What is Black Hole Evaporation or the Hawking Radiation Hawking claimed that considering the quantum phenomena, black holes are not totally black: they should glow slightly with radiation that consists of photons, neutrinos, and to a lesser extent all sorts of massive particles. This idea of Hawking solved the unsolved mystery of black hole i.e. entropy problem of the black hole.
How Hawking Radiation appears; What really happens inside Black Hole? The idea Stephen Hawking used was when a black hole absorbs new materials using its immense gravitational pull then the entropy of those falling materials must go on adding the overall entropy of black hole.
Solar Wind Problem Finally Solved It is crucial to understand the characteristics of the solar wind and recently this will be probed at distances unprecedentedly close to the Sun by the new Parker Solar Probe mission, named after living Eugene Newman Parker and was launched on August 12, 2018.
More Advanced Detection Technique of Gravitational Waves - LIGO Equipped with Quantum-Enhanced System but Why and How? Overall, the new quantum squeezers have enhanced the expected detection rate by 40% at LIGO Hanford and by 50% at LIGO Livingston. On Sept. 14 of 2015, the Laser Interferometer Gravitational-wave Observatory (LIGO) recorded the first-ever Gravitational Wave.
How Advanced LIGO Works and What we can Learn from Gravitational Waves? A gravitational wave propagating orthogonally to the detector plane and linearly polarized parallel to the 4-km optical cavities will produce the effect of lengthening one 4-km arm and shortening the other during one half-cycle of the wave; these length changes are reversed during the other half-cycle.
First image of a Black Hole (Part-Four); What Scientists Got? The main aim of this project was to image an event horizon for the first time and to help determine if Einstein’s theory of general relativity needs any revision. The EHT team successfully imaged the black hole with distinctive and clear event horizon and also claimed their study further confirmes that the general theory of relativity is right at its place, till now.
First Image of a Black Hole (Part-Three); So Much Data and High-Tech Calibration Though they were capable of increasing the capacity and the telescope can collect data over the cosmological distances, there also remained more challenges. During the course, each observation generated about 1 petabyte of data which is much heavy to transfer using digital techniques. So, the scientist has to collect the collected data manually by using high-tech hard-drive to a common data center and then process them as the determined standards.
First Image of Black Hole (Part-Two); How Scientists saw the Unseen Black Hole? To see the unseeable region from light also can't escape in the far space scientist need to have a more powerful telescope. Scientists and engineers at the Event Horizon Telescope (EHT) basically designed and connect the powerful telescopes around the world so that the capacity will be much greater than they had and develop a systematic calibration strategy.
First Image of a Black Hole (Part-One) April 10, 2019, news, 'Astronomers Capture the First Image of a Black Hole' was released by researchers at Event Horizon Telescope and its collaboration. They stated, with the international collaboration and a planet-size array of eight ground-based radio telescopes, they were finally able to unveil the first direct visual evidence of a supermassive black hole and its shadow.
Astronomers Defined a More Accurate Edge-to-Edge Measurement of the Milky Way Galaxy New work by astronomers found that the Milky Way stretches nearly 2 million light-years across, more than 15 times wider than its luminous spiral disk or the brightest part of Milky Way galaxy.
