Invisible dark matter in the universe | Jo Dunkley

Описание: If dark matter is a new kind of particle, it can travel through our body, through anything. It doesn't interact with the regular atoms we know of. It does obey the law of gravity.

About Jo Dunkley
"​​​​​​I am the Joseph Henry Professor of Physics ​and Astrophysical Sciences at Princeton University. I am a 2015 Philip Leverhulme Prize Winner.
​My research is in cosmology, studying the origins and evolution of the Universe. My major projects are the Atacama Cosmology Telescope and the Simons Observatory. I have been the analysis leader for ACT for the past few years, and am currently the Spokesperson of the Simons Observatory. I am a Fellow of the Royal Society."

Key Points
• Dark matter makes up roughly five times more mass than visible matter, influencing cosmic structures through gravity while remaining invisible to light.
• Astronomer Vera Rubin’s measurements of unexpectedly fast star rotations in spiral galaxies provided decisive evidence that massive dark matter halos surround galaxies.
• Modern projects like the Atacama Cosmology Telescope map dark matter by tracking how it bends the cosmic microwave background, turning long-duration sky scans into detailed mass maps.
• The new maps match the standard cosmological model, confirming dark matter’s gravitational behavior, but scientists still do not know the particle’s identity or the nature of dark energy.