished, their 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.
A component in a history of science activity. Students can use "Lithograph: Galaxy Centaurus A" along with "Tales of … Key events in the history of Centaurus A" to look at how our view of the galaxy changed as our technology improved. After reading the lithograph and the article, have students list the changes in technology that led astronomers to conclude that a supermassive black hole is in the center of Centaurus A.
Tales of ... Key events in the History of Centaurus A
HubbleSite press release: "Hubble Provides Multiple Views of How to Feed a Black Hole"
Amazing Space resources by topic: Galaxies
Amazing Space resources by topic: Black holes