The blobs are out there. Probably.

Astronomers have created a 3D map of the unseeable dark matter in the universe, using Hubble Telescope data. What would a visual map of invisible matter look like, you may be wondering. Something like this (click the image for the full-size picture).

The three-dimensional map spans not only space, but also time, and stretches back to when the universe was only about half its present age. [...] Dark matter is distributed across the universe in thick clumps and fat filaments within which galaxies are anchored like set jewels. The map relied on data collected from more than half a million galaxies and spans a swath of the night sky that is nearly nine times the diameter of the full Moon. [...]

The new map reveals that as time passed, from the early universe to the more recent universe, dark matter became clumpier and less filamentary. This agrees with some current theories which state that the universe transitioned from a state in which matter—regular and dark—was relatively smoothly distributed to its current state, in which matter is more concentrated in some places than others. It is in these areas of high matter concentration that stars, galaxies and galaxy clusters reside. According to those same theories, dark matter began to coalesce into larger structures a little before normal matter did.

"It collapsed first into these filaments and clusters and provided the gravitational scaffolding into which normal matter—galaxies, planets, us—flowed," Massey said. "It's only because there's a lot of dark matter and it collapsed first that we can exist at all."