3M views · 106K reactions | Ever wonder how far away those stars in the night sky are? 樂 Our Sun’s nearest neighbor star is about 4 light-years away … our galaxy is over 100,000 light-years wide! But what does that even mean? Check out this Tumblr for a primer: https://nasa.tumblr.com/post/184153458369/how-big-is-our-galaxy-the-milky-way | NASA Universe | Facebook

Some galaxies, like some cities, are large and sprawling. Giant spiral galaxy NGC 772—at 200,000 light-years across and twice the size of our own galaxy—can be compared with the sprawling metropolis of Houston, which has a total area of more than 650 square miles (1,680 square kilometers). #GalaxyCity #EarthAndSpace Credit: NASA Earth/NASA/ESA. | Space Telescope Science Institute