Evolution of The Universe

Wormhole This blog explains the concept and working of Wormholes. A wormhole is a solution of the Einstein field equations having a non-trivial structure linking separate points in spacetime, much like a tunnel with two ends, each at separate points in spacetime. Such connections are consistent with the general theory of relativity, yet their existence remains hypothetical. A wormhole may connect extremely long distances such as a billion light years or more; short distances such as a few meters; different universes; and/or different points in time. This is proposed in Albert Einstein's special theory of relativity, where the combination of space and time into a single spacetime continuum could theoretically allow one to traverse both space and time using a wormhole with the correct conditions. Schwarzschild wormholes Schwarzschild wormholes, also known as Einstein–Rosen bridges (named after Albert Einstein and Nathan Rosen ), are connections between areas of ...

Warp Drive This blog explains Ward Drive in Hindi and answers questions like, What is Warp Drive, How it works? What are the limitations of Warp Drives etc. Warp drive is a faster-than-light (FTL) spacecraft propulsion system in many science fiction works, most notably Star Trek. A spacecraft equipped with a warp drive may travel at speeds greater than that of light by many orders of magnitude. In contrast to other FTL technologies such as a jump drive or hyper drive, the warp drive does not permit instantaneous travel between two points but involves a measurable passage of time which is pertinent to the concept. Spacecraft at warp velocity theoretically continue to interact with objects in "normal space". The general concept of "warp drive" was introduced by John W. Campbell in his 1931 novel Islands of Space. Einstein's theory of special relativity states that energy and mass are interchangeable, thus, speed of light travel is impossible for mate...

James Webb Space Telescope The James Webb Space Telescope (JWST), previously known as Next Generation Space Telescope (NGST), is a part of NASA's ongoing Flagship Program which has developed in cooperation with the European Space Agency and Canadian Space Agency. The space telescope is under construction and scheduled to launch in October 2018. JWST will offer unprecedented resolution and sensitivity from long-wavelength (orange-red) visible light, through near-infrared to the mid-infrared (0.6 to 27 micrometers). While the Hubble Space Telescope has a 2.4-meter (7.9 ft) mirror, the JWST features a larger and segmented 6.5-meter-diameter (21 ft 4 in) primary mirror and will be located near the Earth–Sun L2 point. A large sunshield will keep its mirror and four science instruments below 50 K (−220 °C; −370 °F). JWST's capabilities will enable a broad range of investigations across the fields of astronomy and cosmology.[5] One particular goal involves observing some o...

Where is the Centre of Universe Where is the Centre of Universe? What Lies in the centre of the Universe? Case 1: The Observable Universe We are, by definition, at the very center of our observable universe. However, an alien species on a planet one billion light years away from us is at the center of their observable universe, which is very different from ours. Wherever you go, you will be at the center of your observable universe, because the observable universe is the part of the universe that you can see, and the light from all the stars and galaxies on the edge of the observable universe takes the same time to get to you, no matter which direction it came from. So you can imagine the observable universe as a sphere (or ball) that is centered on you and follows you wherever you go. However, there is nothing special about you specifically; anyone else in the universe experiences the same thing. Case 2: The Entire Universe It should be stressed that in contrast to the obs...

Did The Big Bang Really Happen If you are asking questions like, Was Big Bang Real? Is Big bang just a story? What proofs do we have about the Big Bang? etc, then this is the video you are looking for. This blog explains it. The Big Bang Theory is the leading explanation about how the universe began. At its simplest, it says the universe as we know it started with a small singularity, then inflated over the next 13.8 billion years to the cosmos that we know today. Because current instruments don't allow astronomers to peer back at the universe's birth, much of what we understand about the Big Bang Theory comes from mathematical formulas and models. Astronomers can, however, see the "echo" of the expansion through a phenomenon known as the cosmic microwave background. While the majority of the astronomical community accepts the theory, there are some theorists who have alternative explanations besides the Big Bang — such as eternal inflation or an oscill...

