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...

] What do people think of the recent claim in Nature that one of the new wide field instruments has found a candidate diffuse galaxy NGC1052-DF2 which...

Amateur solar flare imaging is on my list of things to do. The problem becomes how to size and control a sun cover disk in the telescope. This is the...

There are 2 rocks in space. As a result of big bang the universe is expanding. Is it the vacuum that is expanding therefor the distance between the rocks or is...

"Just how big is the Andromeda galaxy?" (astronomy.com) http://astronomy.com/news/magazine/2018/02/adromeda-is-the-same-size-as-the-milky-way If the mass...

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...

] 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...

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...

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...

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...

On Monday, January 1, 2018 at 9:19:09 AM UTC-7, Phillip Helbig (undress to reply) wrote: In article...

] Interstellar object may hold 'alien' water The first known interstellar asteroid may hold water from another star system in its interior, according...

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...