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.
Non-Refundable Application Fee. A $100 one-time fee is required with your Global Entry application and must be paid at time of application submission through the Global Online Enrollment System. You can pay by credit card or through an electronic bank transfer. The fee is non-refundable, even if an application is denied.