A simulated image of NASA’s Nancy Grace Roman Space Telescope’s future observations toward the center of our galaxy, spanning less than 1 percent of the total area of Roman’s Galactic Bulge Time-Domain Survey. The simulated stars were drawn from the Besançon Galactic Model.

Exploring the Changing Universe with the Roman Space Telescope

The view from your backyard might paint the universe as an unchanging realm, where only twinkling stars and nearby objects, like satellites and meteors, stray from the apparent constancy. But stargazing through NASA’s upcoming Nancy Grace Roman Space Telescope will offer a front row seat to a dazzling display of cosmic fireworks sparkling across the sky.

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Astronomers used three of NASA's Great Observatories to capture this multiwavelength image showing galaxy cluster IDCS J1426.5+3508. It includes X-rays recorded by the Chandra X-ray Observatory in blue, visible light observed by the Hubble Space Telescope in green, and infrared light from the Spitzer Space Telescope in red. This rare galaxy cluster has important implications for understanding how these megastructures formed and evolved early in the universe.

How Astronomers Time Travel

Let’s add another item to your travel bucket list: the early universe! You don’t need the type of time machine you see in sci-fi movies, and you don’t have to worry about getting trapped in the past. You don’t even need to leave the comfort of your home! All you need is a powerful space-based telescope.

But let’s start small and work our way up to the farthest reaches of space. We’ll explain how it all works along the way.

#NASA #astronomy #telescope #Roman Space Telescope #dark energy #galaxies #cosmology #astrophysics #stars #galaxy #Hubble #Webb #Chandra #Spitzer #space images

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Knowledge 14

Wild New Paper Says 'Quantum Gravity' Could Emerge From a Holographic Universe

Gravity is a quantum construction of our natural environment.

While the past light-cone is generally local, the future light cone is generally non-local.https://goldennumberratio.medium.com/while-the-past-light...Consider the above light cone illustrated in Einstein’s THE MEANING OF RELATIVITY.Consider the standard light cone depicted at Wikipedia, which Einstein’s light cone inspired and informed:https://en.wikipedia.org/wiki/Light_cone...Let us show that while the past light-cone is generally local, the future light cone is generally non-local.

Read more in: facebook.com/elliotmcguckenphysics

In Ancient Mesopotamia, the new year was rung in at a festival known as Akitu, which means “barley” in Sumerian. The festival was made up of two distinct festivals, each held at the beginning of the two half-years on the Sumerian calendar—one to celebrate sowing barley, and the other to celebrate cutting it.

Source: remarkable-travels.blogspot.com

The world’s oldest map of the night sky was amazingly accurate

Newly discovered fragments of 2,200-year-old star coordinates—once thought lost—reveal the incredible skill of the ancient astronomer Hipparchus.