Flat-earthers, don't feel vindicated. The flatness problem of the universe, whose nature is beyond the anti-intellectuals' grasp, is a cosmological puzzle that extrapolated from the Big Bang model.

The early universe experienced a phase of rapid expansion, known as inflation. For decades, cosmologists assumed that this expansion was powered by a new entity in the universe, known as the inflaton.

The Big Bang Theory only gets us part of the way there. Although much of the Big Bang Theory is widely accepted to be true, it only gets us part of the way there. Observable truths such as the CMB and ...

Just over 40 years ago, a new theory about the early universe provided a way to tackle multiple cosmological conundrums at once. For Alan Guth, insight into the origins of the universe started in a ...

The widely accepted cosmological model begins with the Big Bang, followed by a rapid phase of inflationary expansion. This theory aligns well with observations of the cosmos such as the cosmic ...

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Our model of the universe envisions a cosmos that is expanding faster and faster – one that it is essentially flat at scales much larger than superclusters of galaxies. This is an assumption backed by ...

Paul M. Sutter is an astrophysicist at The Ohio State University, host of Ask a Spaceman and Space Radio, and author of "Your Place in the Universe." Sutter contributed this article to Space.com's ...