Skip to main content

Posts

Know about world's largest space telescope: JWST

James webb Space Telescope: JWST is going to give us our first detailed glimpse of our early universe from which we and everything we know was born. It is a 10-billion-dollar endeavour. It is the successor of Hubble Space Telescope and optimised for Infrared wavelengths.   Hubble was the first telescope that was established in space and does Optical and near Infrared imaging. It has done some game changing discoveries in 25 years of life span like find finding exoplanet, super massive black hole, saw collision & merging and growth of galaxies. In spite of all these achievements Hubble has one flaw that it can’t observe some place of universe, we need more powerful telescope than Hubble. So JWST comes in picture.   JWST is a joint venture of NASA, ESA (European Space Agency), CSA (Canadian Space Agency). JWST was expected to be launched on 2007 but after 16 launch delays it finally launched by Ariane 5 (European heavy lift launch vehicle) from the European spaceport in Kour...
Recent posts

First Giant planet found orbiting a dead white dwarf star

U sually when star like sun die means run out of fuel, will pull nearby asteroids and planets inward and crushed them and will create a disk of debris that surrounds the planet. But this is first planet that made the whole journey intact. NASA researchers announced last week that they have discovered a planet orbiting a white dwarf star and that is confirmed by NASA's satellite TESS ( Transiting Exoplanet Survey Satellite ) and Spitzer Space Telescope . Planet named WD 1856 b orbiting a small white dwarf star ( WD 1856 ) which is 80 light years away from Earth in Draco Constellation. The planet WD 1856 b, is a gas giant roughly the size of Jupiter and carry 14 time more mass from Jupiter. Star containing sun's half mass and size slightly larger than earth. According to NASA, it circles the star very closely and makes a complete orbit about every 34 hours. Vanderburg says in the NASA statement "WD 1856 b got very close to its white dwarf and managed to stay in one piece...

What is White Dwarf? How can we find them?

What is White Dwarf ? I n universe there are billion of star , every star lives because of nuclear fusion. Mostly fusion happens in core of star but sometimes that it also happened in place near core called shells.  If somewhere a star take birth so somewhere a star will be dead. Death of star depends on its mass. Star which have huge mass will be form as neutron star or black hole after death but which have less mass will be form as white ball who shines for trillion of years they are called  White Dwarf .  Death of Star: As star grow old fusion will happen in different areas of star and different materials formed in this process this is known as  Stellar Evolution  . But every star has its time , when it's gravitational force is not upto the level to continue nuclear fusion in star which causes to start of process of dying a star. Since there is no external force (as fusion stops) so star will shrink because of it's gravitational force but it shines as ma...

Tachyons:Explaination

What is Tachyons? We all know that nothing can be faster than light, maybe in future scientist will find anything which will be the faster than light and that will be the TACHYONS. Tachyons are the particles which existed only in the theory. And according to some physists getting these TACHYONS chances are very less. TACHYONS means "those particles which are faster than light", are the hypothetical subatomic particles which are always greater than the light. The idea of that particles which are faster than the light is given by 3 INDIAN SCIENTIST: 1- O.M.P. Bilanuik 2- V.K. Deshpande 3- E.C.G Sudarshan and name given for that particles is "META-PARTICLES". But later a foreign scientist came in picture with the name "Particles which are faster than light" , these particles are named as TACHYONS.  According to the Einstein theory of the special relativity speed of the light is the highest speed of the universe. And according to the so...

What Are Black Holes? : Introduction

W hat A re B lack H oles ? Black holes are some of the strangest and most fascinating objects found in outer space. A black hole is a region of Space-Time exhibiting such strong gravitational effects that nothing—not even particles and electromagnetic radiation such as light—can escape from inside it. Albert Einstein first predicted black holes in 1916 with his general theory of relativity . The term "black hole" was coined in 1967 by American astronomer John Wheeler , and the first one was discovered in 1971.  T ypes O f B lack H oles :        S tellar Black Holes S uper-massive Black Holes  I ntermediate Black Holes.    - Stellar Black Holes :  (Small but deadly) When a star burns through the last of its fuel, it may collapse, or fall into itself. For smaller stars, up to about three times the sun's mass, the new core will be a neutron star or a white dwarf. But when a larger star ...