Earthquake in Tonga
Tsunami warnings for Fiji and New Zealand.
Prelimiinary magnitude estimate is 8.1 on the Richter scale.
UPDATE: USGS summary
Speculations on astronomy, astrophysics, news I find interesting,
theoretical issues, science and science policy.
In particular: gravitational radiation sources, black holes, planets and astrobiology.
I will digress into computational physics, science fiction and general issues and basically whatever I feel like whenever.
And, of course, cats.
Steinn Sigurðsson is an astrophysicist at Penn State.