What Is Dark Matter? The Universe's Missing Mass
Dark matter is an invisible form of mass that appears to outweigh ordinary matter several times over. We infer it from gravity, yet it has…
Dr. Nadia Okoro
413 reading now
#Universe
Stories tagged “Universe”.
3 stories
The Big Bang, Explained
The Big Bang is the leading scientific explanation for how the universe began: not an explosion in space, but the expansion of space itself…
Dr. Nadia Okoro
428 reading now
What Is a Galaxy?
A galaxy is an enormous, gravity-bound system of stars, gas, dust and dark matter. This guide explains what galaxies are made of, the main…
Dr. Nadia Okoro
441 reading now