When Earth and Mars are at their theoretically closest point of 54.6 million km, it would take a signal from Earth about 3 minutes to make the journey, and then another 3 minutes for the signals to get back to Earth.
Switchgrass is a hardy, deep-rooted, perennial rhizomatous grass that begins growth in late spring. It can grow up to 2.7 m high, but is typically shorter than big bluestem grass or indiangrass. The leaves are 30â90 cm long, with a prominent midrib.
Switchgrass (Panicum virgatum L.) is a native grass species to much of the USA. It has recently shown great potential for use in production of fuel ethanol from cellulosic biomass (Lynd et al., 1991).he Ultimate Biomass Crop-has produced as much as 15 Tons/Acre. Alamo Switchgrass is the leader of renewable cellulosic and biomass production. Alamo switchgrass is a selection released in 1978 by the USDA Soil Conservation Service in Texas in cooperation with the Texas Agricultural Experiment Station.