Other Than Mars Thread
February 8th, 2017 at 1:54:12 PM permalink | |
rxwine Member since: Oct 24, 2012 Threads: 188 Posts: 18633 | Unless my info is wrong, the two trivia are related.
Uranus is the Greek god. U R welcome. You believe in an invisible god, and dismiss people who say they are trans? Really? |
February 15th, 2017 at 5:50:22 PM permalink | |
rxwine Member since: Oct 24, 2012 Threads: 188 Posts: 18633 |
One other interesting bit of info \
3 million per satellite. Space X had a charge of 50 million for one satellite. http://www.csmonitor.com/Science/Spacebound/2017/0215/How-did-India-launch-104-satellites-all-at-once You believe in an invisible god, and dismiss people who say they are trans? Really? |
February 15th, 2017 at 6:20:13 PM permalink | |
Nareed Member since: Oct 24, 2012 Threads: 346 Posts: 12545 |
How massive a satellite? To what kind of orbit? Those two factors determine much of the cost. Orbiting a 1 lb satellite to 150 km up costs much less than orbiting a 3-ton satellite to 36,000 km up. I doubt anyone can put up the latter for $3 million. Donald Trump is a one-term LOSER |
April 5th, 2017 at 6:07:56 AM permalink | |
rxwine Member since: Oct 24, 2012 Threads: 188 Posts: 18633 |
http://www.orlandosentinel.com/news/space/go-for-launch/os-citizen-scientists-may-have-located-candidates-for-planet-nine-20170405-story.html You believe in an invisible god, and dismiss people who say they are trans? Really? |
April 6th, 2017 at 12:08:55 AM permalink | |
rxwine Member since: Oct 24, 2012 Threads: 188 Posts: 18633 | We're using telescopes around the Earth in a combined project to look at the event horizon of a black hole. Very Long Baseline Interferometry (VLBI) http://www.ibtimes.com/photographing-supermassive-black-holes-earth-size-event-horizon-telescope-starts-2521548 You believe in an invisible god, and dismiss people who say they are trans? Really? |
April 6th, 2017 at 2:41:42 AM permalink | |
Pacomartin Member since: Oct 24, 2012 Threads: 1068 Posts: 12569 | The Metonic cycle was discovered by the Greek astronomer Meton of Athens (in the fifth century BC). The difference between the two periods (of 19 years and 235 synodic months) is only a few hours, depending on the definition of the year.
The clay tablet almost certainly represented generations of observations, but it is still remarkable. Although one metonic cycle of 19 years is within a lifetime, there was no measurement systems at the time to see how many cycles of the moon (within a few seconds) had passed. We can see cycles of the moon that are accurate to a few days, but not to a few seconds. You would essentially have to set up an "order" that would pass down the observations over generations in a manner that would be intelligible to future generations. It's like the problem of nuclear waste which could be dangerous for a period of time that exceeds not only the English language, but all of civilization and written language period. You need to set up a near religious order that will recognize the symbols for a thousands generations. Longitude is a good book about how it took generations of study on a problem until a solution was reached. If you think about it, Marco Polo was travelling across many degrees of longitude in the 13th century, and the problem of how to measure longitude was only solved some 5 centuries later. The problem of measuring latitude was solved by the ancients, although sailing ships required much more precision. |
April 27th, 2017 at 12:42:26 PM permalink | |
rxwine Member since: Oct 24, 2012 Threads: 188 Posts: 18633 | Cassini made a successful dive through Saturn's rings, also snapped a photo of Saturn's surface. Looks like it's populated by clams. blurry image, more like Rorschach test Cassini launched when Bill Clinton still had a few years left as President. You believe in an invisible god, and dismiss people who say they are trans? Really? |
June 10th, 2017 at 2:43:22 AM permalink | |
odiousgambit Member since: Oct 28, 2012 Threads: 154 Posts: 5055 | Tidbit from an episode on Planet 9 on "Space's Deepest Secrets" [Science Channel] : To even suspect the existence of it, first the erratic orbits of various objects in the Kuiper belt had to be calculated. The remark was made that it takes a supercomputer 3 weeks to pump this all out. So it seems that not so long ago any speculation about such a thing would have had to be done without any real data to base it on. I'm Still Standing, Yeah, Yeah, Yeah [it's an old guy chant for me] |
October 29th, 2017 at 3:17:32 AM permalink | |
odiousgambit Member since: Oct 28, 2012 Threads: 154 Posts: 5055 | We had a visitor from outside our solar system. Seems to me it can't be too unusual, but it was going really fast! Too fast to start orbiting the Sun, even elliptically it seems. Things escape their systems due to the way distinct objects interact, for example one star can fling the other out into space. It's the slingshot thing. Even a black hole could be headed our way by this method, undetectable since the way they are spotted is by the way matter interacts with them, and being flung out, there could be nothing there to interact. Why mention that? Hey, well, Halloween is coming up! https://www.nytimes.com/2017/10/27/science/interstellar-object-solar-system.html I'm Still Standing, Yeah, Yeah, Yeah [it's an old guy chant for me] |
November 7th, 2017 at 9:21:41 PM permalink | |
rxwine Member since: Oct 24, 2012 Threads: 188 Posts: 18633 | If a probe can reach Alpha Centauri in 20 years, why haven't we launched one already? I mean unmanned of course. Is there some technology still lacking? You believe in an invisible god, and dismiss people who say they are trans? Really? |