Astronomy and Space
- basementer
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Re: Astronomy and Space
Rather nice grouping of the crescent moon above Jupiter and Saturn this evening.
Money is just a substitute for luck anyway. - Tom Siddell
Re: Astronomy and Space
Keep an eye out on the great conjunction of Jupiter and Saturn on Monday - the closest they've been since 1623 - but that was too close to the Sun to have been visible, so the closest visible conjunction since 4th March 1226 (25th Feb Old Calendar).basementer wrote: ↑Thu Dec 17, 2020 9:46 amRather nice grouping of the crescent moon above Jupiter and Saturn this evening.
My avatar was a scientific result that was later found to be 'mistaken' - I rarely claim to be 100% correct
ETA 5/8/20: I've been advised that the result was correct, it was the initial interpretation that needed to be withdrawn
Meta? I'd say so!
ETA 5/8/20: I've been advised that the result was correct, it was the initial interpretation that needed to be withdrawn
Meta? I'd say so!
- shpalman
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Re: Astronomy and Space
The weather's being sh.t and the conjunction is happening in the wrong bit of sky for me to be able to see anything from here anyway.
having that swing is a necessary but not sufficient condition for it meaning a thing
@shpalman@mastodon.me.uk
@shpalman@mastodon.me.uk
- snoozeofreason
- Snowbonk
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Re: Astronomy and Space
Due to the time of year, any discussion of this on the media is accompanied by a mandatory attempt to link it to the star of Bethlehem. No one points out that people in the classical era were perfectly capable of working out where the planets would appear in the sky, so any genuinely wise man from the east would have just gone "Ahem, I think you'll find that this 'mysterious star' is actually a conjunction of Jupiter and Saturn."Gfamily wrote: ↑Thu Dec 17, 2020 10:47 amKeep an eye out on the great conjunction of Jupiter and Saturn on Monday - the closest they've been since 1623 - but that was too close to the Sun to have been visible, so the closest visible conjunction since 4th March 1226 (25th Feb Old Calendar).basementer wrote: ↑Thu Dec 17, 2020 9:46 amRather nice grouping of the crescent moon above Jupiter and Saturn this evening.
In six days the Lord made the heavens and the earth, the sea, and all that is in them. The human body was knocked up pretty late on the Friday afternoon, with a deadline looming. How well do you expect it to work?
Re: Astronomy and Space
I need to chop down a few trees and demolish a tower block.
And remember that if you botch the exit, the carnival of reaction may be coming to a town near you.
Fintan O'Toole
Fintan O'Toole
- shpalman
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Re: Astronomy and Space
The whole thing about the star and the wise men was made up by whoever wrote the gospel of Matthew, along with the whole thing about Herod killing all the children under two years old, to make Jesus seem more important to his target audience.snoozeofreason wrote: ↑Sun Dec 20, 2020 3:26 pmDue to the time of year, any discussion of this on the media is accompanied by a mandatory attempt to link it to the star of Bethlehem. No one points out that people in the classical era were perfectly capable of working out where the planets would appear in the sky, so any genuinely wise man from the east would have just gone "Ahem, I think you'll find that this 'mysterious star' is actually a conjunction of Jupiter and Saturn."Gfamily wrote: ↑Thu Dec 17, 2020 10:47 amKeep an eye out on the great conjunction of Jupiter and Saturn on Monday - the closest they've been since 1623 - but that was too close to the Sun to have been visible, so the closest visible conjunction since 4th March 1226 (25th Feb Old Calendar).basementer wrote: ↑Thu Dec 17, 2020 9:46 amRather nice grouping of the crescent moon above Jupiter and Saturn this evening.
But a wise man from the east would have noticed the conjunction of two wandering stars to be particularly portentious in terms of probably having to make changes at work but be ready for a surprise in your love life or something.
having that swing is a necessary but not sufficient condition for it meaning a thing
@shpalman@mastodon.me.uk
@shpalman@mastodon.me.uk
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- Snowbonk
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Re: Astronomy and Space
Saw the conjunction last night, just after sunset. Jupiter and Saturn were one point of light to the naked eye, but easy separated with binoculars.
Here grows much rhubarb.
- basementer
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Re: Astronomy and Space
I've seen them! The sky was clear briefly before they set - Saturn in the background with visible rings, and Jupiter with two crisp Galilean moons all together in the same field of view. "Once in a lifetime" is an understatement.
Money is just a substitute for luck anyway. - Tom Siddell
Re: Astronomy and Space
We saw them on Sunday, through binoculars and a small telescope at 52x magnification.
