A powerful new observatory is the best hope yet for finding the elusive Planet 9, a large planet that some scientists say is ...

Astronomers have long suspected that an enormous, unseen planet is hiding somewhere far beyond Neptune, quietly shaping the ...

Jupiter: It is the largest planet of the solar system. It takes 11 years and 11 months for one orbit around the Sun and 9 hours, 56 minutes for one spin on its axis. It has 16 satellites.

And in the past decade, more than 20 spacecraft have ventured into the deepest reaches of our solar system ... and there's ice there today. In the nine years before it lost contact in 2006 ...

For example, if your home used 30,000 kWh last year, you would need a 25-kW system. Solar panels are designed to last 25 to 30 years, and your roof needs to last just as long. We recommend taking ...

The solar system is made up ... as Jupiter and has 82 moons. It has a system of rings orbiting around it, which are made up of rock and icy debris. A year is the length of time it takes a planet ...