View Profile: macaw - Cosmoquest Forum

Yesterday, 10:07 PM

slang replied to a thread Asian Fruit Identification Question. in Science and Technology

https://en.wikipedia.org/wiki/Capparis_spinosa_subsp._nummularia ?

2 replies | 59 view(s)

Yesterday, 04:47 PM

Cougar replied to a thread A unschooled logical proposition on dark matter in Against the Mainstream

I'm no expert, but.... Most of the universe is "empty" space. Light is not bent to any appreciable degree unless it travels very close to a...

4 replies | 303 view(s)

Yesterday, 04:25 PM

Cougar replied to a thread Mass of nearby stars in Space/Astronomy Questions and Answers

As to dark matter - and check my math on this - the volume of dark matter in which our galaxy is embedded (about 1016 ly3 using a sphere with radius...

10 replies | 180 view(s)

Yesterday, 05:11 AM

Geo Kaplan replied to a thread Black Holes and Larmor Radiation and Why I think Big Bang is Wrong in Against the Mainstream

Either GR's equivalence principle is wrong, or your interpretation of Larmor's formula is. Guess which we're going to choose. You attempt to...

30 replies | 532 view(s)

Yesterday, 02:51 AM

Geo Kaplan replied to a thread Black Holes and Larmor Radiation and Why I think Big Bang is Wrong in Against the Mainstream

As worded, your statement is wrong. A charge sitting at the surface of the earth does not radiate, for example. Not all accelerations produce...

30 replies | 532 view(s)

2018-Jul-16, 06:02 PM

Grey replied to a thread Heavy light, is there such a thing? in Space/Astronomy Questions and Answers

They can indeed travel forever, at least in principle. The photons in the cosmic microwave background have been traveling through space for 13.7...

45 replies | 1659 view(s)

2018-Jul-16, 05:52 PM

Grey replied to a thread Study says we are probably alone in the universe in Life in Space

Fair enough. Earlier in their paper, they do mentioned that their range for fc of two orders of magnitude is based on other people's range of...

88 replies | 1856 view(s)

2018-Jul-16, 12:45 PM

Cougar replied to a thread Gas flowing into galaxies in Space/Astronomy Questions and Answers

It's worse than that. It's a sentence fragment. "If gas is flowing into galaxies to replace gas forming stars has some kind of steady state".......

8 replies | 227 view(s)

2018-Jul-16, 12:32 PM

Cougar replied to a thread English-to-English autotranslate in Small Media at Large

In other words, noncommutative.

20 replies | 342 view(s)

2018-Jul-16, 12:24 PM

Cougar replied to a thread In-Finite in Astronomy

Welcome to the boards, LT! The "average black hole singularity" does not have a "size." Since you seem to like analogies, does division by zero...

3 replies | 73 view(s)

2018-Jul-16, 09:23 AM

slang replied to a thread scientists delusions and 5 sigma in Science and Technology

The forum should have some kind of "irony-indicator" on threads.

24 replies | 508 view(s)

2018-Jul-14, 01:28 PM

Grey replied to a thread Hair in Science and Technology

My understanding is that hair follicles go through cycles of activity and dormancy, and each time they start a new cycle of activity, they push out...

13 replies | 239 view(s)

2018-Jul-14, 12:42 PM

Grey replied to a thread English-to-English autotranslate in Small Media at Large

My wife teaches anthropology at a local college, and sometimes sees papers submitted like this (generally by students that don't speak English as a...

20 replies | 342 view(s)

2018-Jul-12, 04:30 PM

Grey replied to a thread Study says we are probably alone in the universe in Life in Space

We want to do both, of course! Sure. So if you're trying to do a Drake-style analysis of probabilities, it makes sense to assign a pretty high...

88 replies | 1856 view(s)

2018-Jul-11, 05:35 PM

Grey replied to a thread Study says we are probably alone in the universe in Life in Space

Sure. But the Drake equation does a pretty good job of quantifying the assumptions that go into the Fermi paradox.

88 replies | 1856 view(s)

2018-Jul-11, 02:00 PM

Grey replied to a thread Study says we are probably alone in the universe in Life in Space

Agreed. Selfsim is also right to point out that this isn't as easy as I made it sound. I'll admit that I'm just excited by the prospect that we...

88 replies | 1856 view(s)

2018-Jul-11, 06:25 AM

Geo Kaplan replied to a thread Cosmology with a perfect Occam's razor. in Against the Mainstream

Sebas -- It's been over a week since you last posted. Have you abandoned this thread? If not, when may I expect an answer to my question about...

34 replies | 1609 view(s)

2018-Jul-10, 10:55 PM

Geo Kaplan replied to a thread Plasma in the accretion disc in Space/Astronomy Questions and Answers

You're just going to have to live with the fact that workers in the field develop their own terminology without consulting you, Dave. Repeatedly...

41 replies | 816 view(s)

2018-Jul-10, 08:59 PM

slang replied to a thread Israelis to land on the Moon on the cheap? in Space Exploration

wd40's last post from its own thread merged into his own previous thread.

5 replies | 768 view(s)

2018-Jul-10, 04:22 PM

Grey replied to a thread Well-loved places you can never go back to in Off-Topic Babbling

I have a long list. The first that comes to mind is a house where I grew up, which is now a parking lot. I'm especially appalled that they seem to...

24 replies | 416 view(s)

2018-Jul-10, 01:28 PM

Grey replied to a thread Study says we are probably alone in the universe in Life in Space

I agree that many of the reports of the paper were phrased such that it sounded like they had concluded that there was no other life anywhere. In...

88 replies | 1856 view(s)

2018-Jul-10, 01:22 PM

Grey replied to a thread Study says we are probably alone in the universe in Life in Space

I'm not really sure. Which is probably why it makes sense to assign a pretty high uncertainty to our probability assessment that a civilization will...

88 replies | 1856 view(s)