April 20, 2015 Jupiter has been a source of wonder since Galileo first pointed his telescope at it on January 7, 1610. Galileo saw only three of Jupiter's four large moons that night but he spotted the fourth the next night. Galileo correctly surmised that they were satellites of Jupiter after watching their motions over several nights though he still referred to them as "stars." Today we refer to them as the Galilean moons of Jupiter.  What would Galileo have thought of the detail we can see on the planet with even modest modern telescopes? You can see Jupiter with...

April 1, 4, 10, 17, & 24, 2015 For GAM2015, we will be running a series of Observing Challenges. Whether you are a complete novice to astronomy or a seasoned veteran there will be something for you! Some of the challenges can be done in a night and some will take the whole month.  If you are a sidewalk astronomer or part of an astronomy club you might like to run events to help people complete the challenges. If are planning an Observing Challenge event, don't forget to register your event ! Share your progress on this challenge with us and the world on ...

April 21 2015, 12:00-18:00 UT For GAM2015, we will be running a series of Observing Challenges. Whether you are a complete novice to astronomy or a seasoned veteran there will be something for you! Some of the challenges can be done in a night and some will take the whole month.  If you are a sidewalk astronomer or part of an astronomy club you might like to run events to help people complete the challenges. If are planning an Observing Challenge event, don't forget to register your event ! Share your progress on this challenge with us and the world on  Facebook , the ...

April 1-30  For GAM2015, we will be running a series of Observing Challenges. Whether you are a complete novice to astronomy or a seasoned veteran there will be something for you! Some of the challenges can be done in a night and some will take the whole month.  If you are a sidewalk astronomer or part of an astronomy club you might like to run events to help people complete the challenges. If are planning an Observing Challenge event, don't forget to register your event ! Share your progress on this challenge with us and the world on  Facebook , the  Flickr group...

April 1-30, 2015 For GAM2015, we will be running a series of Observing Challenges. Whether you are a complete novice to astronomy or a seasoned veteran there will be something for you! Some of the challenges can be done in a night and some will take the whole month.  If you are a sidewalk astronomer or part of an astronomy club you might like to run events to help people complete the challenges. If are planning an Observing Challenge event, don't forget to register your event !