Nova Sciencenow Nova Short Martian Salt

Summary

If cellulose survived 250 million years on Earth, could it survive in Once we find a planet that has Earth- potential, how can we tell if there is life on it? Harvard astrophysicist Lisa Kaltenegger ... Premieres Wednesday, January 19th at 8PM ET/PT on most PBS stations. pbs.org/ We always have to keep in mind that a Documentary, after all, can tell lies and it can tell lies because it lays claim to a form of ... In its search for life beyond Earth, NASA employs a "sky crane" maneuver to land the Curiosity rover on We spend about one-third of our lives sleeping. Why? Believe it or not, scientists don't know for sure. But evidence is building that ... See how a mission to search for water on the moon is exploring a big question on a small budget. For more go to ...