The solar system is a dynamic place, and objects located 180° from a planet don’t stay that far from the planet for long. The reason is the differences in their orbits. Orbits come in all shapes and ...

We often hear about the number of objects that are whizzing around our planet, but it’s rare that we actually get to see the situation for ourselves. NASA released a decent visualization a couple of ...

Right angle Illustration of 2M1510 showing the orbits of the two brown dwarfs (in blue) and that of the planet (in orange). (Courtesy: ESO/L Calçada) The first strong evidence for an exoplanet with an ...

To be a planet, NASA says an object must be big enough that its gravity has cleared away any other objects of a similar size near its orbit around the Sun. I can understand how something can clear ...