Kosmiska tomrum, som en gång betraktades som tomma utrymmen mellan galaxer, får nu ökad uppmärksamhet som potentiella nycklar till att förstå mörk energi och mörk materia.
Rymden innehåller enorma regioner som i stort sett är fria från materia, kända som kosmiska tomrum. Dessa områden ligger mellan de täta trådar som bildar det kosmiska nätet.
Astronomers using NASA’s James Webb Space Telescope have produced the most detailed map yet of the universe’s cosmic web, the vast network of dark matter and gas that links galaxies. The map traces structures back to when the universe was roughly one billion years old.
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Active galactic nuclei could be sites of massive planet formation, according to new models. Researchers suggest millions of worlds, some unusually large, may arise in the dusty discs surrounding supermassive black holes.
A recent challenge to the existence of dark energy has been resolved, with astronomers confirming that the universe continues to expand at an accelerating rate. Researchers at the University of Southampton reexamined supernova data and found no flaws in the standard measurements.
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Scientists at Brown University have proposed a topological explanation for why the cosmological constant remains small despite predictions from quantum field theory. The study connects quantum gravity to the quantum Hall effect. It was published recently in Physical Review Letters.