We're closing in on one of the most important numbers in the universe.
Not everyone thinks the universe had a beginning.
New observations nudge the Universe's timeline
Plus, an ancient rodent that had a big bite
Popular Science spoke with Rick DeLano, whose movie The Principle shows the world's most famous cosmologists promoting the idea that the Earth is the center of the universe.
Dark matter makes up much of the cosmos, yet no one knows exactly what it is. Soon, physicists may finally solve one of science's biggest mysteries.
Jonathan Feldschuh's work remixes data from Europe's Planck satellite.
Also, the universe's age has now been measured at 13.8 billion years old.
Dust may help astronomers understand the formation of stars and planets
Physicists are increasingly certain a mysterious force is driving the universe apart. If only they knew what it was.
These ten awe-inspiring science projects range from the world's largest undersea observatory to the "ultimate microscope" to a Jupiter orbiter on a suicide mission--but they're all massive, often in both size and scope
Our experts tackle your toughest science questions
Some scientific debate heats up online.
A frothy moat, not a shield, protects us from cosmic rays
Invisibility is a staple of science fiction, from H.G. Wells to Romulans. Now scientists see a way to make objects disappear
Earth's biggest astronomy machine, inaugurated last week, will see farther into the past than ever before.
Dark energy, gravitational waves, and black holes may be just the beginning