The universe is approaching the midpoint of its 33-billion-year lifespan, a Cornell physicist calculates with new data from ...
Scientists figured out that the universe is billions of years old - after years of reading ancient rocks and dying stars, and ...
On human timescales, the universe may as well be eternal. It’ll be here long after our species and our planet are gone, but ...
We’ve grown up with the idea that the universe will expand forever, meaning the "cosmological constant" is positive. What if it's negative?
Astrophysicists have presumed for nearly a century that the universe will just keep expanding for all eternity, driven by an ...
HD 140283, better known as the Methuselah star, is around 200 light-years from Earth, in the constellation of Libra. It is ...
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