Thanks, Danik. I can't find any reference to diamonds in earth sky.org, but I still feel I had read something about this in a post somewhere.
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Thanks, Danik. I can't find any reference to diamonds in earth sky.org, but I still feel I had read something about this in a post somewhere.
DW
I found several references to the "diamond rain", though I didn´t look specifically in earth.sky. org. Most of the links I found are from former years, so you must have read about it indeed.
Here is a recent link about scientists recreating the diamond rain in a lab:
https://phys.org/news/2017-08-scient...icy-giant.html
Thanks for the link, Danik. This is pretty good. The article talks about diamond rain as being far inside the icy planets and their moons, so its about right I would say.
Again it seems that the physical concepts we learned at school, don´t work for other celestial bodies.
"A new hot Neptune may be a massive water world
HAT-P-26b is a steamy, steamy world."
http://www.astronomy.com/news/2017/0...may-host-water
That's right. There is clearly a huge diversity of planets, they can't be classified by what we have in the solar system.
Watch Asteroid "Florence" as it glides past Earth: https://www.universetoday.com/136981...earth-weekend/. It is pretty big, about 4.4 kilometres across. No danger of it crashing on earth, though.
Florence looks quite impressive. I hope it behaves well.
I'm pretty sure it will, its a long way from Earth and these days close attention is paid to all sizeable space rocks caught in orbit of the sun.
The Centre for Near-Earth Object Studies at NASA is an organisation that follows this: https://cneos.jpl.nasa.gov/news/news198.html
It is not clear how this sub-unit of NASA works. It may only have a couple of people keeping it going, with more drawn in if there should be an emergency. And does it consults with a Russian equivelent? Just a few years ago there was a meteor that grazed low over a Russian town. See the Chelybinsk Meteor: https://en.wikipedia.org/wiki/Chelyabinsk_meteor. In 1908 a large area of Russian forest was flattened: see https://en.wikipedia.org/wiki/Tunguska_event. This would be a good area for US/Russian collaboration.
Neither do I, DW. I only imagine that keeping this units must cost a lot of money.
I also have no idea about how the colaboration of astronomers US/Russia is today.
Just found this:
https://www.scientificamerican.com/a...enus-together/
So there is some colaboration.
That was in interesting link, Danik. The USSR sent several probes to Venus before the USSR collapsed. So its a good thing to see the research continued in collaboration between Russia and the USA.
Specially considering the current international political positions of both countries, I think.
Absolutely!
Interesting study on the biological importance of UV-rays. It is part to what I call "finding the way to the celestial India" because this all reminds me so much of the aims of the Great Navigations, when the Europeans found there way around in the oceans and eventually discovered other continents.
Ultra-violet light is particularly important for humans just as it says in the universe today website: https://www.universetoday.com/137023...hout-universe/
To be sure!
Here is another recent article that impressed me:
What lit up the universe? Black holes may have punctured darkened galaxies, allowing light to escape
Date:
August 30, 2017
Source:
University of Iowa
Summary:
Researchers have a new explanation for how the universe changed from darkness to light. They propose that black holes within galaxies produce winds strong enough to fling out matter that punctures holes in galaxies, allowing light to escape.
https://www.sciencedaily.com/release...0830114800.htm
Well, that was an unusual theory. We need more research to buttress the theory.
And here it comes:
Universe Today has two postings on the Milky Way's massive double black holes, and a theory of how the universe became filled with light, many eons after the Big Bang:
https://www.universetoday.com/137062...und-milky-way/
https://www.universetoday.com/137048...-filled-light/
Universe Today has two postings on the Milky Way's massive double black holes, and a theory of how the universe became filled with light, many eons after the Big Bang:
https://www.universetoday.com/137062...und-milky-way/
https://www.universetoday.com/137048...-filled-light/
Amazing! The swallowing black holes as a source of universal light! And the study seems to be recent. Summing it up:
"As Philip Kaaret, a professor in the UI Department of Physics and Astronomy and the lead author on the study, explained:
'The observations show the presence of very bright X-ray sources that are likely accreting black holes. It’s possible the black hole is creating winds that help the ionizing radiation from the stars escape. Thus, black holes may have helped make the universe transparent.'
