Einstein wins again: Exotic gravity theories take a blow from new observation. DESI has allowed astronomers to create an unprecedented 3D map of the Universe representing 20% of the entire sky.

 

Einstein wins again: Exotic gravity theories take a blow from new observation.

DESI has allowed astronomers to create an unprecedented 3D map of the Universe representing 20% of the entire sky.

Key Takeaways

• Astronomers still struggle to understand phenomena that contradict our current understanding of gravity and the distribution of matter in the Universe.
• The most popular explanation for these observations is dark matter — but since it has not been directly observed, some scientists favor alternative explanations, including the possibility that our widely accepted laws of physics are wrong or incomplete.
• Recent observations from the Dark Energy Spectroscopic Instrument provided a perfect testbed to make progress in solving the puzzle.