“Firefly Sparkle” Reveals Early Galaxy - YouTube - NASA Goddard - cosmology

Dr.Johnathan Gardner,Former Deputy Senior Project Scientist for JWST,presents the latest JWST images of the "Firefly Sparkle" galaxy,showcasing intricate details and structures.There is so much going on in this seemingly tiny galaxy,it appears like a swarm of fireflies on a warm summer night.This galaxy is gleaming with star clusters.This is the first time the NASA/ESA/CSA James Webb Space Telescope has detected a galaxy that existed around 600 million years after the Big Bang.This was made possible by a phenomenon known as gravitational lensing that was predicted by Einstein's Theory of General Relativity,in which the gravity of a large celestial object is strong enough to warp spacetime,allowing us to peer at a very distant celestial object.*Credit:NASA Goddard Spaceflight Center in Greenbelt,Maryland.*Cosmology is the study of the origin,evolution and structures of the universe.*Text by NASA Goddard and edited and augmented by Andrew Taylor

The NEW Ultimate Energy Limit of the Universe - YouTube - PBS Space Time - astrophysics - new episode

The NASA/ESA/CSA James Webb Soace Telescope has discovered a new energy limit for the universe.It did so while studying supermassive black holes in the early universe,finding the new energy limit is 4,000 times greater than the old one,by studying the supermassive black hole LIG-568.The supermassive black hole's accretion disk (Active Galactic Nucleus) set the new record with its brightness.Sir Arthur Eddington is considered the father of astrophysics.He was the first scientist to verify Einstein's Theory of General Relativity by observing the bending of light caused by the Sun's gravity during a solar eclipse,which General Relativity predicted.He went on to develop the Eddington Limit.This holds that the maximum luminosity a body such as a star can achieve is balanced by the star's gravity going in.The state of balance is called hydrostatic equilibrium.There is a balance of the gas pressure pushing out and the gravity pulling in.In addition,photons,which Einstein described as packets of light,bounce off of electrons,a phenomenon called Thompson's scattering.In the most massive stars,this outward pressure starts to dominate.*This episode was presented and written by the Australian astrophysicist Dr.Matt O'Dowd.

The Boundary Between Black Holes & Neutron Stars - YouTube - PBS Space Time - astrophysics

Gravitational waves were predicted by Einstein's Theory of General Relativity.On 14 AUG 2024,a signal was received consistent with a gravitational wave traveling at the speed of light at the Hanford LIGO in Washington State,the Livingston LIGO in Louisiana,and the Virgo LIGO in Italy.A neutron star is what's left over after a supernova.About 1.5 Suns of matter is compressed into an area the size of a small city,making the gravity 100 billion times stronger than the gravity of Earth's surface.The signal was consistent with a neutron star being in close proximity to a black hole.*Presented and written by Dr.Matt O'Dowd,an Australian astrophysicist.

Gravitational waves create a 'cosmic symphony' that scientists are tuning into - National Science Foundation

Based on his Theory of General Relativity,in 1915 Albert Einstein predicted the existence of gravitational waves,which are ripples in spacetime caused by massive cosmic events.Their existence wasn't verified until 2016 by the Laser Interferometer Gravitational-Wave Observatory (LIGO).Additionally,a network of two radio telescopes at Arecibo,Puerto Rico and Green Bank,West Virginia monitoring pulsars,which are highly magnetized,rapidly rotating neutron stars,were successfully enlisted in the search for gravitational waves.It is the North American Nanohertz Observatory for Gravitational Waves (NANOGrav) sponsored by the National Science Foundation,and reported the first results of the project in 2023,the detection of background gravitational waves based on more than 15 years of radio telescope data.

Supernova explosion 4 billion light-years away revealed using gravitational lensing - astrophysics

Gravity from massive objects such as a galaxy causes light from the original light source to bend,an effect predicted by Einstein's Theory of General Relativity.This results in a magnifying effect,revealing objects we cannot see even with a powerful telescope.In this case,the image of the original light source was in a form called Einstein's cross.

Before He Died, Einstein Wrote THIS on his Blackboard

Einstein's theory proven right again in orbital General Relativity test