Our solar system may have a ninth planet after all, following the declassification of Pluto nearly two decades ago, ...

Astronomers have detected a promising sign of a ninth planet lurking at the the farthest reaches of the Solar System.

ClockworkThe old models called orreries depicted an ever predictable solar system. The real one is more random: Moving a pencil across your desk today, says one astronomer, can shift Jupiter ...

"This measurement of the planet population from planets somewhat larger than Earth all the way to the size of Jupiter and ...

Some Utahns got a glimpse of a real phenomenon Saturday night: a meteor barreling through the Earth's atmosphere — so big that our NASA solar system ambassador called it a fireball.

Learn about the solar system from a pair of real space museum curators in sci-fi game Elite Dangerous, as Abbie MacKinnon and ...

"Our electric bill went from $500/month to $150. Amazing relief." Solar panel owners open up about savings after curious ...

Once you've broken even, the real savings can start ... Here's another look at the formula: (Total solar system costs - rebates) / Electricity bill savings per year = Payback period in years ...

Reference Explore the eight (or nine) planets of the solar system in order from nearest to the sun and discover the many wonders of our solar system along the way. An object seen to have moved in the ...