Can we detect a blueshift of -c?
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From: Brad Guth on 26 Apr 2010 00:44 On Apr 25, 7:36 pm, BURT <macromi...(a)yahoo.com> wrote: > On Apr 25, 7:10 pm, "Anthony Buckland" > > > > <anthonybucklandnos...(a)telus.net> wrote: > > "Brad Guth" <bradg...(a)gmail.com> wrote in message > > >news:d0979a19-3038-4e45-887b-d6967af86803(a)z21g2000pre.googlegroups.com.... > > > >If something substantial (such as a 10 solar mass super-star and its > > >tidal associated swarm of Jupiter+ planets w/moons) was headed as > > >seemingly directly towards us at -c (-299.8e3 km/sec), could that item > > >regardless of size, mass and vibrance of energy be detected? > > >... > > > Since it's substantial, the best that can be managed is > > slightly less than -c. When the first photons of its > > approach to us were detected by us, it would actually > > be much closer than it appeared. We would have > > very little time to react. We would almost surely be > > doomed. Very soon. > > Is a nearby supernova going to take us out? > > Science knows our future. > > Mitch Raemsch Perhaps Sirius(B) almost did, and Sirius(A) still could (especially if B merges with A), or conceivably when Sirius(B) converts into a neutron star. ~ BG
From: Brad Guth on 26 Apr 2010 00:49 On Apr 25, 8:15 pm, BURT <macromi...(a)yahoo.com> wrote: > On Apr 25, 8:06 pm, dlzc <dl...(a)cox.net> wrote: > > > Dear BURT: > > > On Apr 25, 7:36 pm, BURT <macromi...(a)yahoo.com> wrote: > > ... > > > > Is a nearby supernova going to take us out? > > > Likely nothing so impressive. Most likely famine and contagion will. > > > > Science knows our future. > > > Science presumes all is ultimately knowable. Except "why". > > > David A. Smith > > God is not going to let any planet die. Period. The Earth will be > around forever. Tell that one to all those thousands or perhaps millions of vaporized solar systems within those galaxies that merged and fondled one another. btw; life on Earth has been terminated and restarted several times thus far. That's a lot of God do-overs. ~ BG
From: BURT on 26 Apr 2010 01:04 On Apr 25, 9:49 pm, Brad Guth <bradg...(a)gmail.com> wrote: > On Apr 25, 8:15 pm, BURT <macromi...(a)yahoo.com> wrote: > > > > > > > On Apr 25, 8:06 pm, dlzc <dl...(a)cox.net> wrote: > > > > Dear BURT: > > > > On Apr 25, 7:36 pm, BURT <macromi...(a)yahoo.com> wrote: > > > ... > > > > > Is a nearby supernova going to take us out? > > > > Likely nothing so impressive. Most likely famine and contagion will. > > > > > Science knows our future. > > > > Science presumes all is ultimately knowable. Except "why". > > > > David A. Smith > > > God is not going to let any planet die. Period. The Earth will be > > around forever. > > Tell that one to all those thousands or perhaps millions of vaporized > solar systems within those galaxies that merged and fondled one > another. > > btw; life on Earth has been terminated and restarted several times > thus far. That's a lot of God do-overs. > > ~ BG- Hide quoted text - > > - Show quoted text - You have wittnessed universal death? Life never comes to an end. In the past certain life did but not intelligent anywhere in the universe. Mitch Raemsch
From: Brad Guth on 26 Apr 2010 01:58 On Apr 25, 10:04 pm, BURT <macromi...(a)yahoo.com> wrote: > On Apr 25, 9:49 pm, Brad Guth <bradg...(a)gmail.com> wrote: > > > > > On Apr 25, 8:15 pm, BURT <macromi...(a)yahoo.com> wrote: > > > > On Apr 25, 8:06 pm, dlzc <dl...(a)cox.net> wrote: > > > > > Dear BURT: > > > > > On Apr 25, 7:36 pm, BURT <macromi...(a)yahoo.com> wrote: > > > > ... > > > > > > Is a nearby supernova going to take us out? > > > > > Likely nothing so impressive. Most likely famine and contagion will. > > > > > > Science knows our future. > > > > > Science presumes all is ultimately knowable. Except "why". > > > > > David A. Smith > > > > God is not going to let any planet die. Period. The Earth will be > > > around forever. > > > Tell that one to all those thousands or perhaps millions of vaporized > > solar systems within those galaxies that merged and fondled one > > another. > > > btw; life on Earth has been terminated and restarted several times > > thus far. That's a lot of God do-overs. > > > ~ BG- Hide quoted text - > > > - Show quoted text - > > You have wittnessed universal death? > > Life never comes to an end. In the past certain life did but not > intelligent anywhere in the universe. > > Mitch Raemsch Your own self as proof that Earth isn't home to an intelligent species, is accepted. What is it about the past or present day humanity of Earth that seems intelligent to you? Is war intelligent? Did our god make a mistake by creating other than albino humans? What about the other remaining species of life on Earth (less than 0.1% of what used to exist), that's a good billion years better established, near a million times more tonnage than us and otherwise more qualified for this world then humans. ~ BG
From: Inertial on 26 Apr 2010 09:05
"Brad Guth" <bradguth(a)gmail.com> wrote in message news:825c6d6f-6143-4ffa-aedf-1572234c69ed(a)y6g2000prk.googlegroups.com... > On Apr 22, 4:01 pm, artful <artful...(a)hotmail.com> wrote: >> On Apr 23, 6:05 am, Brad Guth <bradg...(a)gmail.com> wrote: >> >> >> >> > On Apr 22, 11:25 am, "Greg Neill" <gneil...(a)MOVEsympatico.ca> wrote: >> >> > > Brad Guth wrote: >> > > > On Apr 22, 9:47 am, "Greg Neill" <gneil...(a)MOVEsympatico.ca> wrote: >> > > >> This is not in contradiction with Relativity, which places >> > > >> constraints on how fast massive objects move *in* space, and >> > > >> the speed of light *in* space as measured by a local observer. >> > > >> Relativity does not place constraints on how quickly space >> > > >> itself can expand. >> >> > > > Nor on how quickly it might contract as equally undetectable if >> > > > that >> > > > blueshift is worth anything near -c. For all we know the >> > > > undetected >> > > > portions of our universe are contracting/imploding, unless there's >> > > > something beyond that's pulling matter outwards. >> >> > > Of course even if regions of space beyond our cosmic >> > > horizon were moving towards us at any rate we would >> > > not be able to see them since light from there would >> > > still have to cross the horizon in our direction and >> > > that horizon is moving away at c; light there and >> > > beyond can never reach us. >> >> > How about photons from a vibrant 10 solar mass star that's situated >> > well within our visual detection horizon of 13.7e9 ly, but trekking >> > directly towards us at -c? >> >> It can't happen .. so why ask about it? >> >> Every object with mass travels at less than c in our (and every) frame >> of reference > > In that case whenever unknowns or unexplainable things happen, we can > say with absolute "artful" certainty that it had absolutely nothing > whatsoever to do with anything moving along or closing at c or faster. Irrelevant to your question. Your question is asking for what would happen in a situation that cannot happen. Its pointless. |