‘Funny dark matter:’ Something is wrong about our theory of the expanding universe
Ever since the early 20th century, we’ve known that the universe is expanding. Exactly how quickly it’s expanding, however, remains...
dark matter
What is matter? It’s not as basic as you’d think.
A little less than one-third of the universe—around 31 percent—consists of matter. A new calculation confirms that number; astrophysicists have...
