Visit the Cellar!

The Cellar Image of the Day is just a section of a larger web community: bright folks talking about everything. The Cellar is the original coffeeshop with no coffee and no shop. Founded in 1990, The Cellar is one of the oldest communities on the net. Join us at the table if you like!

 
What's IotD?

The interesting, amazing, or mind-boggling images of our days.

IotD Stuff

ARCHIVES - over 13 years of IotD!
About IotD
RSS2
XML

Permalink Latest Image

October 22, 2020: A knot of knots is up at our new address

Recent Images

September 28th, 2020: Flyboarding
August 31st, 2020: Arriving Home / Happy Monkey Bait
August 27th, 2020: Dragon Eye Pond
August 25th, 2020: Sharkbait
July 29th, 2020: Gateway to The Underworld
July 27th, 2020: Perseverance
July 23rd, 2020: Closer to the Sun

The CELLAR Tip Mug
Some folks who have noticed IotD

Neatorama
Worth1000
Mental Floss
Boing Boing
Switched
W3streams
GruntDoc's Blog
No Quarters
Making Light
darrenbarefoot.com
GromBlog
b3ta
Church of the Whale Penis
UniqueDaily.com
Sailor Coruscant
Projectionist

Link to us and we will try to find you after many months!

Common image haunts

Astro Pic of the Day
Earth Sci Pic of the Day
We Make Money Not Art
Spluch
ochevidec.net
Strange New Products
Geisha Asobi Blog
Cute animals blog (in Russian)
20minutos.es
Yahoo Most Emailed

Please avoid copyrighted images (or get permission) when posting!

Advertising

The best real estate agents in Montgomery County

   xoxoxoBruce  Saturday Nov 18 01:08 AM

Nov 18th, 2017 : Wrinkle in Space-Time

…and that was Pink Floyd with Dark Side of the Moon. It’s 8:41 a.m. EDT Aug. 17th, 2017, now for the traffic report.
Uh Oh, There’s been a big collision, I hope they get it cleared up by rush hour.
Two Neutron stars collided only 130 million years ago.



Quote:
For the first time, scientists have directly detected gravitational waves — ripples in space-time — in addition to light from the spectacular collision of two neutron stars. This marks the first time that a cosmic event has been viewed in both gravitational waves and light.
The discovery was made using the U.S.-based Laser Interferometer Gravitational-Wave Observatory (LIGO); the Europe-based Virgo detector; and some 70 ground- and space-based observatories.
Neutron stars are the smallest, densest stars known to exist and are formed when massive stars explode in supernovas. As these neutron stars spiraled together, they emitted gravitational waves that were detectable for about 100 seconds; when they collided, a flash of light in the form of gamma rays was emitted and seen on Earth about two seconds after the gravitational waves. In the days and weeks following the smashup, other forms of light, or electromagnetic radiation — including X-ray, ultraviolet, optical, infrared, and radio waves — were detected.
Why hasn’t NASA come up with an intergalactic Roomba yet?

Quote:
"That debris is strange stuff. It's gold and platinum, but it's mixed in with what you'd call just regular radioactive waste, and there's this big radioactive waste cloud that just starts mushrooming out from the merger site," Kasen says. "It starts out small, about the size of a small city, but it's moving so fast — a few tenths of the speed of light — that after a day it's a cloud the size of the solar system."
According to his estimates, this neutron star collision produced around 200 Earth masses of pure gold, and maybe 500 Earth masses of platinum. "It's a ridiculously huge amount on human scales," Kasen says. He personally has a platinum wedding ring and notes that "it's crazy to think that these things that seem very far out and kind of exotic actually impact the world and us in kind of intimate ways."
* This is an illustration because there wasn't any cameras 130 million yeas ago.

...... that we know of.

link

link


sexobon  Saturday Nov 18 07:40 AM

Surf's up, alchemists!



lumberjim  Saturday Nov 18 01:39 PM

So, they're saying that gravity is faster than light, and can prove it?



sexobon  Saturday Nov 18 02:21 PM

From the first link:

Quote:
... At the moment of collision, the bulk of the two neutron stars merged into one ultradense object, emitting a “fireball” of gamma rays. The initial gamma-ray measurements, combined with the gravitational-wave detection, also provide confirmation for Einstein’s general theory of relativity, which predicts that gravitational waves should travel at the speed of light. ...



Happy Monkey  Saturday Nov 18 04:14 PM

I think the gravitational effect begins before the stars actually meet.



xoxoxoBruce  Saturday Nov 18 09:27 PM

That's how I read it, then the impact caused the light (gamma burst).



Glinda  Saturday Nov 18 09:37 PM

Eddies in the space-time continuum.


















Sorry. I tried not to. Really, I did.

I am weak.



lumberjim  Saturday Nov 18 11:28 PM

'; when they collided, a flash of light in the form of gamma rays was emitted and seen on Earth about two seconds after the gravitational waves.'

That's what I was referring to. Seemed important.



lumberjim  Saturday Nov 18 11:32 PM

Quote:
Originally Posted by xoxoxoBruce View Post
…and that was Pink Floyd with Dark Side of the Moon. It’s 8:41 a.m. EDT Aug. 17th, 2017, now for the traffic report.
Uh Oh, There’s been a big collision, I hope they get it cleared up by rush hour.
Two Neutron stars collided only 130 million years ago.





Why hasn’t NASA come up with an intergalactic Roomba yet?



* This is an illustration because there wasn't any cameras 130 million yeas ago.

...... that we know of.

link

link
Quote:
Originally Posted by Glinda View Post
Eddies in the space-time continuum.


















Sorry. I tried not to. Really, I did.

I am weak.
I've just realized that I've never read that book. It's like the movie The Godfather.i know all the references, some how.... But never seen the actual movie.

I'll rectify that at once.


xoxoxoBruce  Sunday Nov 19 01:45 AM

Quote:
Originally Posted by lumberjim View Post
'; when they collided, a flash of light in the form of gamma rays was emitted and seen on Earth about two seconds after the gravitational waves.'

That's what I was referring to. Seemed important.
The gravitational waves were generated before the collision, they had a head start. Over 130 million years the Gamma rays caught up but the gravitational waves won by a nose.


Glinda  Sunday Nov 19 01:21 PM

Quote:
Originally Posted by lumberjim View Post
I've just realized that I've never read that book. It's like the movie The Godfather.i know all the references, some how.... But never seen the actual movie.

I'll rectify that at once.
You definitely should read the books. Clever, silly, and quite entertaining. (IMO, the movie didn't do them justice.)






lumberjim  Tuesday Nov 21 11:28 PM

What a Terrible book



Your reply here?

The Cellar Image of the Day is just a section of a larger web community: a bunch of interesting folks talking about everything. Add your two cents to IotD by joining the Cellar.