Speaking of dangers, a huge supernova explosion has been discovered (ASASSN-15lh). Fortunately, it is 3.4 billions of light years away. If it happened in our galaxy, we would have no chance of survival. It is equivalent to 570 billion Suns.
Tullio

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I live now near Milano, where the main danger is smog produced by Diesel autos and trucks, combined with the low winds of the Po valley. Milano was out of the permissible smog limits for more than one month. Now it got some wind and clean air.
Tullio

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Speaking of dangers, a huge supernova explosion has been discovered (ASASSN-15lh). Fortunately, it is 3.4 billions of light years away. If it happened in our galaxy, we would have no chance of survival. It is equivalent to 570 billion Suns.
Tullio

you mean it would spit on us GRB or from a "shock wave"?!
;)

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non-profit org. Play4Life in Zagreb, Croatia, EU

X-rays and gamma-rays.Maybe also other massive particles.
Tullio
Also gravitational waves and neutrinos.

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X-rays and gamma-rays.Maybe also other massive particles.
Tullio
Also gravitational waves and neutrinos.

aren't the most of them bursted from polar regions of Hypernova star?
;)

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non-profit org. Play4Life in Zagreb, Croatia, EU

It could be a magnetar. In that case, yes.
Tullio

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It could be a magnetar. In that case, yes.
Tullio

Magnetars are so new types of stars, that we just don't know much about them...they are a rare breed of pulsars...
But we found one in Milky way:
https://www.mpg.de/7502957/magnetar_milkyway
;)

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non-profit org. Play4Life in Zagreb, Croatia, EU

again they talk about PlanetX!
http://www.sciencemag.org/news/2016/01/feature-astronomers-say-neptune-sized-planet-lurks-unseen-solar-system?utm_content=buffer59a3e&utm_medium=social&utm_source=facebook.com&utm_campaign=buffer
I'm betting in a "chevapchichi" that there's nothing there!!!

why?
WISE didn't found it...but found a Brown dwarf in neighborhood!
;)

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non-profit org. Play4Life in Zagreb, Croatia, EU

WISE didn't found it...but found a Brown dwarf in neighborhood!

Yes. 7.2 light years away from the Sun.
Since WISE has detected so many other objects in our neighborhood it's unlikely that PlanetX, AKA Nibiru, should be missed.

Chevapchichi. Yummie:)

So WISE has seen everything there is to see and ALL of it's data has been analyzed?
I had no idea.

So WISE has seen everything there is to see and ALL of it's data has been analyzed?
I had no idea.

not actually...all DATA has been analysed from NEO-WISE mission!

there are still some smaller rocks to be found...
that doesn't account of a large PlanetX! it would be visible on NEO-WISE scanner!
;)

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non-profit org. Play4Life in Zagreb, Croatia, EU

WISE did not cover the whole sky, but only part of it - here's a coverage map:
http://wise.ssl.berkeley.edu/sky_coverage.html

What I don't know is where in relation to the coverage Planet Nine is thought to be hiding.

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Bob Smith
Member of Seti PIPPS (Pluto is a Planet Protest Society)
Somewhere in the (un)known Universe?

WISE did not cover the whole sky, but only part of it - here's a coverage map:
http://wise.ssl.berkeley.edu/sky_coverage.html

What I don't know is where in relation to the coverage Planet Nine is thought to be hiding.

well, you got it ALL covered in text, quote:
"The image above shows the overall coverage of the WISE all-sky survey, as measured by successfully processed frames. As of July 17, 2010 WISE had completed its first coverage of the entire sky, and on February 1, 2011 the survey came to an end."

also, I didn't say WISE mission...NEO-WISE is another mission:
http://neo.jpl.nasa.gov/programs/neowise.html
http://www.nasa.gov/mission_pages/neowise/main/index.html
http://neowise.ipac.caltech.edu/ - so they use it on CalTech...

quote:
"Current Status
As of mid-January 2016, NEOWISE is approximately 22% of the way into its fifth coverage of the entire sky. Over 392,000 infrared detections have been made of 18,030 different solar system objects, including 462 NEOs and 85 comets."

check what is has found:
http://www.nasa.gov/jpl/neowise/happy-new-year-neowise-a-yearlong-look-at-the-sky
;)

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non-profit org. Play4Life in Zagreb, Croatia, EU

Small one.

