Millennium Simulation News Today

We think the universe is 13.8 billion years old, but could we be wrong? A new study of bound galaxies offers an unexplored clue.

The motions of satellites in galaxy groups tell us that such groupings, and therefore possibly the universe, are younger than what standard cosmology tells us.

The motions of satellites in galaxy groups tell us that such groupings, and therefore possibly the universe, are younger than what standard cosmology tells us.

When we gaze out into the cosmos beyond the borders of the Milky Way, we behold multitudes.

The new model, named FLAMINGO, is the largest simulation of the universe to take into account the effects of dark matter and ordinary matter.

All of the matter and radiation we measure today originated in a hot Big Bang long ago. The Universe was never empty, not even before that.

Studying the very distant Universe is hard. That’s because — not to be too on the nose about it — it’s far away.

Astronomers have been facing a big problem in cosmology — the study of the formation and behavior of the Universe itself — for a while now. Literally the biggest: Where do the most supermassive black holes come from? 

In 2018, astronomers faced a fundamental problem: A group mapping relatively nearby galaxies found two very small ones that apparently were totally lacking in dark matter. I know that sounds a little esoteric, but it's as shocking to astronomers as finding human bones next to dinosaur bones in a dig would be to a paleontologist. They shouldn't be there.

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