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A Comet from the Stars?
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![]() ![]() Send message Joined: 9 Oct 17 Posts: 501 Credit: 22,875 RAC: 0 ![]() |
Solar System’s First Interstellar Visitor Dazzles Scientists Hello. Recently astronomers have spotted an unprecedented interplanetary traveler: an asteroid-like object that came from far beyond our own solar system. Discussion on Reddit about Theory about Oumuamua Fun fact: The name Oumuamua is Hawaiian in origin from the word meaning "scout" (from ʻou, meaning "reach out for", and mua, with the reduplicated second mua for emphasis​, meaning "first, in advance of"), and reflects the nature of the object as a "scout" or "messenger" from the past. (source: wikipedia) |
KLiK Send message Joined: 31 Mar 14 Posts: 1307 Credit: 22,994,597 RAC: 60 ![]() ![]() |
It's interesting how the asteroid has this difference in light reflexion from the surface. I'd like to see more of that strange object... ;) ![]() ![]() non-profit org. Play4Life in Zagreb, Croatia, EU |
![]() ![]() Send message Joined: 9 May 10 Posts: 3387 Credit: 4,182,900 RAC: 10 ![]() |
The main interest lies in that it is the first interstellar object detected from outside our Solar system. But I think we can pretty much rule out probes and spaceships. Be interesting to find out how long its orbit is and therefore when it has visited before and when it might visit again. It is on a hyperbolic trajectory and won't return, ie. it isn't in orbit around our sun. Bob DeWoody My motto: Never do today what you can put off until tomorrow as it may not be required. This no longer applies in light of current events. |
Michael Watson Send message Joined: 7 Feb 08 Posts: 1388 Credit: 2,098,506 RAC: 5 |
The main interest lies in that it is the first interstellar object detected from outside our Solar system. But I think we can pretty much rule out probes and spaceships. Be interesting to find out how long its orbit is and therefore when it has visited before and when it might visit again. The scientists at the SETI Institute don't seem to have ruled out the possible connection between Oumumamua and extraterrestrial intelligence. Again, last night, they were monitoring this mysterious object for radio signals. They've been doing so for over a month. |
moomin ![]() Send message Joined: 21 Oct 17 Posts: 6204 Credit: 38,420 RAC: 0 ![]() |
The main interest lies in that it is the first interstellar object detected from outside our Solar system. But I think we can pretty much rule out probes and spaceships. Be interesting to find out how long its orbit is and therefore when it has visited before and when it might visit again. Yes. SETI are listening to the interstellar interloper. Very strange and also pointless. https://www.centauri-dreams.org/?p=38844 But Oumuamua is not a probe or a spaceship. |
Michael Watson Send message Joined: 7 Feb 08 Posts: 1388 Credit: 2,098,506 RAC: 5 |
The SETI Institute used the Allen Telescope Array again, last night to monitor Oumuamua. They seem to think it at least as likely a source of intelligent signals as the exoplanets they normally scrutinize. If you have any way of definitely knowing the true nature Oumuamua, or have evidence that what the SETI Institute is doing is pointless, could you please present it here? Thank you. |
![]() Send message Joined: 9 Apr 04 Posts: 8797 Credit: 2,930,782 RAC: 1 ![]() |
"Le Scienze" publishes the Italian translation of a "Scientific American" article which says that on December 13 Breakthrough Listen will use the Green Bank Radio telescope to monitor this object. But I wonder, what kind of radiations can it emit? Tullio |
Michael Watson Send message Joined: 7 Feb 08 Posts: 1388 Credit: 2,098,506 RAC: 5 |
Dr. Andrew Siemion, head of the Berkeley SETI Research Center, and principal investigator for the Breakthrough Listen project writes that they will be looking mainly for narrow-band (artificial ) radio emissions. The Greenbank Telescope schedule mentions the frequency ranges of: ~ 1.5 through 2.6 and 3.85 through 10 GigaHertz. They will monitor the object for 10 hours today, starting at 20 hours GMT. The Greenbank Telescope is reportedly sensitive enough to detect an omnidirectional signal of only one watt of power (about the same as a cell phone) at the current distance of Oumuamua. |
![]() ![]() Send message Joined: 16 Jan 03 Posts: 755 Credit: 5,040,916 RAC: 28 ![]() ![]() |
Coverage on the BBC web site: Interstellar asteroid checked for alien technology http://www.bbc.co.uk/news/science-environment-42329244 Wonder if we will see those observations appear in the SETI@home work units? |
![]() ![]() Send message Joined: 16 Jan 03 Posts: 755 Credit: 5,040,916 RAC: 28 ![]() ![]() |
The first known interstellar asteroid may hold water from another star system in its interior, according to a study. From the BBC web site: http://www.bbc.co.uk/news/science-environment-42397398 |
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