What If on MSN

How many Earth-sized planets fit inside the solar system’s giants?

The Solar System is far more diverse in size than it appears from Earth. From tiny rocky worlds to massive gas giants, each ...
BeckBroJack on MSN

I found and destroyed Solar Smash’s secret planets

Solar Smash hides more secrets than you’d expect. In this video, we uncover hidden planets and test what happens when they’re ...
Yahoo

The Solar System May Have Lost 2 Planets, And The Mystery Just Deepened

Add Yahoo as a preferred source to see more of our stories on Google. (Ianm35/iStock/Getty Images Plus) The Solar System is one of the comforting constants of human existence. No matter what else we ...
autoevolution

Space Telescope Stumbles Upon Two Cotton Candy Planets the Size of Jupiter

The planets are extremely large, with TOI-791 b being about the same size as Jupiter, and TOI-791 c even larger. Yet, they ...

Planet orbits so close to its star that their magnetic fields connect

At the right point of the orbit and stellar cycle, the star’s chromosphere brightens.
New Scientist

How to see six planets in the sky at once in rare celestial alignment

Nearly all of the planets in the solar system are about to march through the night sky in a single-file line. This planetary alignment, sometimes called a planet parade, will include all of the ...
Phys.org

News on solar-system-planets

So far, humanity has yet to find its first "exomoon"—a moon orbiting a planet outside of the solar system. But that hasn't been for lack of trying. According to a new paper by Thomas Winterhalder ...