Venus is often viewed as Earth’s sister planet, or perhaps more accurately its ugly sister. This familial comparison stems from their approximately equal mass and physical size. But compared to the relatively benign and hospitable surface conditions that prevail on Earth, Venus is the stuff of nightmares. The planet has a surface temperature of 464…

Let’s face it no one has a clue how Phobos formed. One theory says it’s a captured primitive asteroid. Well, it does look like one. Another theory claims it formed after a giant asteroid slammed into Mars. Really, it’s all very confusing. Anyway, JAXA is going to send a mission to clear up the mystery.…