If I make it to my 101st birthday, there's another decent conjunction of the two in April 2060 (just over 1 degree apart).
If I make it to my 101st birthday, there's another decent conjunction of the two in April 2060 (just over 1 degree apart).
My avatar was a scientific result that was later found to be 'mistaken' - I rarely claim to be 100% correct
ETA 5/8/20: I've been advised that the result was correct, it was the initial interpretation that needed to be withdrawn
Meta? I'd say so!
ETA 5/8/20: I've been advised that the result was correct, it was the initial interpretation that needed to be withdrawn
Meta? I'd say so!
Re: Astronomy and Space
It seems that SpaceX has plans for its next launcher to 'be caught by the launch tower' rather than having its own landing legs.
Given the precision they seem to be achieving with their landings so far, this doesn't seem unreasonable, but it does show how much they have achieved in changing what can be done.
It's even being suggested that they could have a turn-around time of hours between landing and re-launching.
https://techcrunch.com/2020/12/30/elon- ... unch-tower
Given the precision they seem to be achieving with their landings so far, this doesn't seem unreasonable, but it does show how much they have achieved in changing what can be done.
It's even being suggested that they could have a turn-around time of hours between landing and re-launching.
https://techcrunch.com/2020/12/30/elon- ... unch-tower
My avatar was a scientific result that was later found to be 'mistaken' - I rarely claim to be 100% correct
ETA 5/8/20: I've been advised that the result was correct, it was the initial interpretation that needed to be withdrawn
Meta? I'd say so!
ETA 5/8/20: I've been advised that the result was correct, it was the initial interpretation that needed to be withdrawn
Meta? I'd say so!
Re: Astronomy and Space
It could be even faster with a post bag/train system and a trampoline.Gfamily wrote: ↑Fri Jan 01, 2021 10:22 amIt seems that SpaceX has plans for its next launcher to 'be caught by the launch tower' rather than having its own landing legs.
Given the precision they seem to be achieving with their landings so far, this doesn't seem unreasonable, but it does show how much they have achieved in changing what can be done.
It's even being suggested that they could have a turn-around time of hours between landing and re-launching.
https://techcrunch.com/2020/12/30/elon- ... unch-tower
- shpalman
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Re: Astronomy and Space
having that swing is a necessary but not sufficient condition for it meaning a thing
@shpalman@mastodon.me.uk
@shpalman@mastodon.me.uk
- basementer
- Dorkwood
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Re: Astronomy and Space
I think they faked the colour, it's really monochrome.
Money is just a substitute for luck anyway. - Tom Siddell
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- Catbabel
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Re: Astronomy and Space
That is very cool indeed (no pun intended). Thanks for that.
AvP
Re: Astronomy and Space
I'm not exactly sure how the image was created, but there's some detail here...
https://physics.stackexchange.com/quest ... of-the-sun
It's a very low resolution image though - the neutrino source in the Sun subtends an angle of about only about 3 arc minutes (1/20th of a degree), whereas the 'image of the source' subtends about 30 degrees.
Fascinating fact - the energy generation per cubic metre in the Sun is less than the heat energy generated in a well managed compost heap.
https://physics.stackexchange.com/quest ... of-the-sun
It's a very low resolution image though - the neutrino source in the Sun subtends an angle of about only about 3 arc minutes (1/20th of a degree), whereas the 'image of the source' subtends about 30 degrees.
Fascinating fact - the energy generation per cubic metre in the Sun is less than the heat energy generated in a well managed compost heap.
My avatar was a scientific result that was later found to be 'mistaken' - I rarely claim to be 100% correct
ETA 5/8/20: I've been advised that the result was correct, it was the initial interpretation that needed to be withdrawn
Meta? I'd say so!
ETA 5/8/20: I've been advised that the result was correct, it was the initial interpretation that needed to be withdrawn
Meta? I'd say so!
Re: Astronomy and Space
The volume to surface area thing works wonders.Gfamily wrote: ↑Sun Jan 03, 2021 4:50 pmI'm not exactly sure how the image was created, but there's some detail here...
https://physics.stackexchange.com/quest ... of-the-sun
It's a very low resolution image though - the neutrino source in the Sun subtends an angle of about only about 3 arc minutes (1/20th of a degree), whereas the 'image of the source' subtends about 30 degrees.
Fascinating fact - the energy generation per cubic metre in the Sun is less than the heat energy generated in a well managed compost heap.
