What's stopping an alien civilization within 1,000 light-years from sending us a clea...?

So consider our spacecraft - Voyager 1 and 2. They are very close to the limits of what our largest radio dishes can communicate with. They are 9 billion miles from Earth and have the capabili…

Top stories for Long   What's stopping an alien civilization within 1,000 light-years from sending us a clear "hello"? Steve Baker, Senior Software Engineer (2013-present) • Answered June 15 So consider our spacecraft - Voyager 1 and 2. They are very close to the limits of what our largest radio dishes can communicate with. They are 9 billion miles from Earth and... Read more » 389 43   What is it like to be the child of a parent who doesn't want children? How did it change their relationship with each other? Michael Brightwood, Therapist from Karuna Institute (1997) • Updated October 28, 2023 My father did not want to be a father. My mom said she'd divorce him (just after WWII) if he didn't comply. she was putting him through medical school at the time. He compl... Read more » 1.4K 48   Protests like "Hands Off" and "No Kings" are spreading like wildfire, but the news is barely providing any coverage. Why is the mainstream media ignoring the growing resistance to Trump? Franklin Veaux, lives in Portland, OR • Answered June 14 Because news channels don't exist for the purpose you think they exist for. ABC News is a fantastic exemplar of this, so let's talk about ABC News. What is the purpose of ABC... Read more » 2.6K 122   Are prestressed concrete steel bars the backbone of modern construction? Ciro Pabon, B.S. Civil Engineering & Highway Engineering, Universidad La Gran Colombia (1984) • Answered June 10 In short: Prestressed concrete is not common. I think the person making the question is confusing regular bars with prestressed bars. Pre and post stressed bars are exactly wh... Read more » 149 23   Wouldn't it be better if instead of tariffs on imports from other countries, paid by Americans, why not just impose reverse tariffs, which only foreign exporters would pay for the privilege of selling to America, releasing us from this tariff burden? Nelson Garrett, Electrical Engineer (2002-present) • Answered June 12 Wouldn't it be better if instead of tariffs on imports from other countries, paid by Americans, why not just impose reverse tariffs, which only foreign exporters would pay ... Read more » 825 35   What happens if you have a heart attack and don't go to the hospital? Susan Ray • Answered November 21, 2022 My 46-year-old brother slept through his heart attack, and never woke up. According to his wife, he woke in the night with bad chest pain. Thinking it was a chest cold comi... Read more » 4.7K 385   Why were the movies Last Jedi and Rise of Skywalker so bad? José Manuel Muñiz Herrera, Attorney at Law (2007-present) • Answered June 8 Many reasons, but to sum up: Lack of planning for the trilogy as a whole. Lack of due professional respect and proper coordination between directors. Complete disinterest by t... Read more » 316 93   How could it have been possible when the national electric grid was built in the early twentieth century for transmission lines to have been cheaper to put on poles above ground vs. burying them? Was this another special interest boondoggle? Mats Andersson, B. Sc, M. Sc from Uppsala University • Answered June 8 Not unless you're prepared to entertain the idea of a world-wide "special interest". They did exactly the same in every country on the planet. The reasoning – sound or not –... Read more » 373 25   There are around 20 plus GPS-like satellites. How do they manage millions of requests per second? Loring Chien, I know about GPS navigation • Answered February 15, 2018 They don't handle any requests at all! Zero! NOT millions per second. They simply repeatedly broadcast coherent time and their position information. Receivers listen to four ... Read more » 1.3K 37   In Canada, does the patient pay the hospital for tools used in the surgery and the room cost or does the country take care of it for free? Joan Vredik Broadley, Baby boomer and avid reader. • Answered May 17 When one of our Canadian executives had a heart attack while on business in the USA, he returned home with a massive printed bill (it was sent in a box, not an envelope). W... Read more » 1.4K 132   What is the most elegant concept/idea that you still remember to this day after reading Gödel, Escher, Bach? Frederick M. Dolan, Professor, UC Berkeley • Answered June 12 I read Gödel, Escher, Bach: An Eternal Golden Braid around the time it was published, in 1979 or 1980. The idea I (and probably everyone else who read it) remember is that ... Read more » 273 9   What is the largest roadblock scientists face in devising a theory of everything? Kip Ingram, PhD Electrical Engineering, The University of Texas at Austin Cockrell School of... • Answered June 3 Gravity is the odd man out. All of the other forces of nature (electromagnetic, strong and weak nuclear) have been integrated into a coherent quantum theory. All attempts s... Read more » 167 9 Read more in your feed

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