Step 1: How it all started. An illustration of the timeline of the universe following the big bang. (Image credit: NASA/WMAP Science Team) The Big Bang was not an explosion in space, as the theory

None of these prove the Big Bang, since scientific theories are not proven. Many of these facts are consistent with the Big Bang and some other cosmological models, but taken together these observations show that the Big Bang is the best current model for the Universe. These observations include: The darkness of the night sky - Olbers' paradox.

Here are 10 things you might want to know about black holes: Galaxy NGC 1068 is shown in visible light and X-rays in this composite image. High-energy X-rays (magenta) captured by NASA's Nuclear Spectroscopic Telescope Array, or NuSTAR, are overlaid on visible-light images from both NASA's Hubble Space Telescope and the Sloan Digital Sky Survey

A recently spotted black hole existed about 570 million years after the big bang—and may help us understand the evolution of the universe. This is what the first stars looked like as they were

From the early probes of the 1950s and 1960s to the great telescopes of the 1990s and 21st century, NASA scientists have been exploring the evolution of the universe from the Big Bang to the present. NASA 60th: What's Out There. Watch on. Pillars of Creation, Eagle Nebula, a cloud of gas and dust created by an exploding star from which new ^{This graphic shows a timeline of the universe based on the Big Bang theory and inflation models. (Image credit: NASA / WMAP Science Team) If dark energy is causing the universe to expand at an} . 380 312 325 319 215 296 196 456

big bang theory facts nasa