Cosmology NASA Videos

A Journey of Light Through Space and Time
This artist's animation depicts the 'life' of a photon, or particle of light, as it travels across space and time, from the very early universe to the Planck satellite. By creating maps of the oldest light in the universe, Planck scientists are learning about the epic journey of light through the cosmos. The mission's maps showing this ancient light, called the cosmic microwave background, have revealed the most precise information yet about the universe's fundamental traits, such as its age, contents and the seeds of all structure, without which we would not exist.

Colliding Neutron Stars
Discussion of what happens when neutron stars collide.

Deep Space Atomic Clock Ticks Toward Success
Dr. Todd Ely, principal investigator for NASA's Deep Space Atomic Clock at the Jet Propulsion Laboratory in Pasadena, Calif., spotlights the paradigm-busting innovations now in development to revolutionize spaceflight navigation. The Deep Space Atomic Clock project is one of nine critical Technology Demonstration Missions now under way across the agency -- bridging the gap between laboratory development of valuable new technologies and full-scale testing in the space environment. (NASA/JPL)

Einstein's Cosmic Speed Limit
When it comes to the structure of space and time, could light be the key to unlocking the final secrets of the universe?

Great Observatories Find Candidate for Most Distant Object
The newly discovered galaxy, named MACS0647-JD, is very young and only a tiny fraction of the size of our Milky Way. The object is observed 420 million years after the big bang.

Measuring Ripples in Space-Time
Einstein predicted gravity waves in his general theory of relativity, but to date these ripples in the fabric of space-time have never been observed. Now a scientific research technique called Atomic Interferometry is trying to re-write the canon. In conjunction with researchers at Stanford University, scientists at NASA Goddard are developing a system to measure the faint gravitational vibrations generated by movement of massive objects in the universe. The scientific payoff could be important, helping better clarify key issues in our understanding of cosmology. But application payoff could be substantial, too, with the potential to develop profound advances in fields like geolocation and timekeeping. In this video we examine how the system would work, and the scientific underpinnings of the research effort.

Study Finds Surprising Trend in Galaxy Evolution
A study of 544 star-forming galaxies observed by the Keck and Hubble telescopes shows that disk galaxies like our own Milky Way unexpectedly reached their current state long after much of the universe's star formation had ceased. Over the past 8 billion years, the galaxies lose chaotic motions and spin faster as they develop into settled disk galaxies. Credit: NASA's Goddard Space Flight Center

Tiny Galaxies Help Fermi Address a Big Mystery
No one knows what dark matter is, but it constitutes 80 percent of the matter in our universe. By studying numerous dwarf galaxies -- satellite systems that orbit our own Milky Way galaxy -- NASA's Fermi Gamma-ray Space Telescope has produced some of the strongest limits yet on the nature of the hypothetical particles suspected of making up dark matter.

Webb Telescope- Evolution of the Universe
Galaxies congregate in clusters and superclusters, and at larger scales superclusters seem to blend into chains and filaments that span vast distances. This so-called cosmic web seems to be the foundation on which the universe is built. Webb will explore how stars, young galaxies and dark matter worked to create large-scale cosmic structure.

WMAP- From the Archives
On June 20, 2012, Dr. Charles Bennett and the WMAP science team were awarded the 2012 Gruber Cosmology Prize. The Wilkinson Microwave Anisotropy Probe (WMAP) was launched by NASA to measure the universe’s oldest light. By making precise measurements of temperature patterns in this light, WMAP has answered many longstanding questions about the universe's age, composition and development.