Custom Classroom Resources will not
be available after August 1st, 2008.
If you would like to access resources you have
created for future use, you will need to save them
to your local computer.
Ursa Major
Throughout the month, Ursa Major, the Great Bear, will be visible in the north. The bears tailalso known as the handle of the Big Dipperwill point upward. Use the two stars at the end of the cup of the Big Dipper as pointer stars. They will point toward the horizon to Polaris, which is in the handle of the Little Dipper. Note how the handles of the Big Dipper and Little Dipper point in opposite directions. As the summer goes on, watch the Big Dipper spin around the Little Dipper. Polaris stays put as the other stars circle around it. Thats because it is located above the North Pole. If you look back at the Big Dipper and find the second star from the end on the tail (Mizar), you can take a little eyesight test: See if you can spot two separate stars there. Then use a telescope or binoculars to get an even better view.
The Perseid meteor shower will occur around August 15. A good meteor shower can show off tens or hundreds of meteors per hour. Sometimes called shooting stars, meteors are actually little pebbles and grain-sized rocks that fall into our atmosphere and give off a flash of light as they burn up. These are the debris left behind by comets whose paths intersect Earths orbit. Meteor showers are named for the constellation from which they first appeared to originate, and this one seems to come from the general direction of Perseus. While meteor showers occur only a few times each year, it is estimated that meteors are formed at a rate of about 25 million per day!