astro

Category archives for astro

In 2011 Daniel Holz gave a Heinz R. Pagels Public Lecture at the Aspen Center for Physics on the topic of Gravitational Waves. The talk is one of the better explanations of what this is all about, with a bonus introduction!

LIGO: Useful Things

LIGO and allies have also provided a bunch of fun useful stuff: Have We Detected Gravitational Waves Yet? Stretch and Squash Black Hole Hunter Einstein@Home Gravitational Waves 101 – Markus Pössel’s excellent visualizations. The Data The Papers SXS – Simulating eXtreme Spacetimes visualizations The Chirp – courtesy of Georgia Tech GR group

LIGO explains

February 11th was a good day. I spent the day at the “Dynamics and accretion at the Galactic Center” Conference at the Aspen Center for Physics, where about 75 physicists have spent the week talking about black holes and stuff. This morning we watched the LIGO press conference, frantically deciphered the papers, and had a…

A New Kepler Orrery

Ethan Kruse has update the Kepler Orrery, just in time for Extreme Solar Systems III now under way. Enjoy

The Dance of Neptune

The Kepler 2 mission serendipitously observed Neptune about a year ago. The images were posted on the K2 website, but according to the website stat like nobody shared them, which sucks. The animation was just shown at the Division for Planetary Sciences meeting, #DPS15, in DC so it is time to show it again. Enjoy.…

As of this morning we have discovered over 1,500 exoplanets, planets orbiting stars other than the Sun. In addition to the confirmed discoveries, we have over 3,000 candidate exoplanets, most discovered by the NASA Kepler Mission through transits, where we see the shadow of a planet as it crosses in front of its parent star.…

ZUG HM HM HM

Well, that took longer than expected. Anyone still out there? Lots to talk about, eh?

Useful Things

Because I must trim browser tabs, here is a current short list of things that might be useful: Threebody – online implementation of the open source IAS15 integrator – a 15th order high precision N-body integrator – ASCL – Astrophysics Source Code Library – Open Source Code Visible Spectra of the Elements – Except Astatine…

Astrophotography

Astrophotography is the title of a gorgeous and very useful new book by Thierry Legault I had to taper off doing book reviews, much to the annoyance of all those lovely people who persist in sending me just the sort of books that I actually really love to read – it just got too time…

Day two of the New Frontiers wrap-up conference. This is a slow liveblog with more cosmology and life in the universe. Yesterday’s summary is here A couple of years ago, the Templeton Foundation funded the New Frontiers program to pose “Big Questions” in some areas of science. This is a slow liveblog – part II…