How Hot Was the Universe 7 Billion Years Ago? Scientists Now Have an Answer

Published

3 days ago

November 5, 2025

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Japanese astronomers using ALMA data have found the universe was about twice as hot 7 billion years ago, with a temperature of 5.13 K compared to today’s 2.7 K. The finding aligns perfectly with Big Bang predictions that the Universe cools as it expands, providing the most precise mid-epoch measurement yet and reinforcing confidence in standard cosmology.

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Mystery Deepens as Interstellar Comet 3I/ATLAS Brightens Unexpectedly Near the Sun

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23 hours ago

November 6, 2025

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Interstellar comet 3I/ATLAS defied expectations during its 2025 solar flyby, brightening far faster than predicted. Observatories worldwide recorded a blue coma rich in exotic gases, suggesting unique chemistry from another star system. Scientists are investigating whether its unusual composition or speed caused the outburst, marking a new interstellar mystery.

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Is the Universe Slowing Down? Astronomers Detect Signs of Fading Dark Energy

Published

1 day ago

November 6, 2025

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Astronomers from Yonsei University and DESI data analyses indicate dark energy, long believed constant, may be weakening. Corrected supernova results hint that cosmic acceleration is slowing—a possible “cosmic slowdown.” If true, this could help resolve the Hubble tension and redefine how the universe’s expansion and ultimate fate are understood.

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Scientists Create Bullet-Proof Fiber Stronger and Thinner Than Kevlar

Published

1 day ago

November 6, 2025

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Researchers have created a new fiber that surpasses Kevlar in bullet-stopping power while being much thinner. Made by aligning advanced aramid chains with carbon nanotubes, the material absorbs over twice as much energy as previous record-holding fibers. The breakthrough could lead to lighter, stronger armor for military, law enforcement and personal safety uses.