When discussing the scale of the universe, we’re immediately faced with an intriguing question: are we tiny beings, or is the ...

“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 ...

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 ...

A discovery of binary stars could be the first step in building a more complete picture of how our galaxy formed, according ...

Cosmic inflation tries to describe one brief but crucial phase in the Big Bang that launched the universe onto its expansion course. Credit: Christine Daniloff / MIT / ESA / Hubble / NASA Many ...

According to the equations that govern black holes, the larger one of these cosmic behemoths is the lower its average density ...

Curious Kids is a series for children of all ages. If you have a question you’d like an expert to answer, send it to [email protected]. How can a Big Bang have been the start of the ...