[sparky@home]

Our modern world is built on Newton, and here are scientists now disproving Newton’s theory of gravity based on ground breaking research in black hole, while even Albert Einstein’s theories hang by a thread.Quote “ Einstein's right, at least for now. We can absolutely rule out Newton's law of gravity….Professor Andrea Ghez” (American astronomer and professor in the Department of Physics and Astronomy at UCLA)

Link: https://www.express.co.uk/news/scien...ein-black-hole

Mods : I am not sure where to post this, kindly delete or change as required.

[AltoLXI]

Chandrayaan 2 Vikram lander separation successful at 1:45 pm today

Waiting for the September 7 landing.

[Miyata]

The information gathered by NASA's Parker Solar Probe during its first two close passes of the sun is now available (to public as well).

From this website -

The spacecraft primarily gathers data while within about 23 million miles (37 million kilometers) of our star.

Onboard are four science experiments:

1> Fields Experiment, which studies electric and magnetic fields;

2> Integrated Science Investigation of the Sun, which measures high-energy charged particles in the solar wind and corona;

3> Wide-Field Imager for Solar Probe, which images the solar wind and other structures; and

4> Solar Wind Electrons Alphas and Protons Investigation, which measures different types of particles in the solar wind.

The data itself is made publicly available as listed on NASA blog, which further states -

Parker Solar Probe will continue to get closer to the Sun in the coming years, eventually swooping to within 4 million miles of the Sun’s surface, facing heat and radiation like no spacecraft before it.

Initial results and analysis are to be published.

[alpha1]

Originally Posted by sparky@home

Our modern world is built on Newton, and here are scientists now disproving Newton’s theory of gravity based on ground breaking research in black hole, while even Albert Einstein’s theories hang by a thread.Quote “ Einstein's right, at least for now. We can absolutely rule out Newton's law of gravity….Professor Andrea Ghez” (American astronomer and professor in the Department of Physics and Astronomy at UCLA)
.

He is right and there is nothing new about this.
Newton's theory can be said to be simplification of Einstein's theory, which deals with objects interacting at large distances.

Quantum mechanics deals with objects interacting at small distance.

There is no unification yet of both these theories.

“It cannot fully explain gravity inside a black hole, and at some point we will need to move beyond Einstein’s theory to a more comprehensive theory of gravity that explains what a black hole is.”

As I said, till we have a working model of what exactly causes gravitation, we cannot have a unification of Quantum mechanics and Relativity.

[comfortablynumb]

Today's solar eclipse being live streamed here:

From Sri Lanka:

https://www.youtube.com/watch?v=4OwDo4SAjCg

From Abu Dhabi:

https://www.youtube.com/watch?v=4foL-OEnLpk

[alpha1]

Weather in India has been terrible this time (this year).
Usually clear skies in December are filled with clouds and haze.
:(

Couldn't get to see anything like a solar eclipse here.

[SilentEngine]

It was a cloudy sky in Bangalore and managed to get a glimpse here.

[sparky@home]

Watch 57,000 planned satellites swarm Earth within 9 years in a stunning new animation.

A new animation by aerospace data firm Analytical Graphics.

https://youtu.be/8sYtPe9ycWQ

[doxinboy]

Man, is SpaceX public listed company, I'm off to buy some stock by selling my kidney. I'm sure in 10 years I'll be having a truck load of them in one of the many transplanting hospital that I would own.

[AZT]

Chile astronomers discover star dancing according to Einstein´s century-old theory

Einstein’s General Theory of Relativity, published in 1915, is a foundation of modern physics. It has long helped scientists understand the forces of gravity.
But Thursday’s announcement from the European Southern Observatory (ESO), an intergovernmental group of European astronomers that operates in Chile, proves the theory applies even to a star some 26,000 light years from the Sun

Nearly 30 years of measurements, ESO scientists said in a statement, allowed them to follow the star as it traced a rosette-shaped orbit around the “supermassive” black hole in the Milky Way. Their discovery proved Einstein, and not his predecessor Isaac Newton, was right. Newton believed it would travel in an ellipse-like pattern

Read More: https://in.reuters.com/article/chile...-idINKBN21Z0G5

[neofromcapone]

Guys,
A stunning cosmic light show, the Lyrid meteor shower, is set to peak this week and the good thing is that you can witness this epic light show.

According to NASA, the meteor shower usually appears between April 16 and April 25 and this year, the peak of the Lyrids will streak the sky with light from Monday (April 21), beginning around 10 p.m. local time, until about 5 a.m. Wednesday (April 22).

European Southern Observatory (ESO) said that around 20 meteor streaks per hour may be visible during this window if the weather remains clear.

The good news is that the Lyrids can be seen without a telescope and they are clearly visible in dark skies, away from light pollution. "Lie flat on your back with your feet facing east and look up, taking in as much of the sky as possible," NASA says. "After about 30 minutes in the dark, your eyes will adapt and you will begin to see meteors."

Link

[sparky@home]

A spectacular view of Saturn...

[sparky@home]

Seth Shostak essay on the Universe expansion is a nice read and informative as well.

https://m.seattlepi.com/science/arti...photo-19333394

[caffeineAM]

I put a camera out on my window in April trying to catch the Lyrid meteor shower.

https://youtu.be/cfF__ufQjpM

Managed to get just one before sunrise

[sparky@home]

Comet SWAN, is a comet that was discovered in images taken by the SWAN camera on March 25, 2020, aboard the Solar Heliospheric Observer spacecraft. What a tail it has developed in recent days.

For more info https://theskylive.com/c2020f8-info