Astronomy and Space

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EACLucifer
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Re: Astronomy and Space

Post by EACLucifer » Fri May 12, 2023 5:19 pm

Gfamily wrote:
Fri May 12, 2023 3:19 pm
monkey wrote:
Fri May 12, 2023 2:29 pm
Splodey.

clicky
If it 'splodes for more than 3 years, is it really a 'splodey thing?
even bigga 'splosion

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Re: Astronomy and Space

Post by monkey » Fri May 12, 2023 5:43 pm

Gfamily wrote:
Fri May 12, 2023 3:19 pm
monkey wrote:
Fri May 12, 2023 2:29 pm
Splodey.

clicky
If it 'splodes for more than 3 years, is it really a 'splodey thing?
That did cross my mind.

But the headine said explosion, and I like writing splodey. Pretty sure the astronomer that I heard on the radio earlier described it as an explosion too.

So when does an explosion stop being an explosion?

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Re: Astronomy and Space

Post by jimbob » Fri May 12, 2023 9:09 pm

EACLucifer wrote:
Fri May 12, 2023 5:19 pm
Gfamily wrote:
Fri May 12, 2023 3:19 pm
monkey wrote:
Fri May 12, 2023 2:29 pm
Splodey.

clicky
If it 'splodes for more than 3 years, is it really a 'splodey thing?
even bigga 'splosion
Yup, I think, that 30Bn X the average power of the Sun in a volume of only 100 solar systems is pretty splody. 3 years is not long for an shockwave from an explosion to travel about 5x further than Voyager.
Have you considered stupidity as an explanation

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Re: Astronomy and Space

Post by Pishwish » Fri Jun 23, 2023 11:03 pm

NASA's Mars Sample Return mission is is already projected to cost $10 billion (and there are many reasons to think that it will cost much, much more.) linky.

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Re: Astronomy and Space

Post by dyqik » Thu Jun 29, 2023 12:11 am

The NanoGrav collaboration have detected a stochastic background of gravitational waves in the universe, via the variations in the timing of pulses from pulsars.

https://nanograv.org/news/2023Announcement

Which means the Unknown Pleasures album cover is relevant to known cosmology.

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Gfamily
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Re: Astronomy and Space

Post by Gfamily » Sat Jul 01, 2023 2:41 pm

A quick heads-up that the launch of the ESA Euclid telescope is due to be at 16:11 BST (15:11 UT) today.

It can be watched on the ESA youtube channel https://www.youtube.com/watch?v=ZyNEAEFh-Cc

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Re: Astronomy and Space

Post by shpalman » Wed Sep 06, 2023 8:08 pm

having that swing is a necessary but not sufficient condition for it meaning a thing
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Re: Astronomy and Space

Post by dyqik » Wed Sep 06, 2023 11:58 pm

XRISM (x-ray telescope) and SLIM (lunar mission) just launched from Japan.

Currently on intermission until the next maneuver.

https://youtu.be/Ej4ZMp4a2xw

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Re: Astronomy and Space

Post by dyqik » Thu Sep 07, 2023 12:03 am

PS, JAXA has the prettiest launch site.

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Re: Astronomy and Space

Post by dyqik » Tue Oct 31, 2023 6:07 pm

I got to see the Nancy Grace Roman space telescope being put together today
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Grumble
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Re: Astronomy and Space

Post by Grumble » Tue Oct 31, 2023 6:16 pm

Awesome stuff, what’s that going to do then?
where once I used to scintillate
now I sin till ten past three

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Re: Astronomy and Space

Post by dyqik » Tue Oct 31, 2023 7:13 pm

Grumble wrote:
Tue Oct 31, 2023 6:16 pm
Awesome stuff, what’s that going to do then?
Optical and infrared telescope with 1000x the field of view of Hubble.

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Grumble
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Re: Astronomy and Space

Post by Grumble » Tue Oct 31, 2023 7:14 pm

dyqik wrote:
Tue Oct 31, 2023 7:13 pm
Grumble wrote:
Tue Oct 31, 2023 6:16 pm
Awesome stuff, what’s that going to do then?
Optical and infrared telescope with 1000x the field of view of Hubble.
So more of a direct replacement/upgrade for Hubble than Webb was?
where once I used to scintillate
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Re: Astronomy and Space

Post by dyqik » Tue Oct 31, 2023 9:20 pm

Grumble wrote:
Tue Oct 31, 2023 7:14 pm
dyqik wrote:
Tue Oct 31, 2023 7:13 pm
Grumble wrote:
Tue Oct 31, 2023 6:16 pm
Awesome stuff, what’s that going to do then?
Optical and infrared telescope with 1000x the field of view of Hubble.
So more of a direct replacement/upgrade for Hubble than Webb was?
Sort of, but not completely.

