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Space and Astronomy Thread
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Keyser_Soze1
30-05-2016
Originally Posted by TelevisionUser:
“Two updates today:

NASA reveals new close-up images of Pluto. Released both as a high-res still and in the form of a video, the new images form a mosaic spanning part of the hemisphere of Pluto that the New Horizons spacecraft flew over back on July 14, 2015.

At 10:29pm BST (21:29 UT) on Monday, 30 May 2016, Earth and Mars will be 46,777,480 miles (75,281,050 kilometres) apart — the closest that the pair have been since 30 October 2005.

Look due south towards the horizon to see Mars. Interestingly, Mars will be close to the star Antares and that star's name means "rival of Mars" due to its red colour.”

That Pluto mosaic is exceptional.

More on Ceres

http://phys.org/news/2016-05-life-ce...ht-baffle.html
Keyser_Soze1
07-06-2016
How would you react if alien life was ever discovered?

http://www.smithsonianmag.com/scienc...ife-180959286/

Just what are the mysterious flashes in the sky called fast radio bursts?

http://www.bbc.com/earth/story/20160...rom-deep-space
atg
07-06-2016
Originally Posted by Keyser_Soze1:
“How would you react if alien life was ever discovered?”

Meh, told you so.
Keyser_Soze1
07-06-2016
Originally Posted by atg:
“Meh, told you so. ”



https://s-media-cache-ak0.pinimg.com...db14f86759.jpg
archiver
07-06-2016
Originally Posted by Keyser_Soze1:
“How would you react if alien life was ever discovered?”

Depends. Do they pray?
brangdon
11-06-2016
Originally Posted by Keyser_Soze1:
“How would you react if alien life was ever discovered?”

Depends on the details. If it's Kepler finding, in the spectrum of a distant planet, a chemical imbalance that requires organic life to sustain, well, good, but there's not much we can do with it. And frankly I think it's pretty much inevitable something like this will happen, and probably fairly soon.

If it is extra-terrestrial bacteria found within the solar system, then that's a lot more exciting (although also quite likely in my view). My first question would be, does it use the same DNA encoding as us? If yes, then that makes me think we might have the same origin and it isn't really alien. If we find more than one way to be alive than that would make me very happy.

If it's an alien message from outer space, then that's a bigger deal because it implies intelligence. I think this is much less likely. We've been doing SETI for decades, so if it was going to happen, it would have happened already. I'd be excited, but also scared. The next step is to decode it. How I'd react then partly depends on what it says.

Aliens landing here is even less likely. There are so many possible scenarios here (I read a lot of SF) that I'd need more details before reacting. Peaceful or war-like, one craft or many, where did they come from, what's their technology like?
Keyser_Soze1
13-06-2016
Originally Posted by brangdon:
“Depends on the details. If it's Kepler finding, in the spectrum of a distant planet, a chemical imbalance that requires organic life to sustain, well, good, but there's not much we can do with it. And frankly I think it's pretty much inevitable something like this will happen, and probably fairly soon.

If it is extra-terrestrial bacteria found within the solar system, then that's a lot more exciting (although also quite likely in my view). My first question would be, does it use the same DNA encoding as us? If yes, then that makes me think we might have the same origin and it isn't really alien. If we find more than one way to be alive than that would make me very happy.

If it's an alien message from outer space, then that's a bigger deal because it implies intelligence. I think this is much less likely. We've been doing SETI for decades, so if it was going to happen, it would have happened already. I'd be excited, but also scared. The next step is to decode it. How I'd react then partly depends on what it says.

Aliens landing here is even less likely. There are so many possible scenarios here (I read a lot of SF) that I'd need more details before reacting. Peaceful or war-like, one craft or many, where did they come from, what's their technology like?”

A very good post.

Just how big is the Universe?

http://www.bbc.com/earth/story/20160...f-the-universe

An ingenious method that an alien civilisation could use to contact us with lasers.

http://news.nationalgeographic.com/2...-kepler-space/
archiver
14-06-2016
Originally Posted by Keyser_Soze1:
“An ingenious method that an alien civilisation could use to contact us with lasers.

http://news.nationalgeographic.com/2...-kepler-space/”

An interesting article, but I believe the unknown nature of the rest of the universe, from every viewpoint, would make it unlikely an intelligent species which clawed its way through evolution would advertise its position, unless..

Unless they did it as a trap. A honey pot trap, or maybe they are Venus man traps and they drop their high power lasers around like seedlings.

More likely they'd use the technology to hide their signal imho.
FIN-MAN
15-06-2016
The world’s biggest, baddest rocket launched Saturday and it was stunning.
http://arstechnica.com/science/2016/...gogh-painting/

Delta IV NROL-37 Launch Highlights
https://www.youtube.com/watch?v=RR-qOwIf9sY
atg
15-06-2016
Originally Posted by FIN-MAN:
“The world’s biggest, baddest rocket launched Saturday and it was stunning.
http://arstechnica.com/science/2016/...gogh-painting/

Delta IV NROL-37 Launch Highlights
https://www.youtube.com/watch?v=RR-qOwIf9sY”

Very impressive. A couple of observations, first of all having asked for a nice clear "go/no go", there's always one rebel show pony who has to say "clear to proceed" instead

More serious observation, this looked different from most, if not all previous launches. The initial burst of flame on ignition didn't seem to be under much force and licked a long way up the vehicle rather than blown out the side by baffles. After that it looked a lot less fiery than usual, apart from some odd looking flames at the fuel tank end of the nozzles, visible at 1:42-1:44.

Is the almost invisible and streamlined nature of the exhaust due to improved efficiency in burning the fuel, or design, or something else?
Keyser_Soze1
15-06-2016
LIGO has detected gravitational waves for the second time!

http://www.livescience.com/55081-gra...collision.html

http://www.seeker.com/more-gravitati...860493586.html

http://www.wired.com/2016/06/ligo-an...e-observation/
FIN-MAN
16-06-2016
Originally Posted by atg:
“Very impressive. A couple of observations, first of all having asked for a nice clear "go/no go", there's always one rebel show pony who has to say "clear to proceed" instead

More serious observation, this looked different from most, if not all previous launches. The initial burst of flame on ignition didn't seem to be under much force and licked a long way up the vehicle rather than blown out the side by baffles. After that it looked a lot less fiery than usual, apart from some odd looking flames at the fuel tank end of the nozzles, visible at 1:42-1:44.

Is the almost invisible and streamlined nature of the exhaust due to improved efficiency in burning the fuel, or design, or something else?”

I could be mistaken but I believe it is do to the liquid hydrogen/oxygen fuel they use that burns mostly clear.
WhatJoeThinks
16-06-2016
Originally Posted by FIN-MAN:
“I could be mistaken but I believe it is do to the liquid hydrogen/oxygen fuel they use that burns mostly clear.”

I wondered if it was down to the fuel, and then read that it was LH2/LOX. Hydrogen burns with an orange flame though.
Keyser_Soze1
18-06-2016
For anyone interested in Astronomy this site is constantly updated with the latest stories.

http://phys.org/space-news/

The Nasa probe Juno is about to arrive at Jupiter and (hopefully) send images back to Earth in unprecedented detail.

http://news.nationalgeographic.com/2...ace-astronomy/
Tissy
18-06-2016
Mr Peake on his way home - wishing him and the other crew a safe journey home
stargazer61
18-06-2016
Come home safely, Tim. You have done a magnificent job
stargazer61
18-06-2016
Great pictures of Tim safely back on Earth. Does he never stop smiling?
mal2pool
18-06-2016
Tim Peake will come back a hero. The things he has done beaming images from the space station on twitter, talking on satellite to schools and doing experiments up there. Seems a really nice bloke with a great smile too.
Need a big parade to welcome him back to england.
Madridista23
18-06-2016
Originally Posted by mal2pool:
“Tim Peake will come back a hero. The things he has done beaming images from the space station on twitter, talking on satellite to schools and doing experiments up there. Seems a really nice bloke with a great smile too.
Need a big parade to welcome him back to england.”

I was waiting for someone to chime in with 'Hero'. He was doing his job FFS.
mal2pool
18-06-2016
Originally Posted by Madridista23:
“I was waiting for someone to chime in with 'Hero'. He was doing his job FFS. ”

space walking and risking his life to go up there i couldnt do it. not many could.
brangdon
18-06-2016
Originally Posted by FIN-MAN:
“The world’s biggest, baddest rocket launched Saturday and it was stunning”

SpaceX successfully launched two more satellites to GTO. Attempted but failed another ocean landing. It sounds like, either one engine ran out of LOX, or else it failed some other way and the other two engines ran out of LOX trying to compensate. It also sounds like they recovered some of the wreckage this time.

Next SpaceX launch is around 15th July, and is to LEO with a return-to-base landing, which ought to be easier.
Eadfrith
19-06-2016
Quote:
“Blue Origin successfully launched their New Shepard capsule on their booster today, 14:35 UTC, June 19th 2016. This booster has flown for the forth time after successfully landing via landing legs on previous missions.”

https://www.youtube.com/watch?v=kIcJ9Hou2e8

Pretty awesome video.
TelevisionUser
19-06-2016
Originally Posted by Keyser_Soze1:
“A very good post.

Just how big is the Universe?

http://www.bbc.com/earth/story/20160...f-the-universe”

That 100 billion light year across Universe estimate is probably correct and it ties in with other estimates. Incidentally, that report contained a picture of the Arecibo radio telescope which sadly might be axed by short term ignoramuses: http://www.planetary.org/blogs/emily...e-arecibo.html

Originally Posted by FIN-MAN} The world’s biggest, baddest rocket launched Saturday and it was stunning.
[url
:
“http://arstechnica.com/science/2016/...gogh-painting/[/url]

Delta IV NROL-37 Launch Highlights
https://www.youtube.com/watch?v=RR-qOwIf9sY”

That big mutha reminds me of the good ol' Titan III launches: https://www.youtube.com/watch?v=seT2dZ5aKGU

Meanwhile, back on Mars: NASA Mars Orbiters Reveal Seasonal Dust Storm Pattern
TelevisionUser
21-06-2016
It's Strawberry Moon time! http://www.bbc.co.uk/news/uk-36584404

...whereas on Venus, it's electric atmosphere time: http://www.natureworldnews.com/artic...atmosphere.htm

...and on Mars, it's mega Grand Canyon time: http://apod.nasa.gov/apod/ap160529.html
Keyser_Soze1
24-06-2016
Two very thought provoking articles on the latest research on Black Holes.

http://www.livescience.com/55179-bla...omed-star.html

http://www.seeker.com/black-hole-ima...878850941.html
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