Both perspectives are valid. In physics, duality is when a single physical system can be described with two completely different sets of equations. Invariably, when physicists encounter such a ...

These two exoplanets, a super-Earth and a sub-Neptune, are common in the galaxy, yet are absent from our system. This discovery paves the way for future atmospheric studies to better understand ...

Using Einstein's theories of relativity, Freidmann showed that the characteristics of an expanding universe could be expressed from the Big Bang onward using two equations. Most people are ...

The six found so far are roughly two to three times the size of Earth, but with densities closer to the gas giants in our own solar system. Pitts said most of the planets are smaller than Neptune.

Around this star are two planets, a super-Earth and a sub-Neptune. These are types of planets that are absent from our own ...