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By Astronomy Cast on September 2, 2019 in

This week we wonder if the Universe is going to collapse and then expand again, how satellites can have such different velocities, and the size of the observable Universe.

By Brian Gray on April 23, 2009 in

Date: April 23, 2009 Title: It’s a Smash Up – Interacting Galaxies Podcaster: Brian Gray Organization: Wilderness Center Astronomy Club: Description: The Universe has grand spirals and unassuming ellipticals. But the universe also has train wrecks that attract the gaze of many astronomers. Distorted shapes and vigorous star formation illustrate the power of tidal […]