The shape of a planet's orbit is one of its fundamental properties, along with its size and distance from its host star.

The solar system continues to intrigue scientists and space enthusiasts alike, with each discovery unfolding new secrets ...

Our grade school understanding of the Solar System may not take into account the constant discoveries being made in our ...

"An epic exploration of possibilities. What If is a Webby Award-winning science web series that takes you on a journey ...

A very rare treat is about to grace Earth's night skies.

Let’s break down the astrology of the “parade of planets.” Saturn, Mercury and Neptune are currently in Pisces, making it ...

Mercury, Venus, Mars, Jupiter, Saturn, Uranus and Neptune will all be visible in the night sky this Friday for a short window ...

Take advantage of a special 6-7 planet alignment from Earth's perspective. Planets 'line up' in the skies over California in February.

Saturn, Venus, Neptune, Uranus, Jupiter, Mars and Mercury will be visible in an uncommon planetary alignment this month.

Feb. 18 marks the 95th anniversary of the discovery of our outermost planet-not-planet. Here's what to know about the short ...

It doesn't happen very often, but all of the other planets in our solar system will be visible in the same sky tonight, if you know where to ...

In the skies over the world around our planet yesterday, a rare phenomenon galvanised professional star-gazers to set up ...