Earth has four seasons, but do other planets in our solar system also have hot summer days and cold winter nights?

In April, astronomers said they had detected a possible signature of life on the exoplanet K2-18b. Now, three independent ...

The finding points toward two different pathways by which large and small planets form. "What we found is that right around the size of Neptune, planets go from being almost always on circular ...

The alignment formation, however, will be short-lived because each planet moves at a different speed. On Friday, seven planets – Saturn, Mercury, Neptune, Venus, Uranus, Jupiter and Mars ...

The excitement comes with some controversy — different camps have competing theories about the planet itself while some researchers believe it doesn’t exist at all. “There are definitely ...