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Cosmology

by Emily Hunt @emily.space

A science-oriented feed about cosmology! Part of the Astronomy feeds network. Astronomers can sign up to post here via @bot.astronomy.blue Contains posts from signed up users with #cosmology. Posts here are also included in the main Astronomy feed.

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CMU Mellon College of Science @cmuscience.bsky.social · 1 day ago
CMU researchers are helping prepare NASA’s Roman Space Telescope to map dark matter, study dark energy and create one of the most detailed views of the universe ever captured. 🧪⚛️ #Astrophysics #Cosmology www.cmu.edu/mcs/news-eve...
CMU Researchers Help Prepare NASA’s Roman Space Telescope

www.cmu.edu

CMU Researchers Help Prepare NASA’s Roman Space Telescope

If looking through the Hubble Telescope is peeking through a keyhole, then gazing from the new Nancy Grace Roman Space Telescope is like throwing open a window.
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Nereide @drnereide.bsky.social · 2 days ago
In 2021, an international team produced a census of everything we know within 10 pc (about 33 light-years) from the Sun. 540 objects in 339 systems: stars, brown dwarfs, white dwarfs and exoplanets. Animation: galaxymap. org 🔭🧪⚛️ #cosmology #galactic
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Ethan Siegel @startswithabang.bsky.social · 17 days ago
18 pictures show how profoundly large our cosmos is From planet Earth to the inflationary multiverse, our conception of the Universe spans an enormous range of cosmic scales. This photo tour takes us from here to eternity. bigthink.com/starts-with-... #physics #space #cosmology #multiverse
18 pictures show how profoundly large our cosmos is

bigthink.com

18 pictures show how profoundly large our cosmos is

The observable Universe is 92 billion light-years in diameter. These pictures put just how large that is in perspective.
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Nereide @drnereide.bsky.social · 23 days ago
At some 53 Mly, by the Virgo Cluster, sit galaxies whose surface light sits close to the sky level. Few stars, spread over a huge area. A study of Rubin LSST DP2 data reports 7 of them, around galaxy M49. Image: Fig. 1 of the paper. NSF–DOE Vera C. Rubin data (DP2). 🔭 🧪 ⚛️ #cosmology
Figure composed of seven side-by-side panels, each a crop of the night sky from the Vera Rubin telescope. Each panel shows one of the seven galaxy candidates in the paper. Across the dark field sit many stars of our own Galaxy. They look like sharp points, some brighter, some fainter, and they are not the galaxies named in the title. Those stars are in the foreground. Each panel has a pale patch in the middle. The edges fade out. That patch is a rarefied dwarf galaxy: few stars over a wide area, so it does not read as a sharp disk or a spiral. It looks oval or almost round, dull, gray or gray-yellow. Six of them stay small in the frame. AD 7, the last one, takes more of the frame and looks fainter. It is a wide, dim blot and does not stand out from the background as clearly as the others. The color is stacked and false. It is there only to show objects that would otherwise stay almost invisible. Each panel has a scale bar at the bottom. One arcminute is about 4.7 kiloparsecs — roughly 15,000 light-years — if the galaxies are at the Virgo Cluster distance. North is up. East is to the left.
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CMU Mellon College of Science @cmuscience.bsky.social · 23 days ago
CMU researchers used one of the largest cosmological simulations ever created to trace 13.5 billion years of cosmic evolution, revealing new insights into black holes, galaxies and gravitational waves. 🧪⚛️ #Cosmology www.cmu.edu/mcs/news-eve...
A Cosmic Look From Near Beginning to Now

www.cmu.edu

A Cosmic Look From Near Beginning to Now

In dark skies at night, distant star light twinkles and speaks to vast cosmic histories almost as old as time itself. New data from instruments such as NASA’s James Webb Space Telescope are helping as...
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