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Old 07-13-2016, 04:22 PM #273
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Default Re: Space Discussion Thread

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Originally Posted by H2Oxide View Post
Actually, this is the first image Juno has sent back since orbital insertion. It was released a few hours ago.
weird. Hopefully we get some close up shots soon!

-Alex


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Old 07-13-2016, 08:56 PM #274
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Default Re: Space Discussion Thread

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Originally Posted by Hap View Post
weird. Hopefully we get some close up shots soon!

-Alex
August 27 when it makes its next close pass, I suppose a couple of days after that when it swings back out again before it transmits its data but it should be really good.

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Old 07-14-2016, 03:10 PM #275
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Default Re: Space Discussion Thread

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Originally Posted by Razako View Post
Seems like some cool movie plots though. The LHC opening a gateway to Hell/Aliens/Another dimensions etc.
Lets hope its not like the even horizon movie : P .
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Old 07-14-2016, 03:41 PM #276
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Default Re: Space Discussion Thread

lol, better not be.
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Old 07-15-2016, 07:38 AM #277
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Default Re: Space Discussion Thread

Just watched the movie Apollo 13, very good movie! I wouldn't change planet Earth for anything. It's our home

-Alex
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Old 07-15-2016, 10:04 AM #278
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Default Re: Space Discussion Thread

Yes, I think I might have watched that many years ago. Good movie IICR. I wouldn't change our home either. These are two of my favourite images of the UK and USA.

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Old 07-16-2016, 01:21 AM #279
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Default Re: Space Discussion Thread

I would not go so far as not trade it for 'anything', but at the moment there is no other place we know about i'd rather live.

Not that earths overall climate is that good though. Just on our own planets we have hardly survivable poles, and due to axial tilt also freaky seasons on many parts of the planet.

I for one wish we did not have the axial tilt at all. Without that climate would mostly be a factor of lattitude and constant year round, allowing us to settle in places that are always comfortable.
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Old 07-16-2016, 02:21 AM #280
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Default Re: Space Discussion Thread

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Originally Posted by Benm View Post
I would not go so far as not trade it for 'anything', but at the moment there is no other place we know about i'd rather live.

Not that earths overall climate is that good though. Just on our own planets we have hardly survivable poles, and due to axial tilt also freaky seasons on many parts of the planet.

I for one wish we did not have the axial tilt at all. Without that climate would mostly be a factor of lattitude and constant year round, allowing us to settle in places that are always comfortable.
I heard that if Earth didn't have an axial tilt the tropics would be impossible to live in! Although I agree, having constant year-round temperatures in different locations would be nice

-Alex
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Old 07-16-2016, 02:41 AM #281
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Default Re: Space Discussion Thread

The equatorial regions might be too hot to survive in such a case indeed, just like the polar regions are too cold.

Interestingly at the moment the equator is a fairly good habitat that alllows people to thrive by growing crops, herding cattle and fishing. Despite being the region that gets most sun exposure, it's also a region where rain is commonly seen.

The worst places actually are those a bit removed from the equator like the sahara where rainfall is very rare and many countries lack resources to mitigate that problem.

Counties very close to the equator tend to thrive, just look at singapore, malaysia and indonesia. Due to how weather systems work these receive a fair amout of rain over the year.

I've been to places like luxor egypt where rain is a really rare thing. They even had outdoor power sockets there with no rain protection since that was only a problem once a decade or less
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Old 07-16-2016, 06:30 AM #282
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Default Re: Space Discussion Thread

Speak for yourselves guys. The axial tilt causes some amazing stuff. Most temperate crops wouldn't grow at all without seasonal change. Seasons are awesome, and they're arguably part of a lot of life's evolutionary pressures. Sure sometimes it's uncomforatble, but we live in an age of indoor climate control and clothing.

As for equatorial countries thriving, I'm not so sure. Equador, Colombia, Sao Tome & Gabon, Maldives, Kiribati, Indonesia, Kenya, and the Congos are all economically at fairly different standings. Might just as well say countries close to the poles (or pretry much any other latitude) are inherently successful.

Edit: As for seeking constant temperatures Hap, islands in most parts of the world tend to have a pretty consistent temperature range. I was amazed visiting the Florida Keys. Honestly did not expect it to be that much cooler in the summer or warmer in the winter than Miami.
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Old 07-16-2016, 07:13 PM #283
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Default Re: Space Discussion Thread

In other space news, China has built the worlds largest radio telescope, they relocated 9000 people to do this. Here is a short video, there are other videos if your interested. The telescope is expected to be activated in September and is expected to pick up signals from as far as 1,000 light-years away. The main goal of this radio telescope is to search for intelligent alien life beyond Earth.



