Why is there nothing between Mercury and the Sun?
Ever wonder why there aren’t more planets between Mercury and the Sun? Maybe it’s the Sun’s fault.
Why is Mars so small?
J’onn J’onzz needs astronomers’ help figuring out why his home planet of Mars is smaller (and hence, less habitable) than the Earth. He already asked the rest of the Justice League, but they could not solve the problem. Can Drążkowska et al. save the day?
Mercury’s surprising density: What about magnets?
A new model explains Mercury’s major density with magnetism.
New Insight Into A Potentially Evaporating Planet
There is a small planet candidate, likely rocky, that looks like it’s being vaporized. The authors of this paper show evidence that this evaporation might be related to stellar activity, not just the planet’s proximity to its star.