Envisioning an Ultra-Deep Field from NASA's Roman Space Telescope

A team of astrophysicists has created a simulated image that shows how the Nancy Grace Roman Space Telescope could conduct a mega-exposure similar to but far larger than Hubble’s celebrated Ultra-Deep Field Image. This Hubble observation transformed our view of the early universe, revealing galaxies that formed just a few hundred million years after the big bang. By capturing the Hubble Ultra-Deep Field Image, astronomers pulled aside the cosmic curtains to reveal that a tiny, seemingly empty slice of the sky was actually teeming with thousands of galaxies, each containing billions of stars. The Hubble team harnessed the power of a long-exposure time – hundreds of hours between 2002 and 2012 – which allowed the telescope to collect more light than it could in a single, short observation. The resulting image helped us see more than 13 billion years back in time. Hubble’s Ultra-Deep Field Image offers an incredible window to the early universe, but an extremely narrow one, covering less than one ten million