8+ hour, 43+ min ago  (469+ words) Percy has now traveled more than 26. 2 miles on the Red Planet! Could you? Could you run a marathon on Mars? And also " would you want to? Mars' atmosphere is very thin, so heat from the sun escapes very quickly on…...

7+ mon, 1+ week ago  (612+ words) When learning about the effects of spaceflight on human health, you typically will hear about the dangers of radiation, bone density loss and changes in eyesight. While these long-term risks are important, a less frequently discussed concern is motion sickness....