Inner planets are the four planets closest to the Sun: Mercury, Venus, Earth and Mars. They are collectively characterized by a solid surface and small size relative to the outer gas giants.

The colored lines are the orbits of two planets. The yellow one is the outer, and it is highly inclined. The inner one is the red one. As time passes, the orbit becomes more and more stretched ...

Matt DiNicolantonio is joined by science writer Scott Sutherland to talk about the planets visible in the sky since ancient times. Trump downplays business concerns about uncertainty from his ...

What is Planet Position in Astrology? Planet position is a diagrammatic representation of the condition and positions of the celestial bodies at any given time for any given location on Earth. Planet ...

What's more, the two planets orbit in a configuration close to a 3:2 resonance, meaning that for every three orbits of the inner planet, the outer planet completes almost exactly two. Such ...

On Feb. 28, a stellar alignment of planets will illuminate the night sky for the last time in a decade Space Frontiers/Hulton Archive/Getty Calling all stargazers and astronomy enthusiasts ...

By Katrina Miller Astute skywatchers may have already seen the striking line of planets across the night sky in January. This week Mercury joins the queue. Now every other world in our solar ...

Planet Money Wanna see a trick? Give us any topic and we can tie it back to the economy. At Planet Money, we explore the forces that shape our lives and bring you along for the ride.Don't just ...

In the eyes of the general public, it typically means that we can see multiple planets at once. Interestingly, they'll always appear along the same arc in the night sky. That path is called the ...

Seeing all the naked eye planets at once is set to become a rarity in coming years. In any event, here's a tour of the planets at dusk for the remainder of February into early March from the inner ...

Skywatchers will get a cosmic treat this week with a celestial gathering of planets. A planetary alignment, or a "planet parade," according to the internet, will grace our night sky just after ...