HEIV

Light pollution , also known as  photopollution   or  luminous pollution , is excessive, misdirected, or obtrusive artificial Light Pollution is the adding-of/added light itself, in analogy to added sound, carbon dioxide, etc. Adverse consequences are multiple; some of them may not be known yet. Light pollution competes with starlight in the night sky for urban residents, interferes with astronomical observatories, and, like any other form of pollution, disrupts ecosystems and has adverse health effects. Light pollution can be divided into two main types: Unpleasant light that intrudes on an otherwise natural or low-light setting Excessive light (generally indoors) that leads to discomfort and adverse health effects Light pollution is a side effect of industrial civilization. Its sources include building exterior and interior lighting, advertising, commercial properties, offices, factories, streetlights,...

Hi guys, This  is the first 'question and answer' round of this blog!!!. All you have to do is to ask whatever ( related to astronomy, off course! !!!) and I will try my best to give the best answers. Hope you all enjoy it and we'll together unveile the mysterious of the Cosmos!!!! By:- Aviral Srivastava Find me on Instagram as : avirals_22 Email me @ aviralsrivastava12@gmail.com 

A guide for amateur astronomers,who love watching the night sky. P.S. : This is for the month of November 2015, Hope you like it . shared by : Aviral Srivastava Find me on Instagram : avirals_22 email me at : aviralsrivastava12@gmail.com

Mars,the fourth planet from the sun and our earth's neighbour has always drawn our attention towards it. We think that life existed on Mars ,but till recently we knew not much about it, we only had theories.  Earlier this week NASA's mission to Mars : MAVEN gave some shocking news on the subject.The Mrs Atmosphere and Volatile Evolution(MAVEN) mission was launched on November 18,2013. The MAVEN spacecraft arrived at Mars on September 21,2014, to explore the planet's upper atmosphere, ionosphere and interactions with the sun  and solar winds. The rover has identified the process that might have played an important part in change in the Martiam climate and might have wiped out life( if it ever existed there). Following is a short clipping on what  information has been gathered from the Red Planet. written by: Aviral Srivastava Find me on instagram : avirals_22  email me at : aviralsrivastava12@gmail.com

NASA CAPTURES THE SUN IN 4K-UHD  NASA's Solar Dynamic Observatory ,which is orbiting the Earth from a distance of 2,500 km has captures stunning photos of the Sun in 4K resolution. NASA has published this video of the sun boasting in its high definition display.It's good having high resolution pictures of the Sun as it will enable us to get more information about our nearest star. Writen by: Aviral Srivastava find me on:- Instagram: avirals_22 email me at: aviralsrivastava12@gmail.com

The Milky Way Three orbiting X-ray space telescopes have detected an increased in the  rate of X-ray flares from the usually quiet giant black hole at the center of our Milky Way Galaxy after new long-term monitoring. Researchers are trying to learn whether this is normal behavior that was unnoticed due to limited monitoring or these flares are triggered by the recent close passage of a mysterious dusty object. By combining information from long monitoring campaigns by NASA’s Chandra X-ray Observatory and ESA’s XMM-Newton , with observations by the Swift satellite, astronomers were able to carefully trace the activity of the Milky Way’s supermassive black hole over the last 15 years. The supermassive black hole — Sagittarius A* (Sgr A*) — weighs in at slightly more than 4 million times the mass of the Sun. X-rays are produced by hot gas flowing toward the black hole. The new study reveals that Sagittarius A* produces one bright X-ray flare about every 10 days....

A close encounter with the biggest planet of our solar system i.e. Jupiter,may have led to ejection of the fifth gas giant. A gas giant The existence of a fifth giant planet at the time of the  Solar System’s formation of  Solar System – in addition to Jupiter, Saturn, Uranus and Neptune – was. But if it did exist, how did it get pushed out? For years, astronomers have suspected the ouster was either  Jupiter or Saturn . “Our evidence points to Jupiter,” said team member Ryan Cloutier, of the University of Toronto. But, earlier studies which proposed that gas giants could possibly eject one another did not consider the effect such violent encounters would have on minor bodies, such as the known moons of the giant planets, and their orbits. So the team of astronomers tuned their attention on moons and orbits,making computer animations based on modern day trajectories of Callisto and Galileo ,  the regular moons orbiting around Jupiter and Saturn res...