This image from the Hubble Space Telescope shows a rare view of a pair of overlapping galaxies, called NGC 3314.
The chance alignment of the two galaxies, as seen from Earth, gives a unique look at the silhouetted spiral arms in the closer face-on spiral, NGC 3314A.
Included is an inquiry-based classroom activity that focuses on the image and text.
This image from the Hubble Space Telescope shows a rare view of a pair of overlapping galaxies, called NGC 3314. The two galaxies look as if they are colliding, but they are actually separated by millions of light-years. The motion of the two galaxies indicates that they are both relatively undisturbed and that they are moving in markedly different directions. An inquiry-based classroom activity is included in the lithograph package.
Teachers can use this lithograph as:
An example of overlapping galaxies. Use the inquiry-based classroom activity, "In Search of … Nature's Deception: Overlapping Galaxies," which is included with the PDF lithograph.
An engagement tool in an inquiry-based lesson. Have students study the images on the lithograph. Ask them to write down as many questions as possible about the features visible in the images. The students' questions can be used in a variety of ways. Here are a few suggestions:
A content reading tool. Have students read the back of the lithograph and write a quiz for the class.
HubbleSite press release: "Chance Alignment Between Galaxies Mimics a Cosmic Collision"
HubbleSite: Press Releases on Interacting Galaxies
Amazing Space resources by topic: Galaxies