Mystery of Galaxy

White hole Welcome to my blog “ Mystery of Galaxy” .  An artistic representation of a white hole. Source: NASA’s Goddard Space Flight Center/Discover   From the mathematics of Einstein’s general relativity comes an object so peculiar, a white hole. The white holes twin of a black hole, was first thought of in the 18th century by the geologist John Mitchell . In those days, black holes were not considered to be real, Einstein even assumed they didn’t exist. Yet Einstein’s theory of general relativity predicts and allows a concept named a white hole. More specifically it’s the mathematics of general relativity that say that white holes are possible. If you take the mathematics of a black hole and literally reverse it, you get a white hole. Or even, a white hole is a time-reversed blackhole. So, a black hole will not allow any matter to escape, once the matter is cross the event horizon, an imaginary boundary around a blackhole where no matter can escape after passing it. And so take t

Possible sign of life on Venus Welcome to my blog "Mystery of Galaxy" . Today's topic is" Is phosphine the sign of life on Venus?" Venus Source: Pablo Carlos Budassi / CC BY-SA   Finding signs of life on other planets beyond the Earth would be away of answering the biggest questions that we've had as a species so far. Where do we come from? Are we alone? Deep within the acid clouds above Venus, astronomers have detected something new, a gas that could be a sign of life. The gas is phosphine, a toxic molecule with an odor of garlic and dead fish. Astronomers discovered the compound in a cloud layer where temperatures are fairly close to those on earth's surface. Phosphine is exciting because of where it comes from. On earth, it's either manufactured by humans, or it's a natural byproduct of life. It just doesn't show up anywhere else, and there's no human manufacturing on Venus. Phosphine is not sure fireproof there are alien microbes on t

Searching and exploration missions to discover Pluto Welcome to my blog" Mystery of Galaxy" . Over four billion kilometers away from us, lies a distant, frigid world. On its barren surface, nitrogen falls as snow. Vast plains of frozen methane lie in the shadow of ice water mountains. From the surface of this hostile place, the sun appears nothing more than a star, a single pinprick of light among millions. The name mankind gave this silent world Pluto . Discovered in the midst of the Great Depression by a former Illinois farm boy, Pluto was once the most mysterious planet in our solar system. For decades known only from blurry photographs, it finally became the focus of a NASA mission in 2006… only for the International Astronomer’s Union to controversially strip it of its planet status that same year. A dwarf planet that behaves like a comet, a lifeless chunk of rock that might be home to oceans, Pluto still grips our imaginations. Pluto Today we explore the history of th

 Welcome to my blog “ Mystery of Galaxy” . Today our topic is about the existence of white hole. Let’s get started. Are white hole real?  An artistic representation of a white hole. Source: NASA’s Goddard Space Flight Center/Discover Just like the elusive loch nests monster, a white hole is an interesting idea that has not yet been proved to be real, but there's no good reason why it couldn't be real. You see, white holes are highly speculative tales, told by astronomers to potentially explain what's on the other side of a black hole. So what exactly is a white hole, and do they really exist? Let's find out... A white hole is the exact opposite of a blackhole .   A black hole sucks in matter and no matter can escape it. Black hole Source: Event Horizon Telescope / CC BY Whereas a white hole spews out matter but matter cannot enter it, kind of like a teenager’s bedroom. Most physicists say that white holes are extremely unlikely to be real and their existence i

 Welcome to my blog " Mystery of Galaxy ". Today our topic is  Why Mars Died, and Earth Lived? The Mars rover, Curiosity , is the latest in a long line of missions to Mars… Landers sent to scoop its soil and study its rocks, arbiters sent to map its valleys and ridges. They are all asking the same question. The Mars rover,  Curiosity Did liquid water once flow on this dry and dusty world? Did it support life in any form? And are there remnants left to find? The science that comes out of these missions may help answer a much larger, more philosophical question… Is our planet Earth the norm, in a galaxy run through with life-bearing planets? Or is Earth a rare gem, with a unique make-up and history that allowed it to give rise to living things? On Mars, Curiosity has spotted pebbles and other rocks commonly associated with flowing water. It found them down stream on what appears to be an ancient river fan, where water flowed down into Gale Crater. This shows that at some

A black hole less than 8,000 light-years away is slowly devouring its companion star. As it does so, it fires jets of plasma at nearly half the speed of light. The system is V404 Cygni , and astronomers have discovered that the black hole is wobbling. But if that weren’t strange enough, it’s actually dragging the fabric of the Universe around with it. Welcome back to my blog " Mystery of Galaxy ", and in this article we’re going to take a look at one of the strangest findings from a nearby black hole.  An artist’s impression of a black hole, similar to V404 Cygni, devouring material from an orbiting companion star.  image credit: ESO / L. Calçada. V404 Cygni lies about 7800 light-years away in the constellation Cygnus the Swan . It’s a binary system that’s home to a black hole about 9 times the Sun’s mass. The black hole was likely formed in a core-collapse supernova. If a star's core reaches 2.8 solar masses or greater, there’s no force in the Universe that will preve

               The Event Horizon Telescope On April 10th 2019, the very first image of a black hole will be released to the public and we're gonna preview it and understand this remarkable scientific achievement. Welcome back to my blog "Mystery of Galaxy" . Chances are by now you've already seen the very first image of a black hole.  First image of M87 blackhole Source: Event Horizon Telescope / CC BY Anyway let's take a quick look at how black holes have been depicted traditionally. When we think about black hole images, they're usually surrounded by a disk of gas and dust that is circling at very high speed. Some of its falling into the black hole, some of it being accelerated out in bipolar jets .  Jets of black holes Source: ESA/Hubble / CC BY Now these illustrations are very useful for understanding the geometry of the black hole and its accretion disk . However, if we were to look upon black hole and its accretion disk with our own eyes, we would see