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Old 07-16-2016, 09:11 PM #284
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Default Re: Space Discussion Thread

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In other space news, China has built the worlds largest radio telescope, they relocated 9000 people to do this. Here is a short video, there are other videos if your interested. The telescope is expected to be activated in September and is expected to pick up signals from as far as 1,000 light-years away. The main goal of this radio telescope is to search for intelligent alien life beyond Earth.



Alan
I've been following this telescope for a while, and though it can definitely be a great instrument, I think China built it simply to burn money as they usually do. I wouldn't expect much at all out of it yet since there's still no clear organized plan for its scientific work, and it still seems pretty much closed to the international scientific community. Definitely cool though.
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Old 07-17-2016, 12:51 AM #285
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Default Re: Space Discussion Thread

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Speak for yourselves guys. The axial tilt causes some amazing stuff. Most temperate crops wouldn't grow at all without seasonal change. Seasons are awesome, and they're arguably part of a lot of life's evolutionary pressures. Sure sometimes it's uncomforatble, but we live in an age of indoor climate control and clothing.

As for equatorial countries thriving, I'm not so sure. Equador, Colombia, Sao Tome & Gabon, Maldives, Kiribati, Indonesia, Kenya, and the Congos are all economically at fairly different standings. Might just as well say countries close to the poles (or pretry much any other latitude) are inherently successful.

Edit: As for seeking constant temperatures Hap, islands in most parts of the world tend to have a pretty consistent temperature range. I was amazed visiting the Florida Keys. Honestly did not expect it to be that much cooler in the summer or warmer in the winter than Miami.
I think evolution would have produced sentient life on earth regardless. Variations put pressure to develop coping mechanisms, but without those things would be fine as well.

As for economical welfare versus latitute: there seems to be no causal relation there.

Look at an island like hispanionla: Haiti and the dominican republic both reside on that same, not overly large, landmass. One is piss poor and the other quite wealthy and developed. This cannot be blamed on climate (although in haiti they burned most of the trees for firewood, so it looks quite different).
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Old 07-17-2016, 05:48 AM #286
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Default Re: Space Discussion Thread

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I've been following this telescope for a while, and though it can definitely be a great instrument, I think China built it simply to burn money as they usually do.
I Have a hard time believing that China would build something like that just to burn money.

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I wouldn't expect much at all out of it yet since there's still no clear organized plan for its scientific work,
What makes you think that?

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and it still seems pretty much closed to the international scientific community.
Of course it is, if it's built for the purpose they claim, then they will want to make the discovery themselves and release it to the world.

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Old 07-17-2016, 07:30 AM #287
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Default Re: Space Discussion Thread

Quote:
Originally Posted by Pi R Squared View Post
I Have a hard time believing that China would build something like that just to burn money.



What makes you think that?



Of course it is, if it's built for the purpose they claim, then they will want to make the discovery themselves and release it to the world.

Alan
China has some economic issues that they handle by rapidly developing expensive things that aren't completely necessary. Most often we see this in the media as "ghost cities", but it's frequently included all sorts of other investments with serious capital. Not going to try to explain the how or why behind it since I don't understand it well myself, but it is something that happens with economists' explanations fairly available online if you'd like to research.

As for the apparent lack of good planning behind it, that's an impression given to me by an astronomer who's worked with a few international radio astronomy facilities. I'm an EE student and not a pro astronomer, so that's really all I can say on that end.

What I can say is that projects like this are usually way more successful the more institutions participate. These things have hugely complex readings with massive amounts of data, and a "finding" takes a lot of processing. It's not like you pick up an alien TV station or anything. The process usually involves a lot of cross-referencing and multi-party verification. Hence the need for more international participation for most similar projects.

I'm pretty biased on this matter though since I've been involved on the instrumentation side of various aspects of radio astronomy and am somewhat tied to NRAO. Mostly just going off of chatter I've picked up from people more involved in the field.

Who knows though? Maybe China's got some serious new tech they've put into the project and has an excellent team behind it that we haven't heard about. Only time will tell. I just wouldn't put too much hope in it when we've already got excellent organizations operating seperately.
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Last edited by Rivem; 07-17-2016 at 07:31 AM.
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Old 07-19-2016, 12:35 AM #288
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Default Re: Space Discussion Thread

Who knows what the exact motivation is in china - it could just be a prestige project, but also something like a race to make 'first contact'.

It will not pick up alien TV stations if those are anything like our analog tv stations were. One reason this would not happen is that TV transmitters are usually designed to transmit sideways from the tower, not up into space since. Antenna's are constructed to radiate in a plane up to the horizon - after that they do take off into space, but the signal path loss would be such that there is little chance of anyone around another star even detecting the signal.

This would be different if someone sent a message on purpose. Earth once did, and a radio telescope of this size could be used to receive such messages from others. It's not beyond reason that china would outfit this telescope with a transmitter at some point, perhaps representing earth.
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