When it comes to telescopes, there are no bigger names than Hubble and Webb, but why have two space telescopes anyway, how ...

The original Hubble Deep Field may have only covered a tiny region of the sky, but taught us that there were at least hundreds of billions of galaxies contained within the observable Universe.

With XDF, NASA took a patch of sky within the original Hubble Ultra Deep Field and doubled the exposure time to a total of two million seconds, or an impressive 23 days.

This small fraction of the original Hubble Deep Field image is a huge part of how we learned what our Universe looks like. R. WILLIAMS (STSCI), THE HUBBLE DEEP FIELD TEAM AND NASA/ESA.

Called the eXtreme Deep Field, or XDF, the photo was assembled by combining 10 years of NASA Hubble Space Telescope photographs taken of a patch of sky at the center of the original Hubble Ultra ...

The eXtreme Deep Field, which is the center of the original Hubble Ultra Deep Field, nearly 5,500 galaxies were captured after many hours of light collection. [VIDEO: ...

This image of the Hubble Ultra Deep Field was released in 2014 and includes additional data collected from other instruments besides Hubble. The original Hubble Deep Field was released in 2004 ...

It’s a composite image of an area of space known as the Hubble Ultra-Deep Field, and it took hundreds of hours to produce using the telescope’s Wide Field Camera 3.

This new take on Hubble's deep image pulls in new light from obscure galaxies. A. S. Borlaff et al. The original Ultra Deep Field image from 2004 is described as "a 'deep' core sample of the ...

The original Deep Field photo revealed about 3,000 previously unknown galaxies in a patch of sky only 2.5 arc-minutes across, or about one 24-millionth of the whole sky.