8/18/2023 0 Comments Tumblr pictures![]() The gravity of intervening galaxy clusters and dark matter can lens the light from farther objects, warping their appearance as shown in the animation. This animation shows the type of science that astronomers will be able to do with future Roman deep field observations. Comparing what the universe was like at different ages will help astronomers piece together the way it has transformed over time. ![]() That can help us see billions of years into the past. When we look at farther galaxies, we see the universe as it was when their light was emitted. That’s because the light emitted by distant galaxies takes longer to reach us than light from ones that are nearby. Looking way out into space is kind of like using a time machine. It will do it by traveling back in time…well, sort of. By studying different cosmic epochs, Roman will be able to trace the universe’s expansion history, study how galaxies developed over time, and much more.Īs part of the real future survey, Roman will study the structure and evolution of the universe, map dark matter – an invisible substance detectable only by seeing its gravitational effects on visible matter – and discern between the leading theories that attempt to explain why the expansion of the universe is speeding up. As it zooms out, layers of nearer (yellow and white) galaxies are added to the frame. This video begins by showing the most distant galaxies in the simulated deep field image in red. It’s a sneak peek at what we could figure out about how and why our universe has changed dramatically across cosmic epochs. ![]() Scientists are exploring the simulation to make observation plans so Roman will help us learn as much as possible. It envisions a big patch of the sky Roman will survey when it launches by 2027. It’s based on galaxy and dark matter models combined with real data from other telescopes. One Roman simulation is helping scientists plan how to study cosmic evolution by teaming up with other telescopes, like the Vera C. The simulation showcases Roman’s power to conduct large, deep surveys and study the universe statistically in ways that aren’t possible with current telescopes. The galaxies are color coded – redder ones are farther away, and whiter ones are nearer. This simulated Roman deep field image, containing hundreds of thousands of galaxies, represents just 1.3 percent of the synthetic survey, which is itself just one percent of Roman’s planned survey.
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