The atmosphere, a thin veil of molecules enveloping Earth, reaches about 20 miles (32 kilometers) above the planet's surface.

Scientists are challenging the existence of dark energy with a new model called "timescape," which suggests the Universe's ...

A new underground facility called DUNE, which will accelerate particles for 800 miles between Illinois and South Dakota, ...

New observations from the James Webb Space Telescope back up previous findings from the Hubble telescope that contradict theoretical predictions, suggesting the standard model theorists work from ...

The universe’s expansion rate is expressed in kilometers per second per megaparsec. (A megaparsec equals 3.26 million light-years.) Widely accepted cosmology models have used light from the ...

It instead supports a different model of cosmic expansion that suggests the unusual results seen in the way light stretches are a result not of how the universe is expanding but the way we think ...

This late-time acceleration was discovered in 1998 by two teams of astronomers making distance measurements using supernovas ...

Dark matter is one of the most debated and intriguing missing puzzle pieces of modern physics – a mysterious form of energy ...

"Dark energy is a misidentification of variations in the kinetic energy of expansion, which is not uniform in a Universe as ...

But the model also has to account for the cosmic microwave background and the change in the universe's rate of expansion. Therein lies the rub. Different observational sources also give slightly ...

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