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Universe in the Classroom

Welcome to the Universe in the Classroom! This electronic educational newsletter is for teachers and other educators around the world who want to help students of all ages learn more about the wonders of the universe through astronomy.

You can read the current issue, subscribe to receive updates and browse our archives. You can also learn more about the Universe in the Classroom and find out about how you can help by writing an article, translating the newsletter or making a donation.

Current Issue: Spring 2014

The Universe: the 2014 Model
Part 2. Cosmological Puzzles (and Ways to Resolve Them)

by Bruce Partridge (Haverford College)

In the past few decades, we have made huge strides in understanding what the Universe is like, and how it evolved. In fact, this is a vast understatement! Fifty years ago, we knew the Universe was expanding, and had a rough idea of its age, somewhere between 7 and 20 billion years. There was a lively debate on whether the expansion was slowing down or not. There were hints—which most astronomers ignored—that some kind of matter was present in the Universe other than stars and galaxies. Very little else was agreed on, and a prominent physicist dismissed cosmology, the study of the properties and history of the Universe, as “a dream of zealots.”

In this edition of Universe in the Classroom, learn about how our understanding of cosmology has evolved as our ability to collect and interpret data has improved.

We thank the following Universe in the Classroom sponsors

Donat G. Wentzel

The Thomason Foundation

Al Whaley

Support this program.