High cost astronomy

[Jlabute]

i am very curious about astronomy and stuff, if u do too check this artcle out, it is nice to read https://www.space.com/spaceflight-destr ... lood-cells

That is interesting. Thanks. I think I'll stay on earth and use telescopes instead :-)

[JagXKR]

https://www.nasa.gov/press-release/nasa ... ccessfully

The picture is astounding.
The distant galaxies in the background just photobombing the image of the star.
If you click on the image and download, it's a monster in size.
5437x3438 pixels.
This is a 50% jpg conversion from png

[Catsumi]

Wow! That is astoundingly beautiful. ^^^^^

Thanks for posting it JagXKR

[Fancy]

Me too - impressive

[GordonH]

It would be interesting what kind of images the James Webb would get of the centre of our galaxy.
https://www.castanet.net/news/Skywatchi ... Black-Hole

[JagXKR]

It would be interesting what kind of images the James Webb would get of the centre of our galaxy.
https://www.castanet.net/news/Skywatchi ... Black-Hole

Interesting you bring this up. JWST will be assisting the EHT team in bringing a sharper image to Sgr A*.
https://webbtelescope.org/contents/news ... s-2021-053

In its first year of operations, NASA’s James Webb Space Telescope will join forces with a global collaborative effort to create an image of the area directly surrounding the supermassive black hole at the heart of our Milky Way galaxy. The Event Horizon Telescope (EHT) is famous for its first image of the “shadow” of the black hole at the core of galaxy M87, and it has now turned its efforts to the more complex environment of Sagittarius A*, the Milky Way’s supermassive black hole. While M87’s core presented a steady target, Sagittarius A* exhibits mysterious flickering flares on an hourly basis, which make the imaging process much more difficult. Webb will assist with its own infrared images of the black hole region, providing data about when flares are present that will be a valuable reference to the EHT team.

[JagXKR]

7:30am PDT. Official public release of first image. Images? What of? Tune in to see.
https://www.youtube.com/watch?v=nmMRMIE3MGw
https://www.nasa.gov/nasalive

[Catsumi]

7:30am PDT. Official public release of first image. Images? What of? Tune in to see.
https://www.youtube.com/watch?v=nmMRMIE3MGw
https://www.nasa.gov/nasalive

Just post them Jag, my memory ain’t what it used to be.

[Babba_not_Gump]

Just how Earth shattering will these announcements and pictures be?

What are they seeing?

One scientist described it this way,
"It's like being in a room that is very dark and you only have a little pinhole you can look through," he said, of current technology. Now, with Webb, "You've opened a huge window, you can see all the little details."
https://phys.org/news/2022-06-webb-tele ... epest.html

Another quote,
...as well as the spectrum of an atmosphere around an exoplanet. By looking in the infrared, Webb will be able to identify the fingerprints of small molecules, such as carbon dioxide and ozone, that will offer meaningful clues about the habitability of worlds around other stars.
https://arstechnica.com/science/2022/06 ... telescope/

Fascinating times we live in.

[Jlabute]

Just how Earth shattering will these announcements and pictures be?

What are they seeing?

One scientist described it this way,
"It's like being in a room that is very dark and you only have a little pinhole you can look through," he said, of current technology. Now, with Webb, "You've opened a huge window, you can see all the little details."
https://phys.org/news/2022-06-webb-tele ... epest.html

Another quote,
...as well as the spectrum of an atmosphere around an exoplanet. By looking in the infrared, Webb will be able to identify the fingerprints of small molecules, such as carbon dioxide and ozone, that will offer meaningful clues about the habitability of worlds around other stars.
https://arstechnica.com/science/2022/06 ... telescope/

Fascinating times we live in.

That’s my understanding as well, a much higher resolution and s/n ratio than that of the spitzer IR telescope.

[Jlabute]

Just curious, has anyone heard of this? Jag? This is relatively 'old' news in regards to snowballs (icy comets) the size of houses constantly breaking up in earths atmosphere. If true, that deposits plenty of water over time.

http://smallcomets.physics.uiowa.edu/

[JagXKR]

I had heard of this theory but I believe the total number and size is over estimated.
Comets with high water content are generally brighter and therefore more easily spotted by amateur and professional astronomers.
If true, we would see far more amateurs spotting these bright objects heading towards us.
There are 2 major theories regarding water on Earth. Comets or Asteroids. The comet theory has one flaw, deuterium. They contain way more than what we have on Earth. The Asteroid theory, in which Jupiter ploughed through the the Asteroid Belt and brought havoc upon the solar system seems more realistic as Asteroids have a more compatible deuterium/hydrogen ratio.
Remember though, these are theories and as more information is gathered the more the theories change and/or get dismissed or accepted.
I believe the Asteroid theory.
For now.

[Jlabute]

Right. I would had thought the same, seeing that is what a lot of the community says.
Of course, who is to say the smaller comets have the same chemistry. It is an interesting theory. Is this how some noctilucent clouds are formed? etc. Depite that, it seems as though we should hear of more detections, or news in regards to this, unless they are very hard to detect?

How much water do the small comets add to the Earth's surface?

At a rate of one 20-to-40 ton comet every three seconds, this influx of small comets into the atmosphere would add about one inch of water to the Earth's surface every 20,000 years or so. The implications of this added water for long range global climate, global warming, and pollution mitigation will need to be examined by the experts in those fields.

http://smallcomets.physics.uiowa.edu/faq.htmlx

[JagXKR]

Sneak peek?
Image captured during a stability test.
https://www.nasa.gov/image-feature/coun ... rst-images

There are only a handful of stars in this image – distinguished by their diffraction spikes. The rest of the objects are thousands of faint galaxies, some in the nearby universe, but many, many more in the high redshift universe.

[captkirkcanada]

It would be interesting what kind of images the James Webb would get of the centre of our galaxy.
https://www.castanet.net/news/Skywatchi ... Black-Hole

how do you know its not fake pics?