A few weeks ago, fellow moderator Jonathan suggested that I "live-post" from a conference, so I'll do so this week. He was actually thinking about another...

The concluding talk on open problems in cosmology was given by Joe Silk. I'll mention below a few things I found particularly interesting. Although the...

'Oumuamua has a rotation period of 8.1 hours, similar to Kuiper Belt objects implying a common origin in the vast depths of interstellar/intergalactic...

In the 1960ies and 70ies the theory of Kant, Laplace, von Weizsäcker of the formation of the Solar system out of a gas disk surrounding the protostellarad...

At the 220th Meeting of the AAS in Anchorage, 10-14 June, Helmut A. Abt will give an oral presentation on whether exoplanet systems typically form in the...

When discussing Friedmann models, the usual approach is to start with the Friedmann equation then express dr/dt as a function of R, Omega, lambda, and so on,...

http://www.eso.org/outreach/press-rel/pr-2007/pr-23-07.html quote Using ESO's VLT, astronomers recently measured the age of a star located in our Galaxy....

Be sure to take a look at this very nice example of discrete stellar/ atomic...

Sorry if this is a bit on the frivolous side for this group, but it's something I've wanted to accomplish for years. When the sun is at just the right...

] Joseph Lazio wrote in message ... You're mixing up two different measurements. ...

Over the years I have heard astronomers repeatedly say two things to the public so many times that they have become common knowledge. My studies have led me...

"TS" == Thomas Smid writes: TS Joseph Lazio wrote in message TS...

Bob Nelson wrote Is Guth now entitled to a Nobel prize for his work (in spite of his unseemly lobbying). I think it would...

Accordingly to Wikipedia http://en.wikipedia.org/wiki/Age_of_the_universe#Cosmological_parameters the Hubble time is defined as: " So a ROUGH estimate of the...

The paper http://adsabs.harvard.edu/abs/1965SvA.....8..854D @ARTICLE { VDashevskiiYZeldovich65a , AUTHOR = "V. M. Dashevskii and...

Phillip Helbig wrote: "Dark energy" is a newfangled name for the cosmological constant. As Sean Carroll points out, a better name would be "smooth tension". ...

NASA publishes the discovery of a galaxy cluster at 12.6 billion...

They meet in Mars exploration. Since quite a time, humans are roving the planet, "looking for life". Sadly, I think that this is not the case. Biology has...

Not much work seems to be done nowadays on open (aka hyperbolic) or closed (aka spherical) manifolds, but it's instructive to consider what they would look...

At most of the last few conferences I've been to, including this one,=20 there has been a talk pointing out that primordial black holes could make=20 up most...