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Re: Astronomy and Space

Post by JQH » Wed Nov 01, 2023 12:34 pm

Planned attempt to collect samples from Phobos and return them to Earth.

https://www.space.com/mars-moons-phobos ... rWnS1bgOnM
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Re: Astronomy and Space

Post by dyqik » Wed Nov 15, 2023 10:45 pm

I just submitted* a billion dollar proposal to build a space telescope.

* I'm a co-I, and the PI is elsewhere and did the actual submitting.

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Grumble
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Re: Astronomy and Space

Post by Grumble » Thu Nov 16, 2023 7:23 am

dyqik wrote:
Wed Nov 15, 2023 10:45 pm
I just submitted* a billion dollar proposal to build a space telescope.

* I'm a co-I, and the PI is elsewhere and did the actual submitting.
Good luck! What’s it for?
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discovolante
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Re: Astronomy and Space

Post by discovolante » Thu Nov 16, 2023 7:59 am

dyqik wrote:
Wed Nov 15, 2023 10:45 pm
I just submitted* a billion dollar proposal to build a space telescope.

* I'm a co-I, and the PI is elsewhere and did the actual submitting.
Pfft, that's only £800,000,000 :P
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Martin Y
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Re: Astronomy and Space

Post by Martin Y » Thu Nov 16, 2023 8:30 am

discovolante wrote:
Thu Nov 16, 2023 7:59 am
dyqik wrote:
Wed Nov 15, 2023 10:45 pm
I just submitted* a billion dollar proposal to build a space telescope.

* I'm a co-I, and the PI is elsewhere and did the actual submitting.
Pfft, that's only £800,000,000 :P
I idly wondered, just to put it in perspective, how much that works out at per head for the US. With a bit of rounding it's a very pleasing $ tree fiddy.

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Re: Astronomy and Space

Post by dyqik » Thu Nov 16, 2023 12:52 pm

Grumble wrote:
Thu Nov 16, 2023 7:23 am
dyqik wrote:
Wed Nov 15, 2023 10:45 pm
I just submitted* a billion dollar proposal to build a space telescope.

* I'm a co-I, and the PI is elsewhere and did the actual submitting.
Good luck! What’s it for?
A new far-infrared observatory, which would be the only way to observe in this wavelength range in the 2030s. We currently also can't observe in this range at the moment, since SOFIA was shutdown.

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Re: Astronomy and Space

Post by Pishwish » Sat Nov 18, 2023 2:04 pm

SpaceX have launched their starship superheavy. Appears successful so far, although the booster blew up shortly after stage separation. Will need to see if starship makes it to Hawaii.

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Re: Astronomy and Space

Post by Pishwish » Sat Nov 18, 2023 2:34 pm

Spoke too soon. Looks like the flight termination system activated and bits of starship will be coming down near the Turks and Caicos islands. So it looks like the raptor engines worked (at least up to stage separation), hot staging probably worked, the flight termination systems worked ( assuming they had valid reasons to fire.) It will be interesting to see if the pad took any damage and why both stages were destroyed. It's a shame the heat shield wasn't tested and that there won't be much recovered hardware to examine.

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Re: Astronomy and Space

Post by Gfamily » Wed Nov 22, 2023 6:29 pm

This is how it was being done 50 years ago

A Youtube stream (about 30 minutes) on the Apollo Guidance Computer. It goes fast, so you might want to pause and replay bits - but it's an impressive piece of work.
https://www.youtube.com/watch?v=J-5aT2zSfSA
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Re: Astronomy and Space

Post by dyqik » Tue Nov 28, 2023 8:12 pm

Some of youse might be in the right place to see Betelgeuse disappear (well, reduce in brightness by 93%) for ten minutes on Dec 12th. - https://www.asteroidoccultation.com/202 ... _82912.htm

You can bring it back by saying its name three times.

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Re: Astronomy and Space

Post by Gfamily » Wed Nov 29, 2023 9:40 pm

A heads-up for this Friday and Saturday night if it's clear, that there may be an exceptional meteor shower from the Andromedids this year.

These are a shower that are associated with Comet Biela, The comet itself broke up in the mid 19th century, but this Friday/Saturday we pass through the path of its passage in 1649 - and this might lead to a shower with several hundred meteors visible per hour. The radiant is in the constellation Andromeda - but the meteors may be sighted anywhere in the sky.

The peak is expected for Saturday, but it might be worth looking for them on the Friday as well. Good luck with the weather.
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!

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