Gravitational Waves & LIGO This blog explains Gravitational Waves in Hindi language. It also explains LIGO in Hindi as well as How LIGO observatory Works. What are gravitational waves? Put simply, gravitational waves are ripples in the otherwise tough, stiff fabric of spacetime produced by the most violent phenomena the cosmos can offer—things like exploding stars and collisions between ultradense neutron stars or merging black holes. Gravitational waves are washing over Earth all the time, but our instruments have not been sensitive enough to detect them until very recently. Who first came up with the idea of gravitational waves? In 1916, Albert Einstein suggested that gravitational waves could be a natural outcome of his general theory of relativity, which says that very massive objects distort the fabric of time and space—an effect we perceive as gravity. Accordingly, very massive objects spiraling toward each other should wrinkle space-time and send those distorti...

 Oumuamua  - Solar System's First Interstellar Visitor ʻOumuamua is the first known interstellar object to pass through the Solar System. Formally designated 1I/2017 U1, it was discovered by Robert Weryk using the Pan-STARRS telescope at Haleakala Observatory, Hawaii, on 19 October 2017, 40 days after it passed its closest point to the Sun. When first seen, it was about 33,000,000 km (21,000,000 mi; 0.22 AU) from Earth (about 85 times as far away as the Moon), and already heading away from the Sun. Initially assumed to be a comet, it was reclassified as an asteroid a week later, and finally (6 November 2017) as the first of the new class of interstellar object. ʻOumuamua is a small object, estimated to be about 230 by 35 meters (800 ft × 100 ft) in size. It has a dark red color, similar to objects in the outer Solar System. ʻOumuamua showed no signs of a comet tail despite its close approach to the Sun, and has significant elongation and rotation rate, so it is t...

Barycenter Concept Through this blog, We have tried to explain the concept of Barycenter in Simple Language. We know that Planets orbit the sun but that's not the reality. They actually revolve around the barycenter of the solar system. This concept of Barycenter in Hindi is easy to understand and grasp. The barycenter (or barycentre; from the Ancient Greek βαρύς heavy + κέντρον centre) is the center of mass of two or more bodies that are orbiting each other, which is the point around which they both orbit. It is an important concept in fields such as astronomy and astrophysics. The distance from a body's center of mass to the barycenter can be calculated as a simple two-body problem. In cases where one of the two objects is considerably more massive than the other (and relatively close), the barycenter will typically be located within the more massive object. Rather than appearing to orbit a common center of mass with the smaller body, the larger will simply ...

Mysteries of Black Holes This blog explains Black Holes in Simple Language. It also tries to explain What's Inside a black hole in Hindi. We will be discussing The Hawkins Radiation in Hindi in our next episodes. Apart from these, We have also explained Quasar in Hindi along with some unknown facts related to black holes. A black hole is a place in space where gravity pulls so much that even light can not get out. The gravity is so strong because matter has been squeezed into a tiny space. This can happen when a star is dying. Because no light can get out, people can't see black holes. They are invisible. Space telescopes with special tools can help find black holes. The special tools can see how stars that are very close to black holes act differently than other stars. How Big Are Black Holes? Black holes can be big or small. Scientists think the smallest black holes are as small as just one atom. These black holes are very tiny but have the mass of a large mount...

   Hawking radiation, also known as Hawking–Zel'dovich radiation,is blackbody radiation that is predicted to be released by black holes, due to quantum effects near the event horizon. It is named after the physicist Stephen Hawking, who provided a theoretical argument for its existence in 1974, and sometimes also after Jacob Bekenstein, who predicted that black holes should have a finite entropy. Hawking's work followed his visit to Moscow in 1973 where the Soviet scientists Yakov Zeldovich and Alexei Starobinsky showed him that, according to the quantum mechanical uncertainty principle, rotating black holes should create and emit particles.Hawking radiation reduces the mass and energy of black holes and is therefore also known as black hole evaporation. Because of this, black holes that do not gain mass through other means are expected to shrink and ultimately vanish. Micro black holes are predicted to be larger emitters of radiation than larger black holes a...