Starship Asterisk*

Hello,
I need to play this mp4 for my astronomy class, but it won't play, I can play it in my browser, but i cannot play the mp4, any idea why? I am using realplayer.

Thanks you with this form I More love galaxy in the universe

I am a real admirer of the cosmos, and enjoy the lectures. Would also like to continue getting them, to learn more about this magnificent Universe in which we live, that tells me so much about his omnipotent Creator. :roll:

The lecture video is embedded below but also available [url=http://asterisk.apod.com/lectures/Lecture19.mp4]here in MP4 format[/url].
Additionally, slides used in the lecture are embedded below but also are available [url=http://asterisk.apod.com/lectures/Lecture19.ppt]here in Powerpoint format[/url].
Questions after the lecture? Please ask them in [url=http://asterisk.apod.com/viewforum.php?f=27]here[/url].

[youtube]http://www.youtube.com/watch?v=mSSTGMyG6ho[/youtube]
Wikipedia entries:
[list][url=http://en.wikipedia.org/wiki/Galaxy]Galaxy[/url]
[url=http://en.wikipedia.org/wiki/Quasar]Quasar[/url]
[url=http://en.wikipedia.org/wiki/Galaxy_groups_and_clusters]Galaxy groups and clusters[/url][/list]

[clear][/clear]

[flash=432,346]http://asterisk.apod.com/lectures/Lecture19.swf[/flash]