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Gravity is the weakest of the four fundamental forces, it causes causes mutual attraction between all things with mass or energy. It is  approximat...

 The European Space Agency’s Exobiology on Mars (ExoMars) program has included a series of missions designed to study the potential for...

We’ve all heard the story – Isaac Newton sat in his garden under an apple tree, looking up at the waning gibbous Moon in the early morning sky. An ...

Legend has it that a young Galileo observed the swinging of a censer (incense holder) in church one day and noted that the incense burners kept swi...

“How powerful is that telescope?” is more often than not the first thing out of a person’s mouth when they see a large telescope. To the uniniti...

It is said that familiarity breeds contempt, and this certainly is true of the Moon. Many astronomers despise the Moon as a bright lamp that ...

This activity is larger, messier, and a lot more fun that the clay model we made in Episode #4. In the last activity, we pressed various s...

Signed by the Author for Delivery at the Arizona Dark Sky Star Party The autobiography of Mike Weasner describes his journey through the Universe t...

For *participants of the 2022 Mount Wilson Observatory Star Party and The Huntington Library, there is an Estate Group Tour option for a 90-minut...