Consider the following statements-
1- The Lunar Atmosphere and Dust Environment Explorer (LADEE) is a space exploration mission led by NASA.
2- An autonomous underwater vehicle (AUV) is a robot which travels underwater without requiring input from an operator.
3- A hyperloop is a theoretical mode of high-speed transportation sketched out by the entrepreneur and SpaceX founder Elon Musk.
4- Membraneless battery employs a phenomenon called laminar flow in which two liquids are pumped through a channel.
Which of the above group of statements are correctly stated?