Last week, scientists from the Laser Interferometer Gravitational-Wave Observatory announced that towards the end of last year they had finally detected a gravitational wave – a wrinkle in space-time.
Two scientists from CalTech have published a paper offering a potential explanation for some odd orbits in the outer solar system: there may be another planet out there.
For over half a century, astronomers searched for (and sometimes “found”) a planet that doesn’t exist. In “The Hunt for Vulcan,” Thomas Levenson tells the story the false planet and the people who pursued it.
Billions of kilometers away, Pluto and Charon dance slow circles around each other. But neither is really in the center; they both orbit an empty point in space. Why?