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Debris actually pelts the ISS all the time, and noticeable dents and cracks line the exteriors. But should something fully breach the station, cabin atmosphere will seep into the vacuum of space and alarms will go off. Pressure gauges will confirm to astronauts that the station has, almost certainly, been hit, and the speed of the seepages may indicate how much time the crew has to respond. According to one NASA estimate, a 0.6-centimeter-wide hole leaves 14 hours to plug the leak. A 20-centimeter hole leaves less than a minute.
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How to share your real-time location with Google MessagesYou can find the feature in the same place as the old one. To get to it, open a message and tap on the attachment icon on the bottom left. Instead of doing away with the current option, Google has split the "Location" feature into "Real-time location" and "One-time location" options. You'll have to grant location permissions if you haven't already, but that's just the first time you share.