“The cosmos is also within us, we're made of star-stuff. We are a way for the cosmos to know itself.” - Carl Sagan Compared to the Sun, how big is the Earth? What is a scale model and how does it help ...

Dark-energy evidence suggests the universe will end in a “big crunch” roughly 20 billion years from now. The universe is nearing the halfway point of what may be a 33-billion-year lifespan, according ...

Dark energy is one of the most mysterious concepts in all of the cosmos. We know very little about what it is but it just might play an overwhelming role in the death of the universe. Often referred ...

A controversial new theory about how the universe began rejects the widely-held belief that it started with a giant cosmic eruption known as the Big Bang. One scientist suggests that the cosmos grew ...

Breakthroughs, discoveries, and DIY tips sent every weekday. Terms of Service and Privacy Policy. Our vast universe might not be infinitely expanding after all. Some ...

No one knows what kicked off the Big Bang that eventually allowed the stars to begin forming. Adolf Schaller for STScI, CC BY How can a Big Bang have been the start of the universe, since intense ...

Observations by the keen-eyed Webb Space Telescope have revealed a huge galaxy in the distant—which is to say early—universe. The galaxy is a vibrant orange disk, dubbed the Big Wheel. Its life began ...

"Challenging long-held assumptions is essential to scientific progress." A team of scientists is proposing a bold alternative to the Big Bang theory, suggesting that our universe may have formed ...