Re: Astronomy and Space
ICYMI
New Shepard had a test launch yesterday - filmed by a drone from above.
https://twitter.com/i/status/1350084147935494144
New Shepard had a test launch yesterday - filmed by a drone from above.
https://twitter.com/i/status/1350084147935494144
My avatar was a scientific result that was later found to be 'mistaken' - I rarely claim to be 100% correct
ETA 5/8/20: I've been advised that the result was correct, it was the initial interpretation that needed to be withdrawn
Meta? I'd say so!
ETA 5/8/20: I've been advised that the result was correct, it was the initial interpretation that needed to be withdrawn
Meta? I'd say so!
Re: Astronomy and Space
Anyone else watching the test fire? Of the new NASA engines
where once I used to scintillate
now I sin till ten past three
now I sin till ten past three
Re: Astronomy and Space
They actually fired, but cut it short. Ah well. I guess it’s a step on the road.
where once I used to scintillate
now I sin till ten past three
now I sin till ten past three
Re: Astronomy and Space
I don't know who here has seen Luke Jerram's amazing "Museum of the Moon" and "Gaia" artworks (7 metre globes of the Moon and Earth respectively).
Anyhow, he's now* produced a Mars globe. Can't wait to see it.
It's being promoted by UK Space at the Natural History Museum in advance of the landing of Perseverance mission on the Moon
* ETA - apparently - this was 'now' in 2019
Anyhow, he's now* produced a Mars globe. Can't wait to see it.
It's being promoted by UK Space at the Natural History Museum in advance of the landing of Perseverance mission on the Moon
* ETA - apparently - this was 'now' in 2019
My avatar was a scientific result that was later found to be 'mistaken' - I rarely claim to be 100% correct
ETA 5/8/20: I've been advised that the result was correct, it was the initial interpretation that needed to be withdrawn
Meta? I'd say so!
ETA 5/8/20: I've been advised that the result was correct, it was the initial interpretation that needed to be withdrawn
Meta? I'd say so!
Re: Astronomy and Space
Is Perseverance going to the moon now?Gfamily wrote: ↑Fri Jan 29, 2021 10:03 pmI don't know who here has seen Luke Jerram's amazing "Museum of the Moon" and "Gaia" artworks (7 metre globes of the Moon and Earth respectively).
Anyhow, he's now* produced a Mars globe. Can't wait to see it.
It's being promoted by UK Space at the Natural History Museum in advance of the landing of Perseverance mission on the Moon
JL Mars.jpg
* ETA - apparently - this was 'now' in 2019
where once I used to scintillate
now I sin till ten past three
now I sin till ten past three
Re: Astronomy and Space
No idea what you meanGrumble wrote: ↑Fri Jan 29, 2021 10:26 pmIs Perseverance going to the moon now?Gfamily wrote: ↑Fri Jan 29, 2021 10:03 pmI don't know who here has seen Luke Jerram's amazing "Museum of the Moon" and "Gaia" artworks (7 metre globes of the Moon and Earth respectively).
Anyhow, he's now* produced a Mars globe. Can't wait to see it.
It's being promoted by UK Space at the Natural History Museum in advance of the landing of Perseverance mission on Mars
JL Mars.jpg
* ETA - apparently - this was 'now' in 2019
My avatar was a scientific result that was later found to be 'mistaken' - I rarely claim to be 100% correct
ETA 5/8/20: I've been advised that the result was correct, it was the initial interpretation that needed to be withdrawn
Meta? I'd say so!
ETA 5/8/20: I've been advised that the result was correct, it was the initial interpretation that needed to be withdrawn
Meta? I'd say so!
Re: Astronomy and Space
where once I used to scintillate
now I sin till ten past three
now I sin till ten past three
Re: Astronomy and Space
I'm not going to Mars. It's about to be eaten by that giant space-whale skellington.
Re: Astronomy and Space
SpaceX's SN9 lining up for a 10km altitude lift off and return - I assume they are hoping for some time today...
https://www.nasaspaceflight.com/2021/02 ... clearance/
https://www.nasaspaceflight.com/2021/02 ... clearance/
My avatar was a scientific result that was later found to be 'mistaken' - I rarely claim to be 100% correct
ETA 5/8/20: I've been advised that the result was correct, it was the initial interpretation that needed to be withdrawn
Meta? I'd say so!
ETA 5/8/20: I've been advised that the result was correct, it was the initial interpretation that needed to be withdrawn
Meta? I'd say so!