6.1K views · 79 reactions | LIQUID MARTIAN LAKE: For the first time, scientists have detected a lake of salty water on Mars – lying about one mile beneath the surface of the planet’s South Pole and raising the possibility of finding signs of life. David Muir on the major discovery. https://abcn.ws/2LF4zzF | ABC World News Tonight with David Muir | Facebook

724K views · 4.7K reactions | The final #CountdownToMars is on. Watch the launch of the Perseverance rover on Thursday, July 30.  ⏰ Live coverage begins at 7:00 a.m. EDT (1100 UTC). Launch targeted for 7:50 a.m. EDT.  Watch on this page or at nasa.gov/live ℹ️ Mission information: mars.nasa.gov/mars2020/  Mars information: solarsystem.nasa.gov/mars | NASA Mars | Facebook