The Cosmic Microwave Background, or CMB, was imprinted on the sky when the universe was young.

What does the universe look like?

It looks, it turns out, a little something like the image above -- a map that details what NASA is calling "the oldest light in our universe." That light, the Cosmic Microwave Background, or CMB, was imprinted on the sky when the universe was young (it was, essentially, the glowing aftermath of the Big Bang). And it has now been detected with the greatest precision ever achieved by a collaboration among Earth's science agencies.

That effort, the Planck mission, was launched in May 2009 and is headed by the European Space Agency -- but it also includes significant participation from Canadian researchers and from NASA (through its Jet Propulsion Laboratory). The project has been measuring the CMB -- which is otherwise known as the thermal radiation that fills the observable universe -- over a broad range of far-infrared wavelengths. And it's been doing that work with one of the broadest goals imaginable: solving mysteries about the early history and the later development of the cosmic stew we call home.

Today, the Planck mission made a big announcement: The universe, it turns out, is 13.8 billion years old -- 100 million years older than we previously thought. And it's also expanding more slowly than we previously thought. Oh, AND: It seems to have less dark energy, and more matter (of both the normal and dark varieties) than we previously realized. 

The Planck discoveries, in all, significantly alter our understanding of the universe.

And the map above is a significant aspect of that alteration. It depicts minute temperature fluctuations that correspond to regions of the universe that have slightly different densities, representing what NASA calls, poetically, "the seeds of all future structure: the stars and galaxies of today." In that, the map reveals patterns of light that scientists can, in turn, use to augment our current knowledge of the universe even further -- so we can better understand its origins, its contents, and, just maybe, its fate.

[For more on the Planck findings, here's NASA's detail of them. And, for the especially bold/motivated/nerdy, here are the Planck papers themselves.]

This post originally appeared on The Atlantic.

About the Author

Most Popular

  1. A person tapes an eviction notice to the door of an apartment.
    Equity

    Why Landlords File for Eviction (Hint: It’s Usually Not to Evict)

    Most of the time, a new study finds, landlords file for eviction because it tilts the power dynamic in their favor—not because they want to eject their tenants.

  2. a photo collage of 2020 presidential candidates.
    Equity

    Will Housing Swing the 2020 Election?

    Among Democratic candidates for president, the politics of America’s housing affordability crisis are getting complicated. Just wait until Trump barges in.

  3. Environment

    Paris Wants to Grow ‘Urban Forests’ at Famous Landmarks

    The city plans to fill some small but treasured sites with trees—a climate strategy that may also change the way Paris frames its architectural heritage.

  4. A house with a for sale sign.
    Perspective

    Why Are Zoning Laws Defining What Constitutes a Family?

    It’s wrong to exclude safe uses of housing because of who belongs to a household. Like family law, zoning ordinances should prioritize functional families.

  5. At an NBA game, a player attempts to block a player from the rival team who has the ball.
    Life

    NBA Free Agents Cluster in Superstar Cities, Too

    Pro basketball follows the winner-take-all geography of America as a whole, with free agents gravitating to New York, L.A., and other big cities.

×