aIs it possible that the missing mass, the 'dark matter', consists of two generations of burned out stars? These would be short lifetimes, hence large...

The "Tales of Cataloguing" series on this forum were about my trail of data fixes along the way to publishing the "Half Million Quasars Catalogue" (HMQ), 2015...

A question regarding the expansion of the universe: As the Hyperphysics page @ http://hyperphysics.phy-astr.gsu. edu/hbase/Astro/redshf.html shows, the mass...

Just want to mention today's colloquium on the subject. It's available at https://www.youtube.com/watch?v=UUEEIaVSVlE At least I hope that link will...

Oumuamua is leaving us at high speed. Humans try to follow it with the VLT, and they report that the thing... is accelerating. Accelerating? When I first...

I'm now at a cosmology conference: https://indico.cern.ch/event/736594/overview One reason to go to a conference is to hear about interesting things one...

In article , Lawrence Crowell writes: "The scientists carefully...

The Million Quasars (Milliquas) catalogue presents a new release, v5.4 which includes all published quasars to 15 October 2018. The long-term intent is to...

The IAU is considering recommending that the expansion of the universe be referred to as the "Hubble-Lemaitre Law" instead of the "Hubble Law." More details,...

It seems that some university libraries are in the process of getting rid of journals, books, and so on, at least those which are not available electronically....

The article "Missing matter found in the cosmic web" in Nature of 21 June 2018 (See https://www.nature.com/articles/d41586-018-05432-2) Starts with the...

We're not living in the first universe. There were other universes, full of black holes, in other eons before ours, a group of physicists has said. And we...

Is there an overarching link between the fact that, on the one hand: (1) plate tectonic motions range typically between a few mm/year to about 100 mm/year, &...

An acceleration of an orbiting body, in a central force, is defined as: a(r,v) = -k/r^2(1 + v^2/c^2) k = GM = const, v = dr/dt = r' what is the precession...

The Eugene Parker Solar Probe has just launched to investigate close up solar magnetic and electric fields. In his book: "Conversations on Electric and...

Dear newsgroup participants, Due to moderator travel, there may not be any active moderators for the next 3 days. If so, any articles submitted during that...

A recent _Nature_ article http://adsabs.harvard.edu/abs/2018Natur.555...67B shows evidence that the first stars appeared by z=20, about 180 Myr after the Big...

ALMA sees very far. And at z=4.31, just 1.4 Gy after the supposed "bang"... it sees a galaxy cluster the mass of the coma...

By coincidence, I ran across a recent paper discussing the "missing baryon"...

Suppose a normal galaxy like ours. Heavy stars are produced by the galaxy, converting cold gas into black holes or heavy neutron stars. Supernova explosions...