ESOcast 81: Red Sprites

As night falls, telescopes at ESO's observatories are just starting the night’s observations. But all of a sudden a strange phenomenon appears in the distance. What could this be? Let’s take a closer look!

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ESOcast is a video podcast series dedicated to bringing you the latest news and research from ESO – Astronomy made on planet Earth. Here we explore the Universe's ultimate frontier with our host Doctor J, a.k.a. Dr. Joe Liske.

The ESOcast is offered for download in several formats: standard (.mov, .mpeg, .mp4, .m4v) and HD (High Definition). HD is rapidly evolving into one of the leading video formats in the video on-demand market. Information on the specs of the available video formats is accessible on the Video Formats Page.

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Who is Dr. J?


Dr. J is a German astronomer. His scientific interests are in cosmology, particularly on galaxy evolution and quasars. Dr. J's real name is Joe Liske and he has a PhD in astronomy.