Latest about expert voices paul sutter
We can build a real, traversable wormhole … if the universe has extra dimensions
It may be possible to build a real, traversable wormhole, but only if our universe has extra dimensions, a team of physicists has found.
Our universe may have a twin that runs backward in time
A mirror universe that runs backward in time sprouted up before the Big Bang.
Life as we know it would not exist without this highly unusual number
The fine-structure constant is a seemingly random number with no units or dimensions, which has cropped up in so many places in physics, and seems to control one of the most fundamental interactions in the universe.
Will our solar system survive the death of our sun?
Our sun's death is a long way off — about 4.5 billion years, give or take — but someday it's going to happen, and what then for our solar system?
How much of the solar system is made of interstellar stuff?
The detection of interstellar objects in the solar system has raised an interesting question: How much of the solar system is made of foreign material?
Strange dwarf planet Ceres may have formed at the icy edges of the solar system
Ceres is the most dominant member of the asteroid belt but it doesn't look like the other asteroids.
What black holes can teach us about traffic jams
If you've ever been stuck in a nightmare traffic jam, you know that "black hole from which you can never escape" captures the feeling well.
Mysterious globular clusters could unlock the secrets of galaxy formation
Globular clusters are like astronomical coelacanths — mysterious living fossils. These densely packed collections of ancient stars may hold the ultimate secrets to the formation of galaxies.
