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dark matter hypothesis by No Name
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...
(Multi-page thread 1 2)
December 8th 18 07:45 PM
by brad Go to last post
12 181
Tales of Cataloguing XII -- resolving a caution by Eric Flesch
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...
November 26th 18 06:50 AM
by Eric Flesch Go to last post
0 47
Is higher mass-density at higher Z detectable with current probes? by stargene
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...
November 20th 18 08:35 AM
by Phillip Helbig (undress to reply)[_2_] Go to last post
1 63
Axion Dark Matter by Steve Willner
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...
November 16th 18 01:29 AM
by Steve Willner Go to last post
0 47
Cosmological Problems by Richard D. Saam
There have been recent cosmological experimental disclosures represented in part by the following: The 7Be(n,p)7Li reaction and the Cosmological Lithium...
November 9th 18 08:37 AM
by Steve Willner Go to last post
4 125
Spaceship Oumuamua by jacobnavia
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...
(Multi-page thread 1 2)
November 9th 18 04:35 AM
by No Name Go to last post
12 527
interesting dark-matter candidate by Phillip Helbig (undress to reply)[_2_]
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...
October 29th 18 05:40 PM
by Phillip Helbig (undress to reply)[_2_] Go to last post
2 107
"Universe Not Expanding" by Phillip Helbig (undress to reply)[_2_]
In article , Lawrence Crowell writes: "The scientists carefully...
October 20th 18 09:21 PM
by Phillip Helbig (undress to reply)[_2_] Go to last post
0 111
Milliquas v5.4 released by Eric Flesch
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...
October 20th 18 11:40 AM
by Eric Flesch Go to last post
0 96
IAU: Hubble-Lemaitre Law? by Steve Willner
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,...
October 7th 18 03:47 AM
by Phillip Helbig (undress to reply)[_2_] Go to last post
4 183
alternative to disposing of old library contents by Phillip Helbig (undress to reply)[_2_]
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....
September 6th 18 07:27 AM
by Phillip Helbig (undress to reply)[_2_] Go to last post
0 312
Missing matter found in the cosmic web by Nicolaas Vroom
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...
September 2nd 18 08:00 AM
by Phillip Helbig (undress to reply)[_2_] Go to last post
8 565
Physicists Think They've Spotted the Ghosts of Black Holes from Another Universe by Internetado
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...
August 30th 18 08:28 AM
by Internetado Go to last post
0 209
Actual linkage between tectonic-mantle motions and lunar recession speeds? by stargene
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, &...
August 25th 18 12:51 AM
by Phillip Helbig (undress to reply)[_2_] Go to last post
7 288
simple math question about orbital motion by No Name
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...
August 25th 18 12:40 AM
by Bruce Scott Go to last post
1 331
Parker Solar Probe by Richard D. Saam
The Eugene Parker Solar Probe has just launched to investigate close up solar magnetic and electric fields. In his book: "Conversations on Electric and...
August 15th 18 06:07 AM
by Richard D. Saam Go to last post
2 239
Moderator's Note: delays in article processing in the next 3 days by Jonathan Thornburg [remove -animal to reply][_3_]
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...
0 267
First stars by Steve Willner
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...
(Multi-page thread 1 2)
May 29th 18 04:22 PM
by jacob navia Go to last post
13 911
Galaxy cluster at z=4.31 by jacobnavia
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...
May 11th 18 09:44 AM
by Steve Willner Go to last post
3 566
Missing Baryons by Steve Willner
By coincidence, I ran across a recent paper discussing the "missing baryon"...
April 21st 18 11:15 AM
by Steve Willner Go to last post
0 359
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