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Trouble For Dark Energy Hypothesis? by Jonathan Thornburg [remove -animal to reply][_3_]
] 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...
Today 05:57 PM
by Tom Roberts Go to last post
2 16
Eddington Limit cited on PBS Nova by root[_2_]
The most recent program of PBS Nova considered how massive black holes could have been formed in the early universe. It was concluded that they could not have...
Yesterday 06:51 PM
by Eric Flesch Go to last post
1 20
Astronomy and Biology by jacobnavia
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...
January 12th 18 07:00 PM
by Martin Brown[_3_] Go to last post
4 32
Discovery of non-transiting exo planets possible? by David Spain
Kepler uses dip in light curves of stars to determine the existence of exo-planets, but that presumption is that these "exo" solar systems have their...
January 11th 18 09:40 PM
by Steve Willner Go to last post
6 74
A quasar, too heavy to be true by jacobnavia
https://www.nature.com/articles/nature25180 https://arxiv.org/abs/1712.01860 -- jt]] Here we report observations of the quasar ULAS J134208.10+092838.61...
(Multi-page thread 1 2 3 ... Last Page)
39 246
A quasar, too heavy to be true by Gary Harnagel
On Monday, January 1, 2018 at 9:19:09 AM UTC-7, Phillip Helbig (undress to reply) wrote: In article...
January 5th 18 10:19 AM
by Richard D. Saam Go to last post
6 40
Interstellar object may hold 'alien' water by Internetado
] Interstellar object may hold 'alien' water The first known interstellar asteroid may hold water from another star system in its interior, according...
December 21st 17 11:11 PM
by Internetado Go to last post
0 30
Speedometer by jacobnavia
Imagine this: You are jogging and want to know your speed. Easy. Measure the CMB from all directions, and you will see that the CMB becomes bluer in the...
December 21st 17 11:10 PM
by Richard D. Saam Go to last post
3 54
'Oumuamua by Richard D. Saam
'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...
November 27th 17 10:08 PM
by John Heath Go to last post
3 125
Apparent equality between Jovian esc. velocities and Sol's esc. vel. by stargene
Okay, I've never heard anything about this before=E2=80=A6Somebody = please explain this: In scanning the wikipedia entry on "Escape Velocity",...
November 27th 17 10:06 PM
by Libor 'Poutnik' Stříž Go to last post
3 53
Addition of grav'l potentials? by stargene
An impossible question? I would like to know if there is a straightforward way of calculating the sum of two different gravitational potentials U and V at...
November 27th 17 10:06 PM
by [email protected] Go to last post
4 127
Verifying by jacobnavia
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...
(Multi-page thread 1 2)
November 18th 17 09:45 AM
by jacobnavia Go to last post
13 148
Dark matter is: by jacobnavia
As I read in the press, we have found a great percentage of dark matter. Astronomers have suceeded in seeing the shadows of filaments in the light of the CMB....
(Multi-page thread 1 2 3 ... Last Page)
November 13th 17 07:00 AM
by Phillip Helbig (undress to reply)[_2_] Go to last post
33 273
entropy and gravitation by Phillip Helbig
A smooth distribution corresponds to high entropy and a lumpy one to low entropy if gravity is not involved. For example, air in a room has high entropy,...
(Multi-page thread 1 2 3 ... Last Page)
November 13th 17 06:30 AM
by Phillip Helbig Go to last post
30 591
WIMPs by Steve Willner
There have been many discussions here about WIMPs and searches for them. Today's CfA Colloquium given by Dan Hooper of Fermilab offered a good overview of the...
October 27th 17 03:41 AM
by Phillip Helbig (undress to reply)[_2_] Go to last post
2 80
Ratio baryonic versus non-baryonic matter in the Universe. by Nicolaas Vroom
The article: https://www.newscientist.com/article/2149742-half-the-universes-missing-matter-has-just-been-finally-found/ claims that: "Half the universe's...
October 25th 17 07:06 AM
by Phillip Helbig (undress to reply)[_2_] Go to last post
1 62
Google Scholar Citations: need contact address for bugs by Phillip Helbig
Does anyone know how to contact a real person in order to report bugs in Google Scholar Citations? In my own case (and certainly in that of many others as...
October 15th 17 03:08 PM
by Phillip Helbig Go to last post
0 99
Spectral line changes? by No Name
] Question: Is the spectral line signal for hydrogen different for hydrogen in hydrogen gas compared with hydrogen in water? Or, if one were observing the...
October 5th 17 04:31 PM
by John Heath Go to last post
5 285
Cassini mission end by Bruce D. Scott[_2_]
In sci.astro.research Steve Willner wrote: | As most of us probably know, the Cassini mission to Saturn will end | with the Grand...
September 23rd 17 08:03 PM
by root[_2_] Go to last post
1 132
Acceleration by jacobnavia
A sample of 23 galaxies just 800 million years after the big bang was published by a team of astronomers: https://arxiv.org/abs/1703.02985v3 The article is...
September 21st 17 07:22 AM
by Edward Prochak Go to last post
4 171
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