Gfted1 Posted May 7, 2021 Share Posted May 7, 2021 NASA's Mars helicopter Ingenuity will head to new airfield today on 5th flight. 1 "I'm your biggest fan, Ill follow you until you love me, Papa" Link to comment Share on other sites More sharing options...
rjshae Posted May 7, 2021 Share Posted May 7, 2021 12 hours ago, Lexx said: I think it's more that 1950s sci-fi writers knew what they were writing about. Sci-fi of today is most of the time just fantasy where magic is disguised as technology. Okay, so why does the 1950s moon lander have fins, hmm? 1 "It has just been discovered that research causes cancer in rats." Link to comment Share on other sites More sharing options...
Raithe Posted May 9, 2021 Share Posted May 9, 2021 https://www.universal-sci.com/article/undersea-volcano-energy-release For a long time, it was presumed that volcanic eruptions taking place on the bottom of oceans were boring compared to those that happen on dry land. After all, 'terrestrial volcanos' produce breathtaking, violent displays of fire and drama while their underwater counterparts merely generate some slow-moving lava pours. Nothing could be further from the truth though. As scientists retrieved data from remotely operated vehicles deep in the North East Pacific, they discovered that phenomena known as megaplumes release so much energy that they could power an entire continent. 1 "Cuius testiculos habeas, habeas cardia et cerebellum." Link to comment Share on other sites More sharing options...
rjshae Posted May 11, 2021 Share Posted May 11, 2021 Flying at up to Mach 16 could become reality with UCF's developing propulsion system You've got to love a name like "hypersonic oblique detonation wave engine". 2 "It has just been discovered that research causes cancer in rats." Link to comment Share on other sites More sharing options...
Guard Dog Posted May 11, 2021 Share Posted May 11, 2021 (1) Voyager 1 detected 'Hum' in Deep Space - YouTube The best guess is gas of varying density. If interstellar space is full of gas that is curious and possible problematic. Velocity meeting resistance creates (micro)friction. Friction means loss of momentum. Sure we're talking about tiny changes but they would be both cumulative and exponential over time. 3 "While it is true you learn with age, the down side is what you often learn is what a damn fool you were before" Thomas Sowell Link to comment Share on other sites More sharing options...
rjshae Posted May 11, 2021 Share Posted May 11, 2021 10 hours ago, Guard Dog said: (1) Voyager 1 detected 'Hum' in Deep Space - YouTube The best guess is gas of varying density. If interstellar space is full of gas that is curious and possible problematic. Velocity meeting resistance creates (micro)friction. Friction means loss of momentum. Sure we're talking about tiny changes but they would be both cumulative and exponential over time. Things that make you go hmmmm 1 "It has just been discovered that research causes cancer in rats." Link to comment Share on other sites More sharing options...
Raithe Posted May 13, 2021 Share Posted May 13, 2021 https://www.universal-sci.com/headlines/2017/5/12/early-earth-was-almost-entirely-underwater-with-just-a-few-island It might seem unlikely, but tiny grains of minerals can help tell the story of early Earth. And researchers studying those grains say that 4.4 billion years ago, Earth was a barren, mountainless place, and almost everything was under water. Only a handful of islands poked above the surface. Scientists at the Australian National University are behind this study, led by researcher Dr. Antony Burnham. The mineral grains in the study are the oldest rocks ever found. They’re 4.4 billion year old zircon mineral grains from the Jack Hills of Western Australia, where they were preserved in sandstone formations. 1 "Cuius testiculos habeas, habeas cardia et cerebellum." Link to comment Share on other sites More sharing options...
Guard Dog Posted May 13, 2021 Share Posted May 13, 2021 2 hours ago, Raithe said: https://www.universal-sci.com/headlines/2017/5/12/early-earth-was-almost-entirely-underwater-with-just-a-few-island Well oceans are teaming with life. Even in the Arctic and Antarctic. So I wouldn’t call it barren. It would definitely suck for us though. "While it is true you learn with age, the down side is what you often learn is what a damn fool you were before" Thomas Sowell Link to comment Share on other sites More sharing options...
Amentep Posted May 13, 2021 Share Posted May 13, 2021 New thread: I cannot - yet I must. How do you calculate that? At what point on the graph do "must" and "cannot" meet? Yet I must - but I cannot! ~ Ro-Man Link to comment Share on other sites More sharing options...
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