2025's Major Physics Breakthroughs π
In 2025, physicists uncovered a new black hole, explored dark energy, and revealed insights into Earth's deep interior.

Quanta Magazine
1.8M views β’ Dec 17, 2025

About this video
In 2025, physicists spotted a paradigm-shifting new black hole, doubled down on weakening dark energy, and discovered that the Earth's deep interior may be more connected than previously thought, reshaping our picture of the planetβs engine. Watch this year's Biggest Breakthroughs in Mathematics: https://youtu.be/hRpcWpAeWng
0:00 - Little Red Dots
The James Webb Space Telescope has found a lonely black hole in the early universe thatβs as heavy as 50 million suns. A major discovery, the object confounds theories of the young cosmos.
Read more at Quanta Magazine: https://www.quantamagazine.org/a-single-naked-black-hole-rewrites-the-history-of-the-universe-20250912/
Associated paper: https://arxiv.org/abs/2508.21748
04:36 - Weakening Dark Energy
Last year, an enormous map of the cosmos hinted that the engine driving cosmic expansion might be sputtering. Now, physicists are back with an even bigger map, and a stronger conclusion.
Read more at Quanta Magazine: https://www.quantamagazine.org/is-dark-energy-getting-weaker-new-evidence-strengthens-the-case-20250319/
Associated paper: https://arxiv.org/abs/2503.14738
9:51 - Geophysics of Earth's Core
Strong new evidence suggests that primordial material from the planetβs center is somehow making its way out. Continent-size entities anchored to the core-mantle boundary might be involved.
Read more at Quanta Magazine: https://www.quantamagazine.org/earths-core-appears-to-be-leaking-up-and-out-of-earths-surface-20250804/
Associated papers: https://www.nature.com/articles/s41586-024-08322-y, https://www.nature.com/articles/s41586-025-09003-0
---------
Quanta Magazine is an editorially independent publication supported by the Simons Foundation. We focus on developments in mathematics, theoretical physics, theoretical computer science and the basic life sciences.
0:00 - Little Red Dots
The James Webb Space Telescope has found a lonely black hole in the early universe thatβs as heavy as 50 million suns. A major discovery, the object confounds theories of the young cosmos.
Read more at Quanta Magazine: https://www.quantamagazine.org/a-single-naked-black-hole-rewrites-the-history-of-the-universe-20250912/
Associated paper: https://arxiv.org/abs/2508.21748
04:36 - Weakening Dark Energy
Last year, an enormous map of the cosmos hinted that the engine driving cosmic expansion might be sputtering. Now, physicists are back with an even bigger map, and a stronger conclusion.
Read more at Quanta Magazine: https://www.quantamagazine.org/is-dark-energy-getting-weaker-new-evidence-strengthens-the-case-20250319/
Associated paper: https://arxiv.org/abs/2503.14738
9:51 - Geophysics of Earth's Core
Strong new evidence suggests that primordial material from the planetβs center is somehow making its way out. Continent-size entities anchored to the core-mantle boundary might be involved.
Read more at Quanta Magazine: https://www.quantamagazine.org/earths-core-appears-to-be-leaking-up-and-out-of-earths-surface-20250804/
Associated papers: https://www.nature.com/articles/s41586-024-08322-y, https://www.nature.com/articles/s41586-025-09003-0
---------
Quanta Magazine is an editorially independent publication supported by the Simons Foundation. We focus on developments in mathematics, theoretical physics, theoretical computer science and the basic life sciences.
Tags and Topics
Browse our collection to discover more content in these categories.
Video Information
Views
1.8M
Likes
28.8K
Duration
15:46
Published
Dec 17, 2025
User Reviews
4.8
(363) Related Trending Topics
LIVE TRENDSRelated trending topics. Click any trend to explore more videos.
Trending Now