Like ordinary matter, dark matter interacts gravitationally with ordinary matter and radiation. Astronomers study the distribution of dark matter through observing its gravitational effects on ordinary matter in its vicinity and through its gravitational lensing effects on background radiation. The background image shows the bullet cluster, a famous example where the visible matter does not follow the mass distribution.
Combining all the available evidence, dark matter represents about 83% of the matter content of the universe. Read more about dark matter on this web page. Let us know your questions and comments on the message board.
\"Wer die Freiheit aufgibt, um Sicherheit zu gewinnen, wird am Ende beides verlieren.\" Benjamin Franklin
Recent outage explanation
Over the last week we suffered a database corruption due to some disk errors. I've spent the last several days recovering the database from backups and from the corrupted files. Unfortunately, records of workunits from the last several weeks were lost, which means you will not receive credit for any of these jobs. I greatly apologize for this, and we've taken steps to make sure this doesn't happen again. The good news is that this was the only thing which could not be recovered, everything else is fine.
We're continuing to monitor things as the server comes back online, please report any problems you may find here.
11 Sep 2018, 13:40:40 UTC · Discuss
All tasks functioning normally
The problem affecting the camb_legacy tasks has been resolved. The server also recently received some under-the-hood upgrades which should improve performance and security.
10 Aug 2018, 2:47:15 UTC · Discuss
camb_legacy tasks temporarily suspended
Hi everyone, there's something wrong with the camb_legacy tasks, possibly related to a recent upgrade. I've temporarily disabled them (no validation, no new workunits created) until I can figure out the problem. The camb_boinc2docker application is still working normally.
25 Jun 2018, 15:53:23 UTC · Discuss
Hi folks, I've made a few tweaks to the website theme. Hopefully this makes it a bit easier on the eye. These changes should also improve usability on mobile somewhat, although some work remains to be done. For now, please report any theme / user interface bugs you may find on this thread! Thanks!
29 May 2018, 23:18:51 UTC · Discuss
Scheduled downtime over
The power is back and so are we. Happy crunching!
15 Dec 2017, 13:55:46 UTC · Discuss
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