The Classroom Astronomer Newsletter-Inbox Magazine

ON HIATUS, Not accepting new subscribers at this time. TCA, The Classroom Astronomer Newsletter/Inbox Magazine, is a successor to the 2009-2015 magazine of the same name. It covers topics in astronomy education of all levels, for K-12, college, home schoolers, and the pandemic virtual teacher, whether parent or professional. There are articles, reviews, tips from professional journals you can use now instead of waiting for the years it takes to filter down to the everyday teaching corps, ‘teachniques’ from our own experience, things you can do and use with upcoming sky events, and far more than can be listed.

TCA is a premium newsletter, what we call an Inbox Magazine, requiring a monthly or annual fee as of the September 15th, 2021 issue. Rates are generally around 1-2.50 per issue equivalence. Free subscribers receive one regular free TCA, normally with the Sky Lessons, K-12 or general outreach or public astronomy Connections resources or Astronomical Teachniques articles. FULL premium subscribers receive this issue plus issues with conference highlights (AAS, IAU, planetarium, general astronomy meetings, and others), RAP Sheet summaries of articles in over 30 scholarly journals we monitor, and college and museum/planetarium-venue Teachnique and other stories. It pays to go premium!

Why subscribe?

There are lots of astronomy resources on the web and in print, often free, but few resources that reach the teacher on education in astronomy, on the how of teaching, the pedagogical knowledge. Subscribe to get full access to the all the newsletter issues and all its articles, its archive, and never miss an update.

Stay up-to-date

You won’t have to worry about missing anything. Every new edition of the newsletter goes directly to your inbox, on your phone, your tablet, your home or school computer, all the places you get your email.

Additionally, and for free, TCA’s homepage, at, has a complete list of all Issue Tables of Contents and an Index by Topic (Teaching a particular Celestial Object, Educational Topic such as Assessment, and Cultural Connection such as Astronomy and Society). There is also a growing list of resources, from the newsletter and the original Classroom Astronomer magazine, linked to this homepage, including a collections of newsletter articles, such as the TCA List of Model Solar Systems around the world.

Welcome to our Universe!

Subscribe to The Classroom Astronomer Newsletter

The Classroom Astronomer Newsletter (TCA) [Inbox Magazine] is on astronomy education, for the general public, K-12, university. Currently on a hiatus and a private publication for now.


Dr. Larry Krumenaker

Astronomer, educator, and longtime science and astronomy writer, Dr. Krumenaker has worked as a journalist and educator in the USA, Germany and Korea, given workshops additionally in Italy, Russia, England, France, Canada, and Mexico.