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.
Cost of Global Entry and Eligibility. The cost of Global Entry is a $100 non-refundable application fee (the fee is non-refundable even if your application is denied). Global Entry is valid for 5 years. After 5 years you will have to reapply and pay another $100 application fee. (Tip: There are a couple of ways to get Global Entry for free if you have certain credit cards or elite status â see related post: How to Get TSA PreCheck or Global Entry For Free).