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.
The Australia ETA is issued on-line; it is not necessary to submit an original passport or other documents for processing. Simply complete and submit Travisa's online request form and the Australia ETA can be processed within 24 hours. Same-day emergency visa service is also available.