A New Map Shows the Universe's Dark Energy May Be Evolving

This image shows a slice of the 3D map of galaxies collected in the first year of the Dark Energy Spectroscopic Instrument Survey. Earth is at the tip, with the furthest galaxies plotted at distances of 11 billion light-years. Each point represents one galaxy. This version of the DESI map includes 600,000 galaxies — less than 0.1% of the survey's full volume. Image Credit: DESI Collaboration/NOIRLab/NSF/AURA/R.

DESI is the most powerful multi-object survey spectrograph in the world, according to their website. It’s gathering the spectra for tens of millions of galaxies and quasars. The goal is a 3D map of the Universe that extends out to 11 billion light-years. That map will help explain how dark energy has driven the Universe’s expansion.

This image shows Stu Harris working on assembling the focal plane for the Dark Energy Spectroscopic Instrument at Lawrence Berkeley National Laboratory in 2017 in Berkeley, Calif. Ten petals, each containing 500 robotic positioners that are used to gather light from targeted galaxies, form the complete focal plane. DESI is attached to the 4-meter Mayall Telescope at Kitt Peak National Observatory.

DESI measures dark energy by relying on baryonic acoustic oscillations Baryonic matter is “normal” matter: atoms and everything made of atoms. The acoustic oscillations are density fluctuations in normal matter that date back to the Universe’s beginnings. BAO are the imprint of those fluctuations, or pressure waves, that moved through the Universe when it was all hot, dense plasma.

Levi is referring to Lambda Cold Dark Matter , also known as the standard model of Big Bang Cosmology. Lambda CDM includes cold dark matter—a weakly interacting type of matter—and dark energy. They both shape how the Universe expands but in opposite ways. Dark energy accelerates the expansion, and regular matter and dark matter slow it down. The Universe evolves based on the contributions from all three. The Lambda CDM does a good job of describing what other experiments and observations find.

대한민국 최근 뉴스, 대한민국 헤드 라인

Similar News:다른 뉴스 소스에서 수집한 이와 유사한 뉴스 기사를 읽을 수도 있습니다.

New Camera to Offer Insights into Dark Matter and Dark EnergyThe Department of Energy’s (DOE) Office of Science has supported the design, development, and construction of a new camera that will provide new insights into dark matter and dark energy. The camera will be installed in an observatory named after Vera C.
출처: cleantechnica - 🏆 565. / 51 더 많은 것을 읽으십시오 »

Researchers use the Dark Energy Spectroscopic Instrument to make the largest 3D map of our universeWith 5,000 tiny robots in a mountaintop telescope, researchers can look 11 billion years into the past. The light from far-flung objects in space is just now reaching the Dark Energy Spectroscopic Instrument (DESI), enabling us to map our cosmos as it was in its youth and trace its growth to what we see today.
출처: physorg_com - 🏆 388. / 55 더 많은 것을 읽으십시오 »

The largest 3-D map of the universe reveals hints of dark energy’s secretsA year of data from DESI, the Dark Energy Spectroscopic Instrument, suggests that, contrary to expectations, dark energy might vary over time.
출처: ScienceNews - 🏆 286. / 63 더 많은 것을 읽으십시오 »

Largest 3D map of our universe could hint that dark energy evolves with timeSharmila Kuthunur is a Seattle-based science journalist covering astronomy, astrophysics and space exploration. Follow her on X skuthunur.
출처: SPACEdotcom - 🏆 92. / 67 더 많은 것을 읽으십시오 »

Deciphering the Dark: The Accelerating Universe and the Quest for Dark EnergyScience, Space and Technology News 2024
출처: SciTechDaily1 - 🏆 84. / 68 더 많은 것을 읽으십시오 »

Science Simplified: What Are Dark Matter and Dark Energy?Science, Space and Technology News 2024
출처: SciTechDaily1 - 🏆 84. / 68 더 많은 것을 읽으십시오 »