NASA's Parker Solar Probe is scheduled to depart Earth next summer and make its way to the sun's atmosphere, the corona, about 4 million miles from its surface.
A new study says the planet's water might not be drinkable. Worse, it might not even exist. A team of scientists from the University of Arizona looked more closely into those dark streaks called "recurrent slope linae" or RSL in an effort to figure out their origin.
Got a burning out-of-this-world question? It's not too late to submit it to NASA. You never know, the billionaire Facebook founder might ask it for you.