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Space and Astronomy Thread |
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#3376 |
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Join Date: Jan 2016
Location: In Hell!!!!
Posts: 355
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120 billion galaxies in the observable universe!
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#3377 |
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Join Date: Oct 2011
Posts: 962
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(4!)! stars in the universe!
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#3378 |
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Forum Member
Join Date: Oct 2013
Posts: 3,982
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Quote:
Yeah, I like Kaku-sensei, mostly
Actually, my main gripe against documentaries and presenters is when they dumb-down. I know there are commercial and educational and target-audience reasons for this Still, annoying when you are looking forward to a decent documentary and Brian Cox (or Michio Kaku) opens the programme with... "This is our Sun <points at sky>. It is big and yellow and keeps us warm and the crops growing" |
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#3379 |
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Join Date: Sep 2011
Posts: 10,210
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Quote:
Michio Kaku, on one of those documentaries, said that if all of the stars in the Milky Way were peas there would be enough to fill a stadium. No mention of pea variety or which stadium!
Just say, "somewhere between one hundred million and four hundred million stars", and don't patronise me by telling me how may zeroes that is. It's billions, not millions!Oh wait, that was me...
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#3380 |
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Join Date: Sep 2011
Posts: 10,210
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Quote:
I totally agree. ...... And soooooo slow! Arts or history documentaries assume the audience is interested, intelligent and modrately well informed ..... and capable of following a complex narrative presented at a reasonable pace. For some reason they aim lower for science documentaries. Which is silly when you think about it. There are many people interested in science who are at least as well informed as those who enjoy non-science based documentaries. In fact in many cases they're the same people. I blame the proponderance of arts and media graduates who produce TV documentaries. They assume the audience are people like them who need dumbing down to.
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#3381 |
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Join Date: Sep 2011
Posts: 10,210
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Quote:
120 billion galaxies in the observable universe!
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#3382 |
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Join Date: Jan 2016
Location: In Hell!!!!
Posts: 355
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Quote:
Recent estimates were around 200 billion. This NY Times article published just a few weeks ago claims that there are Two Trillion Galaxies, at the Very Least.
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#3383 |
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Join Date: May 2009
Location: Devon
Posts: 12,829
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Quote:
You're off by a factor of 1000, you plonker.
It's billions, not millions!Oh wait, that was me... ![]() What are billions and trillions? https://en.wikipedia.org/wiki/Long_and_short_scales (I use Short Units) And don't also start me off about people who can't quote temperature in Deg C and Deg F. Many TV programmes leave you wondering and juggling Darts' Scores in your head Also, the Hubble mirror $300 million eff-up was originally (Ho-Ho-Ho) attributed to a US-European confusion over Imperial and Metric Units, but later revised to a fleck of paint. Cos' nobody could be that stupid, could they? |
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#3384 |
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Forum Member
Join Date: Sep 2011
Posts: 10,210
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Quote:
Careful!
What are billions and trillions? https://en.wikipedia.org/wiki/Long_and_short_scales (I use Short Units) And don't also start me off about people who can't quote temperature in Deg C and Deg F. Many TV programmes leave you wondering and juggling Darts' Scores in your head Also, the Hubble mirror $300 million eff-up was originally (Ho-Ho-Ho) attributed to a US-European confusion over Imperial and Metric Units, but later revised to a fleck of paint. Cos' nobody could be that stupid, could they? BiB: Wasn't the failure of Beagle 2 also put down to a mix up with units? |
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#3385 |
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Join Date: Jun 2003
Posts: 5,288
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I think that was another probe that either burned-up or skimmed off the atmosphere into space. Can't remember which.
Beagle 2 actually made it intact onto the surface, but I think the last of its panels failed to opened preventing communication with home. |
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#3386 |
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Join Date: Sep 2011
Posts: 10,210
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Quote:
I think that was another probe that either burned-up or skimmed off the atmosphere into space. Can't remember which.
Beagle 2 actually made it intact onto the surface, but I think the last of its panels failed to opened preventing communication with home. |
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#3387 |
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Join Date: May 2009
Location: Devon
Posts: 12,829
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I didn't realize that anybody used the long scale these days. Wikipedia says that most countries in continental Europe do!
