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Re: Astronomy and Space
Posted: Fri May 12, 2023 5:19 pm
by EACLucifer
Gfamily wrote: ↑Fri May 12, 2023 3:19 pm
If it 'splodes for more than 3 years, is it really a 'splodey thing?
even bigga 'splosion
Re: Astronomy and Space
Posted: Fri May 12, 2023 5:43 pm
by monkey
Gfamily wrote: ↑Fri May 12, 2023 3:19 pm
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?
Re: Astronomy and Space
Posted: Fri May 12, 2023 9:09 pm
by jimbob
EACLucifer wrote: ↑Fri May 12, 2023 5:19 pm
Gfamily wrote: ↑Fri May 12, 2023 3:19 pm
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.
Re: Astronomy and Space
Posted: Fri Jun 23, 2023 11:03 pm
by Pishwish
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.
Re: Astronomy and Space
Posted: Thu Jun 29, 2023 12:11 am
by dyqik
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.
Re: Astronomy and Space
Posted: Sat Jul 01, 2023 2:41 pm
by Gfamily
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
There are two primary areas of investigation
- Dark Energy.
- Dark Matter.
Re: Astronomy and Space
Posted: Wed Sep 06, 2023 8:08 pm
by shpalman
Re: Astronomy and Space
Posted: Wed Sep 06, 2023 11:58 pm
by dyqik
XRISM (x-ray telescope) and SLIM (lunar mission) just launched from Japan.
Currently on intermission until the next maneuver.
https://youtu.be/Ej4ZMp4a2xw
Re: Astronomy and Space
Posted: Thu Sep 07, 2023 12:03 am
by dyqik
PS, JAXA has the prettiest launch site.
Re: Astronomy and Space
Posted: Tue Oct 31, 2023 6:07 pm
by dyqik
I got to see the Nancy Grace Roman space telescope being put together today
Re: Astronomy and Space
Posted: Tue Oct 31, 2023 6:16 pm
by Grumble
Awesome stuff, what’s that going to do then?
Re: Astronomy and Space
Posted: Tue Oct 31, 2023 7:13 pm
by dyqik
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.
Re: Astronomy and Space
Posted: Tue Oct 31, 2023 7:14 pm
by Grumble
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?
Re: Astronomy and Space
Posted: Tue Oct 31, 2023 9:20 pm
by dyqik
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.
Re: Astronomy and Space
Posted: Wed Nov 01, 2023 12:34 pm
by JQH
Planned attempt to collect samples from Phobos and return them to Earth.
https://www.space.com/mars-moons-phobos ... rWnS1bgOnM
Re: Astronomy and Space
Posted: Wed Nov 15, 2023 10:45 pm
by dyqik
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.
Re: Astronomy and Space
Posted: Thu Nov 16, 2023 7:23 am
by Grumble
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?
Re: Astronomy and Space
Posted: Thu Nov 16, 2023 7:59 am
by discovolante
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
Re: Astronomy and Space
Posted: Thu Nov 16, 2023 8:30 am
by Martin Y
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
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.
Re: Astronomy and Space
Posted: Thu Nov 16, 2023 12:52 pm
by dyqik
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.
Re: Astronomy and Space
Posted: Sat Nov 18, 2023 2:04 pm
by Pishwish
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.
Re: Astronomy and Space
Posted: Sat Nov 18, 2023 2:34 pm
by Pishwish
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.
Re: Astronomy and Space
Posted: Wed Nov 22, 2023 6:29 pm
by Gfamily
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
Re: Astronomy and Space
Posted: Tue Nov 28, 2023 8:12 pm
by dyqik
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.
Re: Astronomy and Space
Posted: Wed Nov 29, 2023 9:40 pm
by Gfamily
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.