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Astronomers have long known the universe is expanding--but exactly how fast remains one of the biggest mysteries in cosmology. Different techniques for measuring the Hubble constant stubbornly disagree, creating the so-called "Hubble tension." Now .. ...

Jupiter's icy moons may have been seeded with the chemical ingredients for life from the very beginning. An international team of scientists modeled how complex organic molecules--essential building blocks for biology--could have formed in the ...

Scientists have built a massive cellular atlas showing how aging reshapes the body across 21 organs. Studying nearly 7 million cells, they found that aging starts earlier than expected and unfolds in a coordinated way throughout the body. About a ...

Sponges may be ancient, but their timeline has been murky. New research suggests the earliest sponges were soft and skeleton-free, explaining why their fossils don't appear until much later. By analyzing hundreds of genes and modeling how skeletons . ...

Scientists have uncovered a surprising new way that giant embryonic cells divide--without relying on the classic "purse-string" ring long thought essential for splitting a cell in two. Studying zebrafish embryos, researchers found that instead of ...

Drug-resistant bacteria are becoming harder to treat, pushing scientists to look for new antibiotic targets. Researchers have now discovered that several unrelated viruses disable a key bacterial protein called MurJ, which is essential for building . ...

Scientists at Texas A&M are turning an everyday pick-me-up into a high-tech medical switch. By combining caffeine with CRISPR gene editing, researchers have created a system that allows cells to be programmed in advance -- and then activated simply . ...

Scientists at UC Berkeley have discovered a microbe that bends one of biology's most sacred rules. Instead of treating a specific three-letter DNA code as a clear "stop" signal, this methane-producing archaeon sometimes reads it as a green light- ...

Astronomers have spotted what may be one of the universe's earliest barred spiral galaxies -- a striking cosmic structure forming just 2 billion years after the Big Bang. The galaxy, COSMOS-74706, dates back about 11.5 billion years and contains a .. ...

Saturn's largest moon, Titan, may have been born in a colossal cosmic crash. New research suggests Titan formed when two older moons slammed together hundreds of millions of years ago--an event so violent it reshaped Saturn's entire moon system and . ...