"We are talking about massive galaxies, twice as massive as the Milky Way today," said Karina Caputi, an astronomer at University of Groningen in the...

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...

Can a galaxy build enough dust in 600-800 million years so that it is visible from earth at z = 6? That is the question. B.T. Draine is an astronomer at...

jacob navia wrote: What physical evidence we have that the CMB is not just radiation coming from a diluted hydrogen cloud whose...

CL J1449+0856 is an old cluster of galaxies, at around 10 billio light years from here and now. References: http://lanl.arxiv.org/pdf/1011.1837 (paper)...

If you want to understand physics (astronomy) you have to use terminilogy independent of any human point of view. IMO Max Tegmark does not follow this idea...

From today's arxiv.org postings: http://arxiv.org/abs/1602.08498 "Discovery of a massive supercluster system at z ~ 0.47" Lietzen et al Total volume = 2.4...

http://arxiv.org/abs/1210.6031 The paper, just published in Nature, claims that stars in the dark matter halo of nearby galaxies might explain IR...

Various articles about black holes talk about X-rays emitted near the event horizon 'reflecting off the accretion disc'. What kind of material is it that can...

Gentlemen of physical science. This article is posted with a request for reviews prior to activating it on the website. All comments, corrections and...

] John Baez wrote in message ... In article...

There is a very interesting new paper on the topics of PBHs and the DM. http://arxiv.org/abs/1607.06077 Title: Primordial Black Holes As Dark Matter AUs: B....

After the big bang, the gas was too hot to form stars. A time must pass to cool the universe so that the star formation could begin. In that period of time...

The Million Quasars (Milliquas) catalogue v6.6 is released with data from publications to 30-August-2020, with the count of fully classified type-I quasars &...

The observed frequency spectrum of quasar luminosity variation should be good probe for time dilation. If quasar redshift is caused by Doppler, then high...

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

] Gary Harnagel wrote: I'm having trouble picturing why we should see the CMBR at all. Since it's traveling at the speed of light but...

What are the functional relationships dictating galactic size (presently ~10^22 cm) and star planetary system size (presently ~10^15 cm) contained in a Hubble...

If there is anew kind of attractive force, unknown to us, that pulls matter together, we should be able to see some effects of this feeble force in our...

Conundrum.... Any number of sites state that the presence of our moon over billions of years has more or less stabilized the direction of the earth's spin as...