Astrophysics

By Akshay kumar das

The night sky full of stars will make feel more curious about this universe.

“Let us know more about stellar evolution, we all will be surely amazed by this extraordinary process of star birth to death. Why do nations invest so much money for research in Astrophysics? Have you ever thought, consider NASA, they invest billions on to the Space and Astrophysics, You know the science of stellar evolution and its study has greater significance in knowing the fundamental evolution of this universe, which in turn helps us to know the origin of life, earth and for the matter.. Us and fate of universe.

How amazing, beautiful to eyes to look at the Dark night sky filled with countless stars. Can’t believe our sun is a star. The nearest star.

The facts you learned during school-days will surely be updated now, but the curiosity of stars are still the same for me. I still look into the night sky as a mysterious scene.”

Astrophysics

Most frequent questions and answers

In fact, space is said to begin just 100 km above the surface of the earth so if you were in a rocket then you would not need to travel for too long to hit space. When you look in the sky to the moon for instance you actually only need to travel a tiny, tiny fraction of the way to the moon to enter space.

Theories abound. The most widely accepted thought at present is that some massive impact on earth in its very formative days was so violent that it sent a chunk of earth rock flying out into space, and this became the moon. Certainly if true, this was very fortuitous for life on earth in the end, as the moon has many effects on the earth that are beneficial for life, e.g. tides.

One interesting theory is that most of the water came to earth from comets. The idea is that loads of small comets, about the size of small houses, come into the atmosphere every day.

They vaporize in the atmosphere, leaving their water behind.

The idea is that 10 of these very minute for billions of years over the course of the history of the planet would lead to virtually all the water in the oceans and atmosphere!

This would be significant, as it would give an alternative explanation for the standard idea that the water came from gaseous emissions from the crust of the Earth in the early days post its initial formation…

The age of the earth soon put paid to that and recently sophisticated scientific techniques have pointed at a much greater age.

Some have thought the question incoherent or at least that its presupposition should be stated clearly that is, that the universe has a beginning and therefore point where it came into existence.

However, there seems to be strong evidence that the universe has not always existed and therefore this is a coherent question.

We need to say that if the big bang is true, we can go back only to say something like ‘when was the big bang’ as direct access to existence of the universe before then may be something we can never empirically have depending on the definition of the big bang and what may have gone before.

Typical estimates of the age of the universe are around 14 18 billion years, based on globular clusters.

Under general relativity, it is seen that gravity can literally warp spacetime around it.

Therefore, anything that passes through the gravitational warping will itself be influenced.

Around a massive object like the sun, there is a slight warping of spacetime, and therefore everything that passes through that is affected.

This is what causes the slight bending, you notice in light waves even though they cannot have mass in the standard model (as it takes infinite energy to accelerate anything that has mass to light speed)

Here anyone can read !

Any Questions Let us know

Top Astrophysics blogs and websites

My personal favorites

NASA Astrophysics

The NASA the space giant research agency will surely not disappoint you, multimedia and videos, gallery will help to know more practical understanding of the Astrophysics. I have read the contents from the NASA, from the days of childhood, when i had no INTERNET connectivity, Newspaper writers like BS Shylaja, Adyanadka Krishna bhat, Nagesh hegde and many science writers had translated and made science columns. They not only made translations but also they gave native touch in layman terms. The references of NASA is widely used by researchers, students.

Big Questions

How does the universe work?

How did we get here?

Are we alone?, space research,

So i think the NASA stands, as best.

My Rating : ★ + ★

Website : https://science.nasa.gov/astrophysics/

AstroSat MISSION

AstroSat MISSION

AstroSat is the first dedicated Indian astronomy mission aimed at studying celestial sources in X-ray, optical and UV spectral bands simultaneously. The payloads cover the energy bands of Ultraviolet (Near and Far), limited optical and X-ray regime (0.3 keV to 100keV). One of the unique features of AstroSat mission is that it enables the simultaneous multi-wavelength observations of various astronomical objects with a single satellite.

My Rating : ★★★★★

Website : https://www.isro.gov.in/astrosat-0 and http://astrosat-ssc.iucaa.in/

Space For Everyone

Space For Everyone

This Above site is really great platform, the Newsletters subscriptions will enable one to receive the best articles and resources. One can subscribe defiantly.

My Rating : ★★★+1/2

Website : http://www.planetary.org/

CERN (European Organization for Nuclear Research)

Scientists from around the world
come to CERN…
Curiosity is as old as humankind, When the Laboratory was founded, the structure of matter was a mystery. Today, we know that all visible matter in the Universe is composed of a tiny number of particles, whose behavior is governed by four distinct forces. CERN has played a vital role in reaching this understanding.

My Rating : ★★★★

Website : https://home.cern

Look at the sky !!

A.P.J Abdul Kalam

Look at the sky. We are not alone. The whole universe is friendly to us and conspires only to give the best to those who dream and work

A. P. J. Abdul Kalam

Astrophysics gallery

Nebula

NGC6543

Cat’s Eye Nebula

J.P. Harrington and K.J. Borkowski (University of Maryland), and NASA [Public domain]

Barnard 33

Horsehead Nebula

Ken Crawford [CC BY-SA 3.0 (https://creativecommons.org/licenses/by-sa/3.0)]

Astrophysics gallery

Star

Milky Way IR Spitzer

The infrared image from NASA’s Spitzer Space Telescope shows hundreds of thousands of stars in the Milky Way galaxy

Credit: NASA/JPL-Caltech/S. Stolovy (SSC/Caltech) [Public domain]

W40 star-forming region

A cluster of approximately 500 young stars lies within the nearby W40 stellar nursery.

NASA/Spitzer [Public domain]