An expanding universe complicates this picture just a little bit, because the universe absolutely refuses to be ...

Whether the Universe will 'end' at all is not certain, but all evidence suggests it will continue being humanity's cosmic ...

Scientists have many big questions to tackle about the universe, including how big it actually is. But even the proposed ...

The surface of Earth is finite. We can measure it. If it was expanding, then its size would grow with time. And once again, good ol' Earth helps us understand what the universe might be doing beyond ...

The size of the universe depends on its shape, with possibilities ranging from finite and spherical to flat or even infinite.

A new study casts doubt on the universe’s accelerating expansion, suggesting dark energy might be weakening over time.

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 ...

Alfredo has a PhD in Astrophysics and a Master's in Quantum Fields and Fundamental Forces from Imperial College London.View full profile Alfredo has a PhD in Astrophysics and a Master's in Quantum ...

Calculating the total mass of the universe is not simple, because most of the mass is invisible. In a pie chart of the contents of the universe, only 5 percent is normal matter, atoms that make up all ...