Grunsfeld added that the brine streaks aren't the most likely place on Mars to find life - better conditions for microbes would likely be underground, near a source of fresh water, rather than salty water.
An Australia ETA (Electronic Travel Authority) is a visa for travel to Australia that is issued electronically. An Australia ETA is typically valid for one year, and allows for multiple visits to Australia for a stay of up to 90 days per visit for tourist or for business travelers.
A supplemental application fee of $50 is required and payable only by check or money order to NUPTHMS. The supplemental fee is the only item that should be sent to Northwestern University; all other materials are submitted via PTCAS.