Here are some websites that cover universe discoveries: 

• ViewSpace: Produced by the Space Telescope Science Institute in partnership with NASA 
• Space.com: Provides news on space exploration, innovation, and astronomy 
• NASA Science: Seeks to discover the secrets of the universe 
• Scale of the Universe: An interactive experience that shows the vast ranges of the visible and invisible world 
• Hubble Home: Provides news, images, and videos 
• 14 amazing space and astronomy discoveries of the 21st century so far: Provides facts about astronomy and space 

Other websites that cover universe discoveries include: 

• TheSkyLive.com: Provides a 3D solar system viewer 
• AMNH: Explains how the universe began 
• HubbleSite: Provides news, images, and videos 
• NASA: Discovered methane and carbon dioxide in the atmosphere of K2-18 b

• ViewSpace Offers interactives and videos that highlight the latest developments in astronomy and Earth science 
• NASA’s Eyes Lets you learn about your home planet, our solar system, the universe beyond, and the spacecraft exploring them 
• Hubble Skymap Lets you roam the Milky Way to find a selection of galaxies, stars, nebulae, and more 
• Universe Sandbox A physics-based space simulator that merges gravity, climate, collision, and material interactions 

Other websites that let you explore the universe include: Google Earth, SkyView® Lite. 

Here are some websites that show the size of the universe: 

• Universcale: Shows the relative size of known objects in the universe 
• A Logarithmic Map of the Entire Observable Universe: Provides a logarithmic map of the known universe 
• The Map of the Universe: Shows a thin slice of the universe 
• Wikipedia: Shows a visualization of the observable universe 

The universe is 13.8 billion years old. The edge of the universe is about 46.5 billion light years away from any point in the universe. 

Yes, there are 3D maps of the universe.  The Sloan Digital Sky Survey (SDSS) created the largest and most detailed 3D map of the universe.  The map includes more than 2 million galaxies and covers 11 billion years of the universe’s history. The SDSS used a telescope at Apache Point Observatory in New Mexico to create the map. 

3D maps of the universe help cosmologists and astrophysicists study the large-scale structure of the universe. They can understand how the universe evolved in the past and how it will evolve in the future. 

You can find 3D maps of the universe on these websites: 

• The Sloan Digital Sky Survey 
• In-The-Sky.org 
• The Map of the Universe

Can we see the whole observable universe

No, humans can’t see the entire universe from Earth. The observable universe is a relatively small bubble that’s expanding.  The observable universe is filled with galaxies that extend in every direction for more than 10 billion light-years.  However, the other 96% of the universe is made of stuff that astronomers can’t see, detect, or even comprehend. 

The reason we can’t see beyond the observable universe is because of the “red limit”. Light can’t slow down in a vacuum, so as the source object moves faster and faster away from us, the light loses energy and red-shifts to an eventual effective wave-length of infinity. 

The exact size of the whole universe is unknown, but estimates put it at around 23 trillion light-years in diameter

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