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How old is the universe—and how fast is it expanding? These are part of one of the biggest—and most contested—questions in science, and the answers could change our understanding of physics.
A Universe that is closed (cyan) or critical and matter-dominated (green) will have a very short lifetime: 10 billion years or less.
Eventually, 100 trillion years from now, all star formation will cease, ending the Stelliferous Era that’s be running since not long after our universe first formed. How did we discover...
How old is the universe—and how fast is it expanding? These are part of one of the biggest—and most contested—questions in science, and the answers could change our understanding of physics. In this episode, we talk with renowned UChicago astronomer Wendy Freedman, who’s spent decades trying to solve these very questions.
In 2021, thanks to new techniques and advances in technology, the age of our universe was thus estimated at 13.797 billion years using the Lambda-CDM concordance model.
This earliest high-α disk has built a total stellar mass of 3.7 × 10 9 M⊙, as of 13 Gyr ago. Of this initial mass, 2.2 × 10 9 M⊙ remain as of now, after considering the mass loss by stellar ...
Our cosmos is currently 13.77 billion years old, and galaxies throughout the universe will continue making new stars for many years to come. But eventually—roughly one trillion years from...
My research proposes a model that determines the universe's age to be 26.7 billion years, which accounts for the JWST's "impossible early galaxy" observations.
The galaxy suddenly and mysteriously halted star formation when the universe was just 700 million years old, when countless stars were birthing thanks to an abundance of pristine gas and...
The known laws of physics suggest that by about 10 100 (the No. 1 followed by 100 zeros) years from now, star birth will cease, galaxies will go dark, and even black holes will evaporate through a process known as Hawking radiation, leaving little more than simple subatomic particles and energy.