Cosmic latte explained

Cosmic latte
Hex:FFF8E7
Source:JHU
Variations:yes
Variationstitle:
Due to flawed calculations, the average color of the universe was originally thought to be turquoise.
Variation1:Cosmic spectrum green
Variation1color:
  1. 9CFFCE
Isccname:Pale yellow green

Cosmic latte is the average color of the galaxies of the universe as perceived from the Earth, found by a team of astronomers from Johns Hopkins University (JHU). In 2002, Karl Glazebrook and Ivan Baldry determined that the average color of the universe was a greenish white, but they soon corrected their analysis in a 2003 paper in which they reported that their survey of the light from over 200,000 galaxies averaged to a slightly beigeish white.[1] The hex triplet value for cosmic latte is #FFF8E7.

Discovery of the color

Finding the average colour of the universe was not the focus of the study. Rather, the study examined spectral analysis of different galaxies to study star formation. Like Fraunhofer lines, the dark lines displayed in the study's spectral ranges display older and younger stars and allow Glazebrook and Baldry to determine the age of different galaxies and star systems. What the study revealed is that the overwhelming majority of stars formed about 5 billion years ago. Because these stars would have been "brighter" in the past, the color of the universe changes over time, shifting from blue to red as more blue stars change to yellow and eventually red giants.

As light from distant galaxies reaches the Earth, the average "color of the universe" (as seen from Earth) tends towards pure white, due to the light coming from the stars when they were much younger and bluer.[2]

Naming the color

The corrected color was initially published on the Johns Hopkins University (JHU) News website and updated on the team's initial announcement.[3] Multiple news outlets, including NPR and BBC, displayed the color in stories[4] and some relayed the request by Glazebrook on the announcement asking for suggestions for names, jokingly adding all were welcome as long as they were not "beige".[5] [6]

These were the results of a vote of the JHU astronomers involved based on the new color:[7]

Color name Credit Votes
Cosmic Latte Peter Drum 6
Cappuccino Cosmico Peter Drum 17
Big Bang Buff/Blush/Beige Several entrants 13
Cosmic Cream Several entrants 8
Astronomer Green Unknown 8
Astronomer Almond Lisa Rose 7
Skyvory Michael Howard 7
Univeige Several entrants 6
Cosmic Khaki Unknown 5
Primordial Clam Chowder Unknown 4
Though Drum's suggestion of "cappuccino cosmico" received the most votes, the researchers favored Drum's other suggestion, "cosmic latte". "Italian: Latte" means "milk" in Italian, Galileo's native language, and the similar "Italian: latteo" means "milky", similar to the Italian term for the Milky Way, "Italian: Via Lattea". They enjoyed the fact that the color would be similar to the Milky Way's average color as well, as it is part of the sum of the universe.[8] They also claimed to be "caffeine biased".

External links

Notes and References

  1. Baldry. Ivan K.. Glazebrook. Karl. Baugh. Carlton M.. Bland-hawthorn. Joss. Bridges. Terry. Cannon. Russell. Cole. Shaun. Colless. Matthew. Collins. Chris. 2002. The 2dF Galaxy Redshift Survey: Constraints on Cosmic Star Formation History from the Cosmic Spectrum. 20 April 2002. 569. 2. 582–594. 10.1086/339477. The Astrophysical Journal. astro-ph/0110676. 2002ApJ...569..582B. 54838840.
  2. Web site: The Cosmic Spectrum. Glazebrook. Karl. Baldry. Ivan. 2004-12-28. Astrophysics Research Institute. 2017-08-17.
  3. . Color of the Universe Corrected by Astronomers . . Johns Hopkins University Office of News and Information . 2002-03-07 . 2020-08-26.
  4. News: The Color of the Universe Is.... Valentine. Vikki. . 2002-03-07 . 2017-08-17.
  5. News: Universe is off colour . . 2002-03-08. BBC. 2017-08-17.
  6. Universe: Beige, not Turquoise . 8 March 2002 . . 26 August 2020 . live . https://web.archive.org/web/20080724125440/http://www.wired.com/news/technology/0%2C1282%2C50930%2C00.html . 24 July 2008 . dmy . en-US.
  7. Web site: The Cosmic Spectrum. 2002-10-05. https://web.archive.org/web/20021005185037/http://www.pha.jhu.edu/~kgb/cosspec/topten.htm. 2002-10-05. dead. 2017-08-17.
  8. News: Shankar. Vedantam. Marc. Kaufman. Rob. Stein. Not Just a Milky Way Anymore - Science. 2002-07-01. The Washington Post. 2017-08-17. en-US. 0190-8286.