Comments on: What do redshifts tell astronomers?

By: From The NASA/ESA/CSA James Webb Space Telescope Via “EarthSky” : “UFOs – Ultra-red Flattened Objects – revealed by Webb” | sciencesprings

Sat, 13 Aug 2022 13:11:46 +0000

[…] deep-red, disk-shaped galaxies have a redshift (or z) between 2 and 6. That value means we’re seeing them as they were in the universe 10.3 to […]

By: From EarthSky: “What do redshifts tell astronomers?” Back to Basics | sciencesprings

Sun, 24 Jan 2021 14:42:02 +0000

[…] the full article here […]

By: pjlueck

pjlueck — Thu, 01 Sep 2016 23:16:00 +0000

hmmm, most of us laypersons who hang around these sites…would have been pleased if you would have included all THREE astronomical light shifts. Doppler effect (which can be red or blue…depending upon movement toward or from the observer), red-shift due to photons traveling THROUGH expanding space, and gravitational red-shift, as light moves out of an area with a lot of mass. These effects, when combined…are hard to tease out into their separate measurements. Please correct me if I am wrong.

By: Scientists Finally Figured Out the Origin of Those Mysterious Sounds in Space | Voice Of People

Sun, 28 Feb 2016 16:58:50 +0000

[…] Because they got an optical image of the galaxy from which the FRB originated, astronomers can measure how far away it is based on how much of its light gets stretched by the expansion of the universe before it reaches us (it’s a phenomenon called redshift). […]

By: When Light From Argon Gas Is Passed Through A Prism | fuelcalculator

When Light From Argon Gas Is Passed Through A Prism | fuelcalculator — Fri, 01 Jan 2016 07:52:33 +0000

[…] What is a redshift? – What is a redshift … colors – places where the light literally goes missing. The hydrogen atoms are tuned to absorb very specific frequencies of light. When light consisting of many colors tries to pass through the gas, those frequencies get removed … […]

By: rmp413

rmp413 — Sat, 05 Dec 2015 12:17:00 +0000

I enjoyed this post very much, and learned a lot! Thank you! You might consider adding a phrase after “the universe was uniformly expanding!” because I read that as “constant expansion” and, of course, the rate of expansion is speeding up. I blurred the meaning of those words, not being a scientist, and had to go back and fine tune my reading.

By: Update: We’re Not Alone – but the Universe May be Less Crowded than We Think - Technology Org

Wed, 08 Jul 2015 10:28:01 +0000

[…] The study, published in the Astrophysical Journal Letters, shows the first results from the Renaissance Simulations, a suite of extremely high-resolution adaptive mesh refinement (AMR) calculations of high redshift galaxy formation. […]

By: We’re Not Alone–but the Universe May Be Less Crowded than We Think | SDSC StudentTECH

Tue, 07 Jul 2015 16:58:02 +0000

[…] The study, published this week in theAstrophysical Journal Letters, shows the first results from the Renaissance Simulations, a suite of extremely high-resolution adaptive mesh refinement (AMR) calculations of high redshift galaxy formation. […]

By: Renaissance Simulations - We're NOT Alone but ... - Sciconcilium

Renaissance Simulations - We're NOT Alone but ... - Sciconcilium — Mon, 06 Jul 2015 13:00:35 +0000

[…] The study, published this week in the Astrophysical Journal Letters, shows the first results from the Renaissance Simulations, a suite of extremely high-resolution adaptive mesh refinement (AMR) calculations of high redshift galaxy formation. […]

By: We’re Not Alone – but the Universe May be Less Crowded than We Think

We’re Not Alone – but the Universe May be Less Crowded than We Think — Mon, 06 Jul 2015 08:43:51 +0000

[…] The study, published in a Astrophysical Journal Letters, shows a initial formula from a Renaissance Simulations, a apartment of intensely high-resolution adaptive filigree excellence (AMR) calculations of high redshift star formation. […]