Graphic Organizer:
Compare refractors and reflectors

In this corner, telescopes with mirrors. In the other, telescopes with lenses. Get ready to rumble!

Tales of … History of Supernova 1987A

Where were you when this star exploded and lit up the sky?

Tales of … A history of the Crab Nebula

A puzzling picture develops as astronomers throughout history try to identify this bizarre object.

Tales of ... Key events in the history of Centaurus A

Follow the hunt for a once-elusive supermassive black hole.

Tales of ... Dust storms seen on Mars

Have an allergy to dust? Avoid Mars. Find out why...