Exploration Talks

what will happen when our sun dies ? If you worry about when the sun will die, never fear: that moment is billions of years away. The sun gives energy to life on Earth, and without this star, we wouldn't be here. But even stars have limited lifetimes, and someday our sun will die. You don't need to worry about this solar death anytime soon, though. Like all stars, a churning fusion engine fuels the sun, and it still has a lot of fuel left — about 5 billion years' worth.    Stars like our sun form when a huge cloud of gas (mostly hydrogen and helium) grows so large that it collapses under its own weight. The pressure is so high in the center of that collapsing mass of gas that the heat reaches unimaginable levels, with temperatures so hot that hydrogen atoms lose their electrons. Those naked hydrogen atoms then fuse together into helium atoms, and that reaction releases enough energy to counter the intense pressure of gravity collapsing the cloud of gas. The b

 The closest star to Earth is a triple-star system called Alpha Centauri.   The two main stars are Alpha Centauri A and Alpha Centauri B, which form a binary pair. They are about 4.35 light-years from Earth, according to NASA (opens in new tab). The third star is called Proxima Centauri or Alpha Centauri C, and it is about 4.25 light-years from Earth, making it the closest star other than the sun. According to NASA, Alpha Centauri A and B are on average about 23 astronomical units (AU) from each other — a little more than the distance between the sun and Uranus. (An astronomical unit is the average distance between Earth and the sun, which equals 92,955,807 miles or 149,597,870 kilometers.) The closest the two stars ever come to each other is 11 astronomical units, according to NASA (opens in new tab)   To the naked eye, the Alpha Centauri A and B shine as one, making them the third brightest "star" in our night sky. The two separate stars can be seen through a small tel

  The Crab Nebula   The Crab Nebula, the result of a supernova noted by Earth-bound chroniclers in 1054 A.D., is filled with mysterious filaments that are are not only tremendously complex, but appear to have less mass than expelled in the original supernova and a higher speed than expected from a free explosion. The Crab Nebula spans about 10 light-years. In the nebula's very center lies a pulsar: a neutron star as massive as the Sun but with only the size of a small town. The Crab Pulsar rotates about 30 times each second.   The nebula was discovered by English astronomer John Bevis in 1731, and it corresponds with a bright supernova recorded by Chinese astronomers in 1054. The nebula was the first astronomical object identified that corresponds with a historical supernova explosion  

 First  Image of Universe  Deepest Infrared   by NASA’s James Webb    | James webb space telescope first image    Every Single Dot of this Image is Galaxy from Newest to Oldest   Washington: The clearest image to date of the early universe, going back 13 billion years, has been released - and it doesn't disappoint. The stunning shot, released in a White House briefing by President Joe Biden, is overflowing with thousands of galaxies and features some of the faintest objects observed, colorized in blue, orange and white tones. The image, captured by the James Webb Space Telescope, the most powerful to be placed in orbit, covers a patch of the sky "roughly the size of a grain of sand held at arm's length by someone standing on earth", NASA administrator Bill Nelson said.  NASA’s James Webb Space Telescope has produced the deepest and sharpest infrared image of the distant universe to date. Known as Webb’s First Deep Field, this image of galaxy cluster SMACS 072

 Indian startups Ecosystem India has become the 3rd largest in the world in terms of no. of Unicorns 1 out of 10 is the Indian unicorns on 6 may the ministry of commerce and industry  talk about Indian 100 unicorn startup  neobank (OPEN) startup became 100th Unicorns in India with latest funding $50 million from IIFL  the 100 unicorns with total valuation of $332.7 billion    Unicorns   is refereed to that startup which attain a 1 billion or more valuation  In years 2021 the total 44 no of startups was attaind unicorn club throughout the year the total valuation is  $93 billion and in just 5 month of 2022 there are 16 unicorns born with valuation $18.9 billion  Ministry of india data shows that since the lounch of thr startup india initiative on 16th jaunary 2016 more than 69000   startups has been recognize in the country till 2nd may 2022 In FY 16-17 only one unicone was being added every year over the last 5 years 17,18,19,20,21  this no has been increasing exponentially with 66% ye