Its mass is approximately 4.5 times the mass of the Sun. Although most stars are much larger than planets, there are some planets that boast impressive size as well. Start the day smarter.

Now, even though one planet is “smaller scale,” the amount of detail may even be more intense, judging by what we’ve seen, and the goal is to make a planet full of unexpected adventures ...

In 1964, Kardashev published a paper proposing a way to categorize a planet's energy use, a system that has come to be known ...

Planets in the box have the right atmospheric ... The cold gas giants are literally off the chart. The logarithmic scale used initially here allows for an easier comparison of the exoplanets.

All five planets will be spread out along the ecliptic—the plane of the solar system upon which all planets orbit closely to. Be outside looking east at around 5:00 a.m. and you’ll see Jupiter ...