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.
Exceptions include American citizens and visitors with a valid visa. ItÂ´s best to get your ETA before you book your flight to Canada. You may not be able to fly without it. In most cases, the ETA will be granted within minutes of applying. Once approved, your ETA is valid for five years or until your passport expires, whichever comes first. This means you can fly to Canada without reapplying so long as your ETA and passport remain valid. To make sure that you can board your flight to Canada, you will need to travel with the passport you used to apply for your ETA as the ETA is electronically linked to it. If in doubt, you can always check the status of your ETA on Canada.ca/eTA. To find out more, including who needs an ETA and who doesnÂ´t, visit Canada.ca/eTA. See you in Canada!