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science > physics > timeline > 21st century > Gravitational waves    2016

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

LIGO Hears a Ripple in Space-Time

By DENNIS OVERBYE, JONATHAN CORUM and JASON DRAKEFORD

NYT        Feb. 11, 2016 | 4:36

 

About a hundred years ago,

Einstein predicted the existence of gravitational waves,

but until now, they were undetectable.

http://www.nytimes.com/video/science/100000004200661/
what-are-gravitational-waves-ligo-black-holes.html

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 October 16, 2017

 

For the first time,

scientists have caught

two neutron stars

in the act of colliding,

revealing that these strange smashups

are the source of heavy elements

such as gold and platinum.

 

The discovery (...)

solves a long-standing mystery

about the origin

of these heavy elements

which are found in everything

from wedding rings to cellphones

to nuclear weapons.

 

It's also a dramatic demonstration

of how astrophysics

is being transformed

by humanity's newfound ability

to detect gravitational waves,

ripples in the fabric of space-time

that are created when massive objects

spin around each other and finally collide.

http://www.npr.org/sections/thetwo-way/2017/10/16/
557557544/astronomers-strike-gravitational-gold-in-colliding-neutron-stars

 

 

http://www.npr.org/sections/thetwo-way/2017/10/16/
557557544/astronomers-strike-gravitational-gold-in-colliding-neutron-stars

 

 

 

 

 

 

 

 

 

 

 

 

 

 

11 February 2016

 

Gravitational waves:

discovery hailed as breakthrough of the century

 

Scientists announce discovery

of clear gravitational wave signal,

ripples in spacetime

first predicted by Albert Einstein

https://www.theguardian.com/science/2016/feb/11/
gravitational-waves-discovery-hailed-as-breakthrough-of-the-century

 

 

 

 

(...) Albert Einstein

used his newly discovered

general theory of relativity

(which implies that space itself

responds to the presence of matter

by curving, expanding or contracting)

to demonstrate that each time

we wave our hands around

or move any matter,

disturbances in the fabric of space

propagate out at the speed of light,

as waves travel outward

when a rock is thrown

into a lake.

 

As these gravitational waves

traverse space

they will literally cause

distances between objects

alternately to decrease and increase

in an oscillatory manner.

http://www.nytimes.com/2016/02/14/opinion/sunday/finding-beauty-in-the-darkness.html

 

 

http://www.npr.org/sections/thetwo-way/2017/10/16/
557557544/astronomers-strike-gravitational-gold-in-colliding-neutron-stars

https://www.theguardian.com/science/2017/oct/03/
a-new-way-to-study-our-universe-what-gravitational-waves-mean-for-future-science-nobel-physics

http://www.npr.org/sections/thetwo-way/2017/10/03/
555279770/2017-physics-nobel-prize-honors-work-on-gravitational-waves-3-americans-win

http://www.npr.org/sections/13.7/2017/10/03/
555320681/nobel-winners-work-in-physics-began-with-albert-einstein

 

http://www.npr.org/2016/08/17/
487923755/how-to-catch-the-biggest-wave-in-the-universe

http://www.npr.org/sections/thetwo-way/2016/06/15/
481934630/gravitational-waves-from-colliding-black-holes-shake-scientists-detectors-again

http://www.npr.org/sections/thetwo-way/2016/02/12/
466559439/einstein-a-hunch-and-decades-of-work-
how-scientists-found-gravitational-waves

http://www.nytimes.com/2016/02/12/
science/ligo-gravitational-waves-black-holes-einstein.html

http://www.npr.org/sections/thetwo-way/2016/02/11/
466286219/in-milestone-scientists-detect-waves-in-space-time-as-black-holes-collide

http://www.npr.org/sections/13.7/2016/02/11/
466372736/growing-old-with-einstein-the-long-wait-for-detection-of-gravitational-waves

http://www.bbc.co.uk/programmes/p03j72qb - 11 February 2016

https://www.theguardian.com/science/2016/feb/11/
gravitational-waves-science-thrilled-by-discovery-ripples-in-space-time

https://www.theguardian.com/science/2016/feb/11/
gravitational-waves-discovery-hailed-as-breakthrough-of-the-century

https://www.theguardian.com/science/2016/feb/09/
gravitational-waves-everything-you-need-to-know

https://www.theguardian.com/science/video/2016/feb/11/
gravitational-waves-discovery-changes-everything-video

 

http://www.theguardian.com/commentisfree/2015/dec/07/
einstein-universe-gravitational-waves-theory-relativity

http://www.nytimes.com/interactive/2015/11/24/
science/what-is-einsteins-general-relativity.html

 

 

 

 

 

 

 

 

 

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