And again:
“As matter falls into a black hole, it starts to spin and the rapid rotation pushes some fraction of the matter out. They’re producing these strong winds that could be opening an escape route for ultraviolet light. That could be what happened with the early galaxies.”
https://www.universetoday.com/137048...-filled-light/
Yes, its amazing how much we are starting to learn about these odd things like black holes and the Milky Way and how it is changing and evolving.
The evolution of the Milky Way, if this theory is correct, puts an extra dimension on evolution. Gives a history to what happened next.
Yes, I read that article too. What gets me most is the imaginative power that is behind all those researches. I think that is the point that links this tread to literature. I am very glad you opened it, because I am learning a lot about the interplanetary world.
Yes, it is very complex out there. Fascinating, too!
The next post on universetoday.com follows up on the previous post. Quasars:
"Back in the 1950s, astronomers scanned the skies using radio telescopes, and found a class of bizarre objects in the distant Universe. They were very bright, and incredibly far away; hundreds of millions or even billion of light-years away. The first ones were discovered in the radio spectrum, but over time, astronomers found even more blazing in the visible spectrum.
The astronomer Hong-Yee Chiu coined the term “quasar”, which stood for quasi-stellar object. They were like stars, shining from a single point source, but they clearly weren’t stars, blazing with more radiation than an entire galaxy."
The rest of the post needs also to be read:
https://www.universetoday.com/137069...es-came-first/
Thanks, DW.
Here is a related article. Black holes are definitely the current "stars":
https://www.sciencedaily.com/release...0901135518.htm
sciencedaily.com looks to be a good site to follow...
There are four or five similar astronomy sites. Here is another one:
https://phys.org/space-news/astronomy/
Yes, its getting to the point where we have to choose which site(s) to follow.
For many years I followed this website: https://www.space.com/.
But since I stopped for a couple of months I don't follow this site. Pity...
I usually choose the most interesting news from any of these sites. On first sight, all these sites seem to base the news on research. I mean they are not sensationalistic.
I think you can subscribe for their newsletter again, any time you want.Quote:
Originally Posted by Dreamwoven
Yes, I know. I must go back to following space.com, it really is an excellent site.
A bit of plutonian geography. You never know when you will need it ;):
Pluto features given first official names
Date:
September 7, 2017
Source:
International Astronomical Union
Summary:
The Working Group for Planetary System Nomenclature of the International Astronomical Union has officially approved the naming of 14 features on the surface of Pluto. These are the first geological features on the planet to be named following the close flyby by the New Horizons spacecraft in July 2015.
https://www.sciencedaily.com/release...0907112411.htm
I rather like the planet Pluto, the outermost planet (as far as we know).
http://earthsky.org/space/nasa-cassi...mission-legacy
Some of the lessons of the hugely successful Saturn Mission!
I read it. Discovering a planet with ideal life conditions seems to have become a scientific obssession.
Uranus is a dangerous place for its moons
In a few million years, things are going to get ugly.
By Alison Klesman | Published: Monday, September 11, 2017
"Discovered in 1781, Uranus is an ice giant orbiting our Sun once every 84 Earth years. This mysterious world, which appears as just a tiny dot in most amateur telescopes, not only possesses a system of thin, faint rings, but also 27 moons (by our current count). However, at least one of those things is destined to change: new measurements indicate at least two likely collisions between four of the planet’s moons millions of years in the future."
http://www.astronomy.com/news/2017/0...olliding-moons
We need to be reminded how little we know about our own solar system. Uranus is largely unexplored and has many moons of its own. See http://earthsky.org/space/nasa-cassi...mission-legacy