BiB: Wasn't the failure of Beagle 2 also put down to a mix up with units? Japan has a wacky counting system, they count large numbers in ten thousands (historically) Also collective nouns for everything One flat piece of paper Two round bottles of beer Bit like our Murder of Crows. Ask a Japanese person to count Pairs of Spectacles and they will be flummoxed (It's a nice little joke) Fortunately, they are quite familiar with SI Units |
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#3388 |
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Forum Member
Join Date: Jul 2013
Location: Sees me at the tower
Posts: 1,669
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Quote:
Recent estimates were around 200 billion. This NY Times article published just a few weeks ago claims that there are Two Trillion Galaxies, at the Very Least.
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#3389 |
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Join Date: May 2004
Location: Storbritannia
Posts: 28,916
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I've recently got hooked on the US Cosmology series 'How The Universe Works' which is being aired on the Discovery Science channel every weekday afternoon......
Having checked the episode list I think I've joined somewhere near the end but new ones are still being made........into the 5th series and going on 40 episodes Watch out for it........it's really good ! Quote:
Taking astronomer's estimations that the average number of stars per galaxy is around 100 billion, then 2 trillion galaxies could mean our universe has an incredible 200 sextillion stars.
And now for some news updates: Large number of dwarf galaxies discovered in the early universe. A team of researchers, led by University of California, Riverside, astronomers, found for the first time a large population of distant dwarf galaxies that could reveal important details about a productive period of star formation in the universe billions of years ago. Martian ice deposit holds as much water as Lake Superior. Frozen beneath a region of cracked and pitted plains on Mars lies about as much water as what’s in Lake Superior, largest of the Great Lakes, researchers using NASA’s Mars Reconnaissance Orbiter have determined. ^ potentially useful source of water, oxygen and fuel (4H2 + CO2 --> CH4 + 2H2O ) for science missions and eventual colonists. |
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#3391 |
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Join Date: Jul 2010
Posts: 24,096
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Yeah, em drive, might as well call it the harry potter spaceship, nobody has a clue how it works .......
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#3392 |
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Join Date: Jul 2010
Posts: 24,096
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Travelling the solar system, using witchcraft. I don't recall arthur c clarke writing anything like that .........
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#3393 |
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Forum Member
Join Date: May 2009
Location: Devon
Posts: 12,829
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The best and most wonderful ways of exploring the Universe exist in our imaginations.
Cheaper than NASA too. |
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#3394 |
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Join Date: Feb 2014
Location: The Sixth Circle of Hell
Posts: 20,171
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#3395 |
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Join Date: Sep 2011
Posts: 10,210
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The Pan-STARRS project has publicly released the world's largest digital sky survey. ![]() Pan-STARRS releases catalogue of 3 billion astronomical sources Quote:
The survey took approximately four years to complete, and scanned the sky 12 times in five filters. The data comprise 3 billion separate sources, including stars, galaxies, and various other objects. The immense collection contains 2 petabytes of data, which is equivalent to 40 million four-drawer filing cabinets filled with single-spaced text. All this information had to be properly catalogued so that the astrophysics community can quickly access and exploit the data.
There must be thousands of amateur astronomer types in the world with the expertise to scrutinize these images in a multitude of imaginative ways. I doubt it will be long before somebody spots something interesting. (Link)Will you be having a go at it?
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#3396 |
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Forum Member
Join Date: Feb 2014
Location: The Sixth Circle of Hell
Posts: 20,171
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The year in space and astronomy and do we live in a computer simulation?
It would explain a lot if we are. http://phys.org/news/2016-12-2016the...astronomy.html http://www.bbc.com/earth/story/20160...may-not-matter |
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#3397 |
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Forum Member
Join Date: Sep 2011
Posts: 10,210
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SpaceX have issued an update about the Falcon 9 that exploded on the launch pad last year: Anomaly Updates.
And here's an explanation by Scott Manley. |
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#3398 |
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Join Date: Nov 2003
Location: Lancashire
Posts: 25,817
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Source of mysterious deep space radio wave discovered for the first time
https://www.theguardian.com/science/...MCNEWEML6619I2 |
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#3399 |
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Join Date: Aug 2012
Posts: 16,124
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There s a very bright star in sky right now. I am seeing it now at 6.30 pm from the Midlands. almost due south and about a third of the way up from the horizon (to directly overhead).
I think it might be venus but it is very very bright. Any experts able to confirm, deny , explain why it is brighter than usual. |
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#3400 |
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Forum Member
Join Date: Apr 2005
Location: Crawley, West Sussex
Posts: 9,295
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Quote:
I think it might be venus but it is very very bright.
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All times are GMT. The time now is 08:22.




Just say, "somewhere between one hundred million and four hundred million stars", and don't patronise me by telling me how may zeroes that is.
It's billions, not millions!
