Dark Energy Dark Matter The two largest pieces of the Universe that we know the least about, yet nothing less than the ultimate fate of the Universe will be determined by them. (Illustration: NASA/CXC/M.Weiss) The Universe in a Jelly Bean Jar
This diagram shows our cosmic address at a glance. We see our planetary system around the Sun, our stellar neighborhood in our galaxy, our galaxy in the local group of galaxies, and our group in the entire universe. The universe is big
All the details about our planets and other fascinating facts. How far is the Earth from the Sun? Is the Earth round or flat? Why does the Earth look so flat when we look outside? Why does the Earth have seasons?