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Space
Mar 27, 2017 17:42:16 GMT
Post by Philip Ayres on Mar 27, 2017 17:42:16 GMT
I posted this on FB too. Guess who's disagreeing with me there?
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Space
Mar 27, 2017 17:45:00 GMT
Post by blueshift on Mar 27, 2017 17:45:00 GMT
I posted this on FB too. Guess who's disagreeing with me there? ...Stephen Hawking?
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Space
Mar 27, 2017 20:19:31 GMT
via mobile
Post by Shockprowl on Mar 27, 2017 20:19:31 GMT
Why do they think there's another big planet?
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Space
Mar 29, 2017 7:24:27 GMT
Post by Philip Ayres on Mar 29, 2017 7:24:27 GMT
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Space
Mar 29, 2017 17:52:31 GMT
Post by legios on Mar 29, 2017 17:52:31 GMT
A salutary reminder to those who dismiss the power of the hurled rock. Throwing rocks may be a fairly primitive action...but it can have rather impressive effects!
Karl
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Space
Apr 8, 2017 19:16:41 GMT
Post by Philip Ayres on Apr 8, 2017 19:16:41 GMT
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Space
May 7, 2017 20:29:26 GMT
via mobile
Post by Pinwig on May 7, 2017 20:29:26 GMT
Just catching up with the 60th Sky at Night and a question I've long wondered about came back to me - in the days before digital technology, how did the probes that photographed the moon, Mars etc send pictures back if they were taking them on film?
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Space
May 7, 2017 20:34:11 GMT
Post by blueshift on May 7, 2017 20:34:11 GMT
Just catching up with the 60th Sky at Night and a question I've long wondered about came back to me - in the days before digital technology, how did the probes that photographed the moon, Mars etc send pictures back if they were taking them on film? The satellites basically developed the films on board, scanned them and faxed them back to Earth en.wikipedia.org/wiki/Samos_(satellite)
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Space
May 7, 2017 20:54:09 GMT
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Post by Pinwig on May 7, 2017 20:54:09 GMT
Woah, that's cool. I am now imagining small trained mice operating the scanner and the fax machine.
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Space
May 7, 2017 21:49:11 GMT
Post by Philip Ayres on May 7, 2017 21:49:11 GMT
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Space
May 8, 2017 20:14:41 GMT
Post by Shockprowl on May 8, 2017 20:14:41 GMT
We're all on that.
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Space
May 10, 2017 21:06:17 GMT
Post by Philip Ayres on May 10, 2017 21:06:17 GMT
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Space
May 31, 2017 6:41:37 GMT
Post by Philip Ayres on May 31, 2017 6:41:37 GMT
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Space
Jun 29, 2017 3:04:54 GMT
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Post by Toph on Jun 29, 2017 3:04:54 GMT
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Space
Jun 29, 2017 9:35:00 GMT
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Post by Fortmax2020 on Jun 29, 2017 9:35:00 GMT
Call me old fashioned but I prefer my scientific discoveries to be confirmed by experiment or direct observation. Until then it's all just statistical speculation - even if intriguingly so.
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Space
Jun 29, 2017 17:17:58 GMT
Post by The Doctor on Jun 29, 2017 17:17:58 GMT
The Tenth Planet is Mondas! Everyone knows this.
-Ralph
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Space
Jun 29, 2017 18:10:05 GMT
Post by blueshift on Jun 29, 2017 18:10:05 GMT
The Tenth Planet is Mondas! Everyone knows this. -Ralph And Planet 14 is Marinus!!!!
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Space
Jun 29, 2017 18:55:21 GMT
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Post by The Doctor on Jun 29, 2017 18:55:21 GMT
No it isn't.
-Ralph
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Space
Jun 30, 2017 1:15:13 GMT
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Post by Toph on Jun 30, 2017 1:15:13 GMT
Call me old fashioned but I prefer my scientific discoveries to be confirmed by experiment or direct observation. Until then it's all just statistical speculation - even if intriguingly so. This is how Neptune was found. Math. Calculating planetary orbits, the mass of each known object, and figuring out that things don't add up. That there should be another planet of a certain size, out there passed Uranus, then calculating about where it should be. Then setting telescopes up to where they thought, and after some time of searching, they found it. Planet 9, they're looking for it right now, but figure the best time to spot it will be autumn. Planet X, I dunno when they're gonna start searching.
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Space
Jun 30, 2017 8:44:36 GMT
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Post by Fortmax2020 on Jun 30, 2017 8:44:36 GMT
Neptune's position was statistically predicted and then observationally confirmed. It was speculation until it was observed. Informed speculation but still not a discovery and no one at the time claimed it as anything else.
There have been many other such predictions over recent decades that have come to nought. Far more than have ever actually turned up anything real.
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Space
Jun 30, 2017 9:04:31 GMT
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Post by Toph on Jun 30, 2017 9:04:31 GMT
You're not saying anything that I didn't.
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Space
Jun 30, 2017 17:59:15 GMT
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Post by Fortmax2020 on Jun 30, 2017 17:59:15 GMT
Maybe not but I'm more cautious.
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Space
Aug 3, 2017 17:57:55 GMT
Post by The Doctor on Aug 3, 2017 17:57:55 GMT
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Space
Aug 3, 2017 18:13:08 GMT
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Post by Pinwig on Aug 3, 2017 18:13:08 GMT
Woah.
That's mad. Only a day to send a message to the edge of interstellar space!
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Post by Philip Ayres on Sept 22, 2017 17:27:14 GMT
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Space
Oct 20, 2017 7:00:16 GMT
Post by Philip Ayres on Oct 20, 2017 7:00:16 GMT
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Space
Oct 27, 2017 7:59:01 GMT
Post by Pinwig on Oct 27, 2017 7:59:01 GMT
Quick question for the space experts so I'm getting my facts right for Sunbow Sundays. A nova is usually the result of two suns in a binary star system interacting with each other isn't it? Is it correct also to say a nova can be caused if a large enough planetary object hits a sun and either object explodes? or is that instance never called a nova?
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Space
Oct 27, 2017 18:27:38 GMT
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Post by Fortmax2020 on Oct 27, 2017 18:27:38 GMT
A nova is when one star strips material off another onto its surface via gravitational interaction. The influx of material leads to a short term changes in the absorbing stars nuclear output causing the short-term rapid increase in light etc that we call a nova. A bit like pouring water onto a boiling hot piece of metal - you get a sudden burst of steam.
Planets are small fry compared and/or are absorbed in a single chunk into the star as a whole not just it's surface. Composition is also different. Either way I don't think it would result in a nova-like effect.
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Space
Oct 27, 2017 20:26:19 GMT
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Post by Pinwig on Oct 27, 2017 20:26:19 GMT
Cheers.
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Space
Oct 27, 2017 22:09:29 GMT
Post by The Doctor on Oct 27, 2017 22:09:29 GMT
And if you go at supernova speed you are going really fast.
-Ralph
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