Mars, Venus, Jupiter and Saturn should be visible to the naked eye, but with a telescope you can spot Neptune and Uranus.

However, this year a powerful new telescope is coming online that could prove once and for all that there really is a ninth planet in our Solar System. The same year that Pluto was ignominiously ...

All seven of the other planets in our solar system are about to become visible at once in a great planetary alignment – ...

"There are still many things related to planetary formation and the early evolution of young planetary systems that we don't understand." The discovery of an extraordinary multi-planet system has ...

17 and 18. Timing: Dusk after sunset, but before 9 p.m. local time There are eight planets in our solar system and one dwarf planet (Pluto). Because we live on Earth, the most we could see is a ...