Search found 8 matches

by Rhysy
Fri Mar 27, 2020 11:38 am
Forum: The Asterisk Café: Discuss Anything Astronomy Related
Topic: Interactive Virgo cluster
Replies: 1
Views: 3220

Interactive Virgo cluster

The lockdown has finally given me the time I need / a good excuse to learn how to bring my 3D content online. Here's an interactive model of the Virgo cluster, showing 774 galaxies in 3D. It's a 90 MB page so may take a while to load. It should work fine on mobile devices, but viewing 774 galaxies o...
by Rhysy
Mon Jul 01, 2019 12:46 pm
Forum: The Observation Deck: Latest Sky Photography
Topic: Video Submissions
Replies: 719
Views: 2571984

Re: Video Submissions

A VR flight through the Universe, using real data from the ALFALFA survey and Sloan Digital Sky Survey. 30,086 galaxies all shown using their correct, unique images, with the camera moving at a speed equivalent to 500 trillion times faster than light. You'll need a headset to view this in its full g...
by Rhysy
Tue Jun 04, 2013 2:41 am
Forum: The Asterisk Café: Discuss Anything Astronomy Related
Topic: The QE2
Replies: 66
Views: 6449

Re: The QE2

Well, this one doesn't have any dinosaurs in it at all, but it does have 1998QE2, its moon, and a space station.

http://zoom.it/l3ue
by Rhysy
Sun May 19, 2013 1:29 pm
Forum: The Communications Center: Breaking Science News
Topic: UT: How Big Are Galaxies?
Replies: 9
Views: 2613

Re: UT: How Big Are Galaxies?

The zoomable versions have changed because there was an error in the size of a light year. It isn't 9 billion kilometers (which would be smaller than the solar system !!! :oops: ) it's 9 trillion. I guess removing the offending images breaks zoomit, so here are the new links. http://zoom.it/zQuq htt...
by Rhysy
Sun May 19, 2013 3:16 am
Forum: The Asterisk Café: Discuss Anything Astronomy Related
Topic: What would happen if dark matter disappeared ?
Replies: 8
Views: 2660

Re: What would happen if dark matter disappeared ?

Yes, I am he. :) I don't know why the images should be blocked for "code of conduct" violations... maybe it's because I removed the original images (I don't know how zoomit works exactly, perhaps they require the originals to be accessible ?). Anyway the links in the original blog post do ...
by Rhysy
Fri May 17, 2013 8:37 pm
Forum: The Asterisk Café: Discuss Anything Astronomy Related
Topic: What would happen if dark matter disappeared ?
Replies: 8
Views: 2660

Re: What would happen if dark matter disappeared ?

Thanks ! You're right, it should stay central. I think it's because of small numerical errors which are increased because the program was never designed to have 90% of the mass suddenly removed. Apparently the first run generated 10GB of error messages, which is clearly not a sign of a happy program...
by Rhysy
Thu May 16, 2013 10:29 pm
Forum: The Asterisk Café: Discuss Anything Astronomy Related
Topic: What would happen if dark matter disappeared ?
Replies: 8
Views: 2660

What would happen if dark matter disappeared ?

This may be of interest. It's a simulation a friend ran for me (because I asked nicely) showing what would happen to a run-of-the-mill spiral galaxy if it suddenly and magically lost all of its dark matter. I've always wanted to see this, because I've been telling people for years that without dark ...
by Rhysy
Mon Apr 15, 2013 10:18 pm
Forum: The Observation Deck: Latest Sky Photography
Topic: Video Submissions
Replies: 719
Views: 2571984

Re: Video Submissions

Click to play embedded YouTube video.
Comparing the relative size of galaxies using public domain images. Music is shareable, from http://www.danosongs.com/