A small asteroid that two years ago flew past Earth at a comfortable distance of about 1.3 million miles (2 million kilometers) will safely fly by our planet again in a few weeks, though this time it may be much closer.

During the upcoming March 5 flyby, asteroid 2013 TX68 could fly past Earth as far out as 9 million miles (14 million kilometers) or as close as 11,000 miles (17,000 kilometers). The variation in possible closest approach distances is due to the wide range of possible trajectories for this object, since it was tracked for only a short time after discovery.

http://www.nasa.gov/feature/jpl/small-asteroid-to-pass-close-to-earth-march-5

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Missed us.

Large space rock burns up over Atlantic

The biggest fireball since the Chelyabinsk explosion has plunged through the atmosphere over the Atlantic Ocean.

The event, which has only just come to light, occurred off the coast of Brazil at 13:55 GMT on 6 February.

As it burned up, the space rock released the equivalent of 13,000 tonnes of TNT.
This makes it the most powerful event of its kind since an object exploded over Chelyabinsk in Russia in 2013.

http://www.bbc.com/news/science-environment-35645854

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Small one.

A small asteroid that two years ago flew past Earth at a comfortable distance of about 1.3 million miles (2 million kilometers) will safely fly by our planet again in a few weeks, though this time it may be much closer.

During the upcoming March 5 flyby, asteroid 2013 TX68 could fly past Earth as far out as 9 million miles (14 million kilometers) or as close as 11,000 miles (17,000 kilometers). The variation in possible closest approach distances is due to the wide range of possible trajectories for this object, since it was tracked for only a short time after discovery.

http://www.nasa.gov/feature/jpl/small-asteroid-to-pass-close-to-earth-march-5

there's been an update:
http://www.jpl.nasa.gov/news/news.php?feature=4888

next time, check here:
http://neo.jpl.nasa.gov/
;)

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non-profit org. Play4Life in Zagreb, Croatia, EU

72 were new discoveries.

Asteroid-hunting spacecraft delivers a second year of data

NASA's Near-Earth Object Wide-field Survey Explorer (NEOWISE) mission has released its second year of survey data. The spacecraft has now characterized a total of 439 NEOs since the mission was re-started in December 2013. Of these, 72 were new discoveries.

Near-Earth Objects (NEOs) are comets and asteroids that have been nudged by the gravitational attraction of the giant planets in our solar system into orbits that allow them to enter Earth's neighborhood. Eight of the objects discovered in the past year have been classified as potentially hazardous asteroids (PHAs), based on their size and how closely their orbits approach Earth.

http://phys.org/news/2016-04-asteroid-hunting-spacecraft-year.html

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Maybe another mission should be designed to use cryogenic & to search NEOs that way...a NEOWISE-2, that would be better built, upgraded version of NEOWISE & with cryogenic cooling that would keep it cold & with that more perceivable in coldness of space!
;)

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non-profit org. Play4Life in Zagreb, Croatia, EU

In the news. Don't want to start another thread.

Astronomers find a tailless comet, first of its kind

Astronomers have found a first-of-its-kind tailless comet whose composition may offer clues into long-standing questions about the solar system's formation and evolution, according to research published on Friday in the journal Science Advances.

The so-called "Manx" comet, named after a breed of cats without tails, was made of rocky materials that are normally found near Earth. Most comets are made of ice and other frozen compounds and were formed in solar system's frigid far reaches.

http://www.reuters.com/article/us-space-comet-idUSKCN0XQ2HZ

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That's a 1 big rock! ;)

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non-profit org. Play4Life in Zagreb, Croatia, EU