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Space and Astronomy Thread |
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#2801 |
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Join Date: Jul 2010
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Jupiter and Venus last week. Soo close... I wish I had telescope person handy..
Mr g he was in bed..It was so lovely...
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#2802 |
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Join Date: May 2003
Location: The Green Hills of Earth
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#2803 |
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Join Date: Jul 2010
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[quote=glitterlady08;78908322]Jupiter and Venus last week. Soo close... I wish I had telescope person handy..
Mr g he was in bed..It was so lovely... [/QUOJUPITER IN LEO ..... Almost coming to the end...
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#2804 |
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Join Date: Apr 2009
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Quote:
Can't wait to see Pluto in greater detail. |
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#2805 |
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Inactive Member
Join Date: Jul 2009
Location: Taedet animam meam vitae
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Quote:
Is it just me or does that band of "patterned terrain" look like a row of craters?
Can't wait to see Pluto in greater detail. |
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#2806 |
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Quote:
I agree, but then they could be something else entirely. The surface looks covered in these roundish features so maybe it'll have a similar terrain to somewhere like Mercury.
An example of what Humanity is truly capable of when on a quest for scientific knowledge. ![]() http://phenomena.nationalgeographic....-jupiter-pics/ |
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#2807 |
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Join Date: Apr 2009
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This week is going to be simply incredible.
An example of what Humanity is truly capable of when on a quest for scientific knowledge. ![]() http://phenomena.nationalgeographic....-jupiter-pics/ I think we're going to be in for a lot of surprises from Pluto.
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#2808 |
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Join Date: Feb 2014
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I'm like a four year old waiting for Christmas
I think we're going to be in for a lot of surprises from Pluto.Rather sad to think that this (I think) will be the last mission to the outer solar system for many years. I remember watching the images from Voyager 2 as a kid. Awesome stuff.
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#2809 |
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#2810 |
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New Horizons: Last view of Pluto's Spots
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#2811 |
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"The vast distance to Pluto - some 4.7bn km - means bit rates are extremely slow, and it will take a full 16 months for everything seen in the next few days to trickle back to Earth."Still a while to wait then. |
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#2812 |
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Join Date: May 2004
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This thread will go insane!
Rather sad to think that this (I think) will be the last mission to the outer solar system for many years. I remember watching the images from Voyager 2 as a kid. Awesome stuff. ![]() Linklet: Emily Lakdawalla’s Pluto Preview Quote:
That is quite fortuitous and the results of that airborne telescope analyis will complement the data coming in from New Horizons so an even more complete understanding of Pluto will be obtained.Quote:
Yes, and the terrain at the top of that picture resembles the surface of that other Kuiper Belt Object, Neptune's captured satellite Triton - links below:http://photojournal.jpl.nasa.gov/jpeg/PIA00340.jpg https://en.wikipedia.org/wiki/Kuiper_belt#Triton https://en.wikipedia.org/wiki/Triton_%28moon%29 |
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#2813 |
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Join Date: Feb 2014
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Quote:
However, the good news is that it's not the end of the New Horizons probe. The Hubble Space Telescope has been used to identify two promising small, icy worldlets (less than 100km diameter), KBO PT1 and KBO PT3, and New Horizons can reach either (but not both) with a small course correction leading to a rendezvous in 2018-2019.
Linklet: Emily Lakdawalla’s Pluto Preview That is quite fortuitous and the results of that airborne telescope analyis will complement the data coming in from New Horizons so an even more complete understanding of Pluto will be obtained. Yes, and the terrain at the top of that picture resembles the surface of that other Kuiper Belt Object, Neptune's captured satellite Triton - links below: http://photojournal.jpl.nasa.gov/jpeg/PIA00340.jpg https://en.wikipedia.org/wiki/Kuiper_belt#Triton https://en.wikipedia.org/wiki/Triton_%28moon%29 Still hoping against hope for a huge Black Monolith to be discovered one day though.
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#2814 |
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If neither the Voyager nor Galileo probes found anything like a Monolith at Jupiter, I don't know how you would expect New Horizons to find one at Pluto! (Unless there was a second Monolith found there in the 2061/ 3001 Odyssey books that I've forgotten about!)
I'm still hoping that NH will in fact discover Charon to be a Mass Relay...
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#2815 |
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Quote:
Yes - I am very glad that they have been able to identify some more viable Kuiper belt objects for New Horizons to visit.
Reflected sunlight measured in the infrared spectrum has already provided some interesting results because surface composition data can be obtained. If we look at the infrared spectra for Triton and Pluto http://cdn.iopscience.com/images/000...28159f5_lr.jpg and Pluto and Eris https://upload.wikimedia.org/wikiped...pectrum_pt.PNG, we can see that they're very similar to each other in apparent surface composition and they might also have similar internal structures too as this ilustration shows: http://www.skyandtelescope.com/wp-co..._interiors.jpg In other dwarf world news, it appears that the bright crustal spots on Ceres might be due to salt deposition from water (geysir?) evaporation or direct ice sublimation: http://www.washingtonpost.com/news/s...ice-after-all/ |
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#2816 |
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Well, everybody can breathe again because New Horizons checked in as expected at about 2am this morning, alive and well and with a full set of data on board. How soon do we get to see the first close-ups?
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#2817 |
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Inactive Member
Join Date: Jul 2009
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Quote:
Well, everybody can breathe again because New Horizons checked in as expected at about 2am this morning, alive and well and with a full set of data on board. How soon do we get to see the first close-ups?
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#2818 |
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Join Date: Dec 2004
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Quote:
Well, everybody can breathe again because New Horizons checked in as expected at about 2am this morning, alive and well and with a full set of data on board. How soon do we get to see the first close-ups?
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#2819 |
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I was wondering about that. Apparently the bitrate is so low that it will take 16 months to retrieve all the data. I would imagine there is some kind of prioritisation scheme, so that the data expected to be most valuable is sent first. It would be terrible if the probe failed before it had got to the best stuff!
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#2820 |
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#2821 |
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One question having seen the ice mountains on Pluto appearing to cast shadows in the new image. How is that possible? The Sun is surely so far away that there cannot be any chance of it casting shadows on Pluto, or am I wrong?
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#2822 |
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One question having seen the ice mountains on Pluto appearing to cast shadows in the new image. How is that possible? The Sun is surely so far away that there cannot be any chance of it casting shadows on Pluto, or am I wrong?
The Sun seen from Pluto would be tiny, but still far brighter than anything else in the Sky, and it would deliver more light than we get on Earth from a full moon. |
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#2823 |
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One question having seen the ice mountains on Pluto appearing to cast shadows in the new image. How is that possible? The Sun is surely so far away that there cannot be any chance of it casting shadows on Pluto, or am I wrong?
http://solarsystem.nasa.gov/plutotime/ Input your location and it'll tell you when on Earth it will be as bright as it is on Pluto at noon. I tried it and it said that noon on Pluto would appear to be as bright as just before 10pm where I live (which is further south than the UK and so it stays brighter longer). |
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#2824 |
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The planet Venus is bright enough to cast shadows on Earth. It's quite difficult to demonstrate, but I have seen images of it. The Sun is much brighter in Pluto's sky.
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#2825 |
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Join Date: Apr 2009
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I found this the other day, it shows which space probes are currently talking to NASA's ground stations http://eyes.nasa.gov/dsn/dsn.html New Horizons has been busy sending stuff all day at a whopping 2.